90 results on '"Glasse A"'
Search Results
2. Status update on the development of METIS, the mid-infrared ELT imager and spectrograph
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Brandl, B.R., Bettonvil, F.C.M., Van Boekel, R., Glauser, A., Quanz, S.P., Absil, O., Feldt, M., Garcia, P.J.V., Glasse, A., Guedel, M., Labadie, L., Meyer, M., Pantin, E., Wang, S.-Y., Van Winckel, H., Agócs, T., Amorim, A., Bertram, T., Burtscher, L.H., Delacroix, C., Laun, W., Lesman, D., Raskin, G., Salo, C., Scheithauer, S., Stuik, R., Todd, S., Haupt, C., Siebenmorgen, R., Evans, C.J., Bryant, J.J., and Motohara, K.
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- 2022
3. Characterization of the MIRIm double prism assembly at short wavelengths: implications for transit observations of exoplanets
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Patrice Bouchet, René Gastaud, Pierre-Olivier Lagage, Sarah Kendrew, Oriane Bombardi, Alain Coulais, Samuel Ronayette, Gregory C. Sloan, Vincent Moreau, Thierry Orduna, Emmanuel Grégoire, Achrène Dyrek, Jeroen Bouwman, Alistair C. Glasse, and Gillian S. Wright
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- 2022
4. Row and column artefacts in JWST MIRI’s Si:As blocked impurity band detectors
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Daniel Dicken, George H. Rieke, Michael E. Ressler, Jane E. Morrison, Macarena Garcia-Marin, Iaonnis Argyriou, Karl D. Gordon, Michael W. Regan, Christophe Cossou, Andras Gaspaar, Alistair Glasse, Pierre Guillard, Alvaro Labiano, and Gillian Wright
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- 2022
5. On-orbit JWST backgrounds from stray light and thermal emission
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Erin C. Smith, Jane R. Rigby, Michael W. McElwain, Charles W. Bowers, Randy A. Kimble, Christopher C. Stark, Paul A. Lightsey, Macarena Garcia Martin, Alistair C. H. Glasse, Ben Sunnquist, Brian Brooks, and Martha L. Boyer
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- 2022
6. MARVEL: the Mercator radial-velocity facility
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Raskin, Gert, primary, Pember, Jacob, additional, Schwab, Christian, additional, Vandenbussche, Bart, additional, Avila, Gerardo, additional, Stürmer, Julian, additional, Van Winckel, Hans, additional, Defrère, Denis, additional, Royer, Pierre, additional, Tkachenko, Andrew, additional, De Ridder, Joris, additional, Sana, Hugues, additional, Harman, Joel, additional, Humphreys, William, additional, Sharman, Robyn, additional, Waring, Chris, additional, and Glasse, Alistair, additional
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- 2022
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7. On-orbit JWST backgrounds from stray light and thermal emission
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Smith, Erin C., primary, Rigby, Jane R., additional, McElwain, Michael W., additional, Bowers, Charles W., additional, Kimble, Randy A., additional, Stark, Christopher C., additional, Lightsey, Paul A., additional, Garcia Martin, Macarena, additional, Glasse, Alistair C. H., additional, Sunnquist, Ben, additional, Brooks, Brian, additional, and Boyer, Martha L., additional
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- 2022
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8. Characterization of the MIRIm double prism assembly at short wavelengths: implications for transit observations of exoplanets
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Bouchet, Patrice, primary, Gastaud, René, additional, Lagage, Pierre-Olivier, additional, Kendrew, Sarah, additional, Bombardi, Oriane, additional, Coulais, Alain, additional, Ronayette, Samuel, additional, Sloan, Gregory C., additional, Moreau, Vincent, additional, Orduna, Thierry, additional, Grégoire, Emmanuel, additional, Dyrek, Achrène, additional, Bouwman, Jeroen, additional, Glasse, Alistair C., additional, and Wright, Gillian S., additional
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- 2022
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9. Row and column artefacts in JWST MIRI’s Si:As blocked impurity band detectors
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Dicken, Daniel, primary, Rieke, George H., additional, Ressler, Michael E., additional, Morrison, Jane E., additional, Garcia-Marin, Macarena, additional, Argyriou, Iaonnis, additional, Gordon, Karl D., additional, Regan, Michael W., additional, Cossou, Christophe, additional, Gaspaar, Andras, additional, Glasse, Alistair, additional, Guillard, Pierre, additional, Labiano, Alvaro, additional, and Wright, Gillian, additional
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- 2022
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10. MARVEL, a four-telescope array for high-precision radial-velocity monitoring
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Ignasi Ribas, S. Halverson, Hugues Sana, S. Prins, G. Avila, Bart Vandenbussche, J. Perez Padilla, J. Stuermer, L. Decin, Manuel Guedel, Denis Defrere, A. Glasse, Don Pollacco, Andrew Tkachenko, Lars A. Buchhave, David H. Atkinson, Giovanna Tinetti, Alexis Brandeker, Pierre Royer, Cyprien Lanthermann, Gert Raskin, Jacob Pember, J. De Ridder, H. Van Winckel, Christian Schwab, Johan Morren, Evans, CJ, Bryant, JJ, Motohara, K, Evans, Christopher J., Bryant, Julia J., and Motohara, Kentaro
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Physics ,Radial velocity ,Optical fiber ,Spectrograph ,media_common.quotation_subject ,Astrophysics::Instrumentation and Methods for Astrophysics ,FOS: Physical sciences ,Astronomy ,Exoplanet ,Space exploration ,law.invention ,Telescope ,Planet ,Observatory ,law ,Sky ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Astrophysics::Galaxy Astrophysics ,Telescopes ,media_common - Abstract
Since the first discovery of a planet outside of our Solar System in 1995, exoplanet research has shifted from detecting to characterizing worlds around other stars. The TESS (NASA, launched 2019) and PLATO mission (ESA, planned launch 2026) will find and constrain the size of thousands of exoplanets around bright stars all over the sky. Radial velocity measurements are needed to characterize the orbit and mass, and complete the picture of densities and composition of the exoplanet systems found. The Ariel mission (ESA, planned launch 2028) will characterize exoplanet atmospheres with infrared spectroscopy. Characterization of stellar activity using optical spectroscopy from the ground is key to retrieve the spectral footprint of the planetary atmosphere in Ariel's spectra. To enable the scientific harvest of the TESS, PLATO and Ariel space missions, we plan to install MARVEL as an extension of the existing Mercator Telescope at the Roque De Los Muchachos Observatory on La Palma (SPAIN). MARVEL consists of an array of four 80 cm telescopes linked through optical fibers to a single high-resolution echelle spectrograph, optimized for extreme-precision radial velocity measurements. It can observe the radial velocities of four different stars simultaneously or, alternatively, combine the flux from four telescopes pointing to a single faint target in one spectrum. MARVEL is constructed by a KU Leuven (Belgium) led collaboration, with contributions from the UK, Austria, Australia, Sweden, Denmark and Spain. In this paper, we present the MARVEL instrument with special focus on the optical design and expected performance of the spectrograph, and report on the status of the project., SPIE Astronomical Telescopes + Instrumentation 2020, Ground-based and Airborne Instrumentation for Astronomy VIII
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- 2020
11. Modelling the path length of aluminium seen by the detectors in the MIRI instrument on the JWST
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Piyal Samara-Ratna, George R. Rieke, Alistair Glasse, and David Lee
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Physics ,business.industry ,Astrophysics::High Energy Astrophysical Phenomena ,James Webb Space Telescope ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,chemistry.chemical_element ,Cosmic ray ,Ray tracing (physics) ,Optics ,Path length ,chemistry ,Aluminium ,Electromagnetic shielding ,Ultra-high-energy cosmic ray ,business - Abstract
The MIRI instrument on the James Webb Space Telescope is equipped with detectors which are susceptible to signal disruption by the charge deposited from impacting cosmic rays. In order to quantify the degree to which the structure of MIRI will shield the detectors, we have used an opto-mechanical ray tracing approach, whereby the solid bodies in a detailed 3D model of the instrument are substituted with an absorptive glassy material. By importing this modified model into a ray tracing program (Tracepro) and then launching many rays from the detector, we have been able to generate a map of aluminium path length as a function of direction. We find that there is a minimum thickness of 2 to 3 mm over a few patches which subtend no more than 1.5 % of the sky for the worst case, imager detector. We discuss the performance of the shielding provided by the MIRI structure, concluding that this minimum thickness of aluminium is sufficient to suppress the impact of low energy protons below the level of the unavoidable flux due to high energy cosmic rays.
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- 2020
12. Modelling the path length of aluminium seen by the detectors in the MIRI instrument on the JWST
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Glasse, Alistair C. H., primary, Lee, David, additional, Samara-Ratna, Piyal, additional, and Rieke, George R., additional
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- 2020
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13. Commissioning the scientific instruments of the James Webb Space Telescope
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Kimble, Randy A., primary, Friedman, Scott, additional, Alves de Oliveira, Catarina, additional, Birkmann, Stephan, additional, Boeker, Torsten, additional, Boyer, Martha, additional, Doyon, René, additional, Glasse, Alistair C. H., additional, Kendrew, Sarah, additional, Martel, André, additional, Nelan, Edmund, additional, Noriega-Crespo, Alberto, additional, Proffitt, Charles, additional, Smith, Corbett, additional, Stansberry, John, additional, Vila, Begoña, additional, and Willott, Christopher, additional
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- 2020
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14. Ge immersed grating manufacturing and optical verification for the METIS high-resolution spectrograph
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Agócs, Tibor, primary, Elswijk, Eddy, additional, Zaalberg, Daan, additional, Peterzon, Jan Rinze, additional, Tromp, Niels, additional, Lloro, Ivan, additional, Lynn, Jeffrey, additional, Navarro, Ramon, additional, Sukegawa, Takashi, additional, Okura, Yukinobu, additional, Todd, Stephen P., additional, Glasse, Alistair C. H., additional, Parr-Burman, Philip M., additional, Brandl, Bernhard R., additional, and Bettonvil, Felix C. M., additional
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- 2020
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15. MARVEL, a four-telescope array for high-precision radial-velocity monitoring
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Raskin, Gert, primary, Schwab, Christian, additional, Vandenbussche, Bart, additional, De Ridder, Joris, additional, Lanthermann, Cyprien, additional, Perez Padilla, Jesus, additional, Tkachenko, Andrew, additional, Sana, Hugues, additional, Royer, Pierre, additional, Prins, Saskia, additional, Decin, Leen, additional, Defrere, Denis, additional, Pember, Jacob, additional, Atkinson, David, additional, Glasse, Alistair, additional, Pollacco, Don, additional, Tinetti, Giovanna, additional, Güdel, Manuel, additional, Stuermer, Julian, additional, Ribas, Ignasi, additional, Brandeker, Alexis, additional, Buchhave, Lars, additional, Halverson, Samuel P., additional, Avila, Gerardo, additional, Morren, Johan, additional, and Van Winckel, Hans, additional
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- 2020
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16. Status of the mid-IR ELT imager and spectrograph (METIS)
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Manuel Güdel, Nicola Baccichet, Markus Feldt, Tibor Agócs, Ignas Snellen, Sascha P. Quanz, Lucas Labadie, Bernhard R. Brandl, Dirk Lesman, Christoph Haupt, Alistair Glasse, Hans Van Winckel, Paulo J. V. Garcia, Felix Bettonvil, Roy van Boekel, Matthew A. Kenworthy, Ewine F. van Dishoeck, Thomas Bertram, Werner Laun, Adrian M. Glauser, Leonard Burtscher, Olivier Absil, Eric Pantin, and Ralf Siebenmorgen
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Physics ,Solar System ,Active galactic nucleus ,Astronomy ,First light ,01 natural sciences ,7. Clean energy ,Exoplanet ,010309 optics ,0103 physical sciences ,Metis ,Field spectroscopy ,Adaptive optics ,010303 astronomy & astrophysics ,Spectrograph - Abstract
The Mid-Infrared ELT Imager and Spectrograph (METIS) is one of three first light instruments on the ELT. It will provide high-contrast imaging and medium resolution, slit-spectroscopy from 3 – 19um, as well as high resolution (R ~ 100,000) integral field spectroscopy from 2.9-5.3µm. All modes observe at the diffraction limit of the ELT, by means of adaptive optics, yielding angular resolutions of a few tens of milliarcseconds. The range of METIS science is broad, from Solar System objects to active galactic nuclei (AGN). We will present an update on the main science drivers for METIS: circum-stellar disks and exoplanets. The METIS project is now in full steam, approaching its preliminary design review (PDR) in 2018. In this paper we will present the current status of its optical, mechanical and thermal design as well as operational aspects. We will also discuss the challenges of building an instrument for the ELT, and the required technologies.
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- 2018
17. Observing recommendations for JWST MIRI users
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Sarah Kendrew, Alistair Glasse, Pamela Klaassen, George H. Rieke, John P. Pye, Macarena Garcia Marin, Tea Temim, Thomas P. Greene, David R. Law, Gillian S. Wright, Pierre Olivier Lagage, O. D. Fox, Dean C. Hines, Dan Dicken, Stacey Alberts, Michael W. Regan, Jane E. Morrison, and Michael E. Ressler
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Set (abstract data type) ,Telescope ,law ,Computer science ,Wavelength range ,James Webb Space Telescope ,Documentation system ,Plan (drawing) ,Data science ,law.invention - Abstract
The Mid-Infrared Instrument (MIRI), a result of the collaborative work of a consortium of European and US institutes, is the only Mid-IR science instrument on the James Webb Space Telescope (JWST). The combination of MIRIs sensitivity and angular resolution over the 5-28.5 µm wavelength range will enable investigations into many different science topics, ranging from the local to the high-redshift Universe. The MIRI team has defined and published a set of”Recommended Strategies” to help observers optimally plan and execute their science programs. Some of these recommendations are generic and applicable to any science case; others are tailored to specific observing modes. Here we summarize key generic recommendations for MIRI observers, with emphasis on detector usage. All this information is available to observers as part of the James Webb Telescope User’s Documentation System and will be updated as needed.
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- 2018
18. Time series observations with the mid-infrared instrument (MIRI) on JWST
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Daniel Dicken, Gillian S. Wright, Sarah Kendrew, George Rieke, Kevin B. Stevenson, Jeroen Bouwman, A. Glasse, Natalie M. Batalha, Macarena Garcia Marin, Jacob L. Bean, Laura Kreidberg, Nicolas Crouzet, Thomas P. Greene, Mike Ressler, and Pierre Olivier Lagage
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Ground testing ,010504 meteorology & atmospheric sciences ,Series (mathematics) ,Spectrometer ,Computer science ,James Webb Space Telescope ,Mid infrared ,Astronomy ,01 natural sciences ,Exoplanet ,Photometry (astronomy) ,0103 physical sciences ,Early release ,010303 astronomy & astrophysics ,0105 earth and related environmental sciences - Abstract
Time-variable phenomena such as transiting exoplanets will be a major science theme for the James Webb Space Telescope (JWST). For Guaranteed Time and Early Release Science Observations, over 500 hours of JWST time have been allocated to time series observations (TSOs) of transiting exoplanets. Several dedicated observing modes are available in the instrument suite, whose operations are specifically tailored to these challenging ob- servations. MIRI, the only JWST instrument covering the wavelength range longwards of 5 µm on JWST, will offer TSOs in two of its modes: the low resolution spectrometer, and the imager. In this paper we will describe these modes for MIRI, and discuss how they differ operationally from regular (non-TSO) observations. We will show performance estimates based on ground testing and modeling, discuss the most relevant detector effects for high precision (spectro-)photometry, and provide some guidelines for planning MIRI TSOs.
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- 2018
19. Status of the mid-IR ELT imager and spectrograph (METIS)
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Pantin, Eric, primary, Glasse, Alistair, primary, van Winckel, Hans, primary, Güdel, Manuel, primary, Bettonvil, Felix, primary, Quanz, Sascha P., primary, Glauser, Adrian M., primary, van Boekel, Roy, primary, Garcia, Paulo, primary, Labadie, Lucas, primary, Brandl, Bernhard R., primary, Feldt, Markus, primary, Absil, Olivier, primary, Agocs, Tibor, primary, Baccichet, Nicola, primary, Bertram, Thomas, primary, Burtscher, Leonard, primary, van Dishoeck, Ewine, primary, Haupt, Christoph, primary, Kenworthy, Matthew, primary, Laun, Werner, primary, Lesman, Dirk, primary, Snellen, Ignas, primary, and Siebenmorgen, Ralf, primary
- Published
- 2018
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20. Observing recommendations for JWST MIRI users
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Garcia-Marin, Macarena, primary, Wright, Gillian, primary, Rieke, George, primary, Glasse, Alistair, primary, Dicken, Daniel, primary, Morrison, Jane, primary, Ressler, Michael, primary, Alberts, Stacey, primary, Regan, Michael, primary, Hines, Dean, primary, Fox, Ori, primary, Law, David, primary, Kendrew, Sarah, primary, Greene, Tom, primary, Temim, Tea, primary, Lagage, Pierre-Olivier, primary, Klaassen, Pamela, primary, and Pye, John, primary
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- 2018
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21. Time series observations with the mid-infrared instrument (MIRI) on JWST
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Kendrew, Sarah, primary, Bouwman, Jeroen, primary, Dicken, Daniel, primary, Lagage, Pierre-Olivier, primary, Greene, Thomas, primary, Glasse, Alistair, primary, Wright, Gillian S., primary, Rieke, George, primary, Garcia Marin, Macarena, primary, Crouzet, Nicolas, primary, Kreidberg, Laura, primary, Batalha, Natalie M., primary, Bean, Jacob L., primary, Stevenson, Kevin B., primary, and Ressler, Mike, primary
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- 2018
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22. Optical testing and verification methods for the James Webb Space Telescope Integrated Science Instrument Module element
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Raymond G. Ohl, Brian J. Comber, David Wright, Derek Sabatke, Joseph F. Sullivan, Gerry Warner, David A. Kubalak, J. Scott Smith, Scott Rohrbach, Douglas M. Kelly, Scott Antonille, Randy A. Kimble, Jeffrey R. Kirk, Wayne B. Landsman, Joseph M. Howard, Charles W. Bowers, Alistair Glasse, Raymond H. Wright, Corbett Smith, David L. Aronstein, Michael Maszkiewicz, William L. Eichhorn, George F. Hartig, Don J. Lindler, Emmanuel Cofie, Renee Gracey, Thomas P. Zielinski, Nicholas R. Collins, Cherie L. Miskey, Andrew Bartoszyk, Eliot M. Malumuth, Julia Zhou, Marcia J. Rieke, Randal Telfer, Maurice te Plate, N. Rowlands, and M. Begona Vila
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Physics ,Scientific instrument ,business.industry ,James Webb Space Telescope ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Optical telescope ,law.invention ,010309 optics ,Telescope ,Software ,Observatory ,law ,0103 physical sciences ,Test plan ,0210 nano-technology ,business ,Adaptive optics ,Computer hardware ,Simulation - Abstract
NASA's James Webb Space Telescope (JWST) is a 6.6m diameter, segmented, deployable telescope for cryogenic IR space astronomy (~40K). The JWST Observatory includes the Optical Telescope Element (OTE) and the Integrated Science Instrument Module (ISIM) that contains four science instruments (SI) and the fine guider. The SIs are mounted to a composite metering structure. The SI and guider units were integrated to the ISIM structure and optically tested at the NASA Goddard Space Flight Center as a suite using the Optical Telescope Element SIMulator (OSIM). OSIM is a full field, cryogenic JWST telescope simulator. SI performance, including alignment and wave front error, were evaluated using OSIM. We describe test and analysis methods for optical performance verification of the ISIM Element, with an emphasis on the processes used to plan and execute the test. The complexity of ISIM and OSIM drove us to develop a software tool for test planning that allows for configuration control of observations, associated scripts, and management of hardware and software limits and constraints, as well as tools for rapid data evaluation, and flexible re-planning in response to the unexpected. As examples of our test and analysis approach, we discuss how factors such as the ground test thermal environment are compensated in alignment. We describe how these innovative methods for test planning and execution and post-test analysis were instrumental in the verification program for the ISIM element, with enough information to allow the reader to consider these innovations and lessons learned in this successful effort in their future testing for other programs.
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- 2016
23. Status of the mid-infrared E-ELT imager and spectrograph METIS
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Matthew A. Kenworthy, Olivier Boulade, Thomas Bertram, J. Meisner, Manuel Güdel, Bernhard R. Brandl, Markus Feldt, Rieks Jager, Felix Bettonvil, Norma Hurtado, Auke Veninga, Alistair Glasse, Adrian M. Glauser, Roy van Boekel, Remko Stuik, Gabby Aitink-Kroes, Sascha P. Quanz, Hans Martin Schmid, Eric Pantin, Michael Meyer, Tibor Agócs, Christoffel Waelkens, and Michael Mach
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Physics ,business.industry ,Detector ,First light ,Grating ,01 natural sciences ,Exoplanet ,010309 optics ,Optics ,Cardinal point ,0103 physical sciences ,Metis ,business ,Adaptive optics ,010303 astronomy & astrophysics ,Spectrograph ,Remote sensing - Abstract
METIS is one the first three instruments on the E-ELT. Apart from diffraction limited imaging, METIS will provide coronagraphy and medium resolution slit spectroscopy over the 3 – 19μm range, as well as high resolution (R ~ 100,000) integral field spectroscopy from 2.9 – 5.3μm, including a mode with extended instantaneous wavelength coverage. The unique combination of these observing capabilities, makes METIS the ideal instrument for the study of circumstellar disks and exoplanets, among many other science areas. In this paper we provide an update of the relevant science drivers, the METIS observing modes, the status of the simulator and the data analysis. We discuss the preliminary design of the optical system, which is driven by the need to calibrate observations at thermal IR wavelengths on a six-mirror ELT. We present the expected adaptive optics performance and the measures taken to enable high contrast imaging. We describe the opto-mechanical system, the location of METIS on the Nasmyth instrument platform, and conclude with an update on critical subsystem components, such as the immersed grating and the focal plane detectors. In summary, the work on METIS has taken off well and is on track for first light in 2025.
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- 2016
24. The mid-infrared instrument for the James Webb Space Telescope: performance and operation of the Low-Resolution Spectrometer
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Karl D. Gordon, Alistair Glasse, Sebastian Fischer, J. Bouwman, Christine Chen, Samuel Ronayette, Gillian S. Wright, Thomas P. Greene, Didier Dubreuil, Dean C. Hines, O. D. Fox, David W. Wright, Fred Lahuis, Pierre-Olivier Lagage, Jérôme Amiaux, Patrice Bouchet, Sarah Kendrew, Silvia Scheithauer, and Ruyman Azzollini
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Physics ,010504 meteorology & atmospheric sciences ,Spectrometer ,business.industry ,Low resolution ,James Webb Space Telescope ,Mid infrared ,01 natural sciences ,Exoplanet ,Stars ,Optics ,0103 physical sciences ,Spectroscopy ,business ,010303 astronomy & astrophysics ,Transit (satellite) ,0105 earth and related environmental sciences - Abstract
We describe here the performance and operational concept for the Low Resolution Spectrometer (LRS) of the mid-infrared instrument (MIRI) for the James Webb Space Telescope. The LRS will provide R∼100 slit and slitless spectroscopy from 5 to 12 micron, and its design is optimised for observations of compact sources, such as exoplanet host stars. We provide here an overview of the design of the LRS, and its performance as measured during extensive test campaigns, examining in particular the delivered image quality, dispersion, and resolving power, as well as spectrophotometric performance. The instrument also includes a slitless spectroscopy mode, which is optimally suited for transit spectroscopy of exoplanet atmospheres. We provide an overview of the operational procedures and the differences ahead of the JWST launch in 2018.
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- 2016
25. MIRI/JWST detector characterization
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S. N. Bright, Alistair Glasse, G. S. Wright, Michael E. Ressler, Dean C. Hines, George H. Rieke, Stacey Alberts, J. E. Morrison, D. Dicken, M. Garcia-Marin, O. D. Fox, Alberto Noriega-Crespo, and Patrice Bouchet
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010504 meteorology & atmospheric sciences ,Physics::Instrumentation and Detectors ,Computer science ,Pipeline (computing) ,James Webb Space Telescope ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Residual ,01 natural sciences ,Jet propulsion ,Characterization (materials science) ,Cardinal point ,0103 physical sciences ,Electronic engineering ,Electronics ,010303 astronomy & astrophysics ,Simulation ,0105 earth and related environmental sciences - Abstract
We report on tests of the Mid-Infrared Instrument (MIRI) focal plane electronics (FPE) and detectors conducted at the Jet Propulsion Laboratory (JPL). The goals of these tests are to: characterize the performance of readout modes; establish subarray operations; characterize changes to performance when switching between subarrays and/or readout modes; fine tune detector settings to mitigate residual artifacts; optimize anneal effectiveness; and characterize persistence. The tests are part of a continuing effort to support the MIRI pipeline development through better understanding of the detector behavior. An extensive analysis to determine the performance of the readout modes was performed. We report specifically on the comparison of the fast and slow readout modes and subarray tests.
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- 2016
26. Spectral slicing for METIS: an efficient alternative to cross-dispersion
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Stephen Todd, J. Strachan, A. Glasse, and Martyn Wells
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Physics ,Spectrometer ,Field (physics) ,business.industry ,Detector ,Field of view ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Slicing ,Computational science ,010309 optics ,Wavelength ,Optics ,0103 physical sciences ,Dispersion (optics) ,0210 nano-technology ,Spectroscopy ,business - Abstract
Image slicing integral field units were developed to provide spatially resolved spectroscopy over a two dimensional field of view. Spectral slicing applies similar design principles to provide an alternative to cross-dispersion. Key benefits include more efficient use of detector space and greater flexibility in selecting the wavelength ranges within each band. We will describe the design of a deployable spectral slicing mode as part of the METIS LM-band high resolution spectrometer.
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- 2016
27. METIS: the mid-infrared E-ELT imager and spectrograph
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Eva Schmalzl, Remko Stuik, Matthew A. Kenworthy, Christoffel Waelkens, Sander Paalvast, Alistair Glasse, S. Heikamp, Manuel Guedel, Frank Molster, Markus Feldt, Michael Meyer, Lars Venema, Bernhard R. Brandl, Sascha P. Quanz, Rainer Lenzen, and Eric Pantin
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Physics ,business.industry ,Exoplanet ,law.invention ,Telescope ,Optics ,law ,Metis ,Angular resolution ,Spectral resolution ,business ,Adaptive optics ,Spectrograph ,Long-slit spectroscopy - Abstract
METIS will be among the first generation of scientific instruments on the E-ELT. Focusing on highest angular resolution and high spectral resolution, METIS will provide diffraction limited imaging and coronagraphy from 3-14μm over an 20x20° field of view, as well as integral field spectroscopy at R ~ 100,000 from 2.9-5.3μm. In addition, METIS provides medium-resolution (R ~ 5000) long slit spectroscopy, and polarimetric measurements at N band. While the baseline concept has already been discussed at previous conferences, this paper focuses on the significant developments over the past two years in several areas: The science case has been updated to account for recent progress in the main science areas circum-stellar disks and the formation of planets, exoplanet detection and characterization, Solar system formation, massive stars and clusters, and star formation in external galaxies. We discuss the developments in the adaptive optics (AO) concept for METIS, the telescope interface, and the instrument modelling. Last but not least we provide an overview of our technology development programs, which ranges from coronagraphic masks, immersed gratings, and cryogenic beam chopper to novel approaches to mirror polishing, background calibration and cryo-cooling. These developments have further enhanced the design and technology readiness of METIS to reliably serve as an early discovery machine on the E-ELT.
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- 2014
28. Optical testing and verification methods for the James Webb Space Telescope Integrated Science Instrument Module element
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Antonille, Scott R., additional, Miskey, Cherie L., additional, Ohl, Raymond G., additional, Rohrbach, Scott O., additional, Aronstein, David L., additional, Bartoszyk, Andrew E., additional, Bowers, Charles W., additional, Cofie, Emmanuel, additional, Collins, Nicholas R., additional, Comber, Brian J., additional, Eichhorn, William L., additional, Glasse, Alistair C., additional, Gracey, Renee, additional, Hartig, George F., additional, Howard, Joseph M., additional, Kelly, Douglas M., additional, Kimble, Randy A., additional, Kirk, Jeffrey R., additional, Kubalak, David A., additional, Landsman, Wayne B., additional, Lindler, Don J., additional, Malumuth, Eliot M., additional, Maszkiewicz, Michael, additional, Rieke, Marcia J., additional, Rowlands, Neil, additional, Sabatke, Derek S., additional, Smith, Corbett T., additional, Smith, J. Scott, additional, Sullivan, Joseph F., additional, Telfer, Randal C., additional, Te Plate, Maurice, additional, Vila, M. Begoña, additional, Warner, Gerry D., additional, Wright, David, additional, Wright, Raymond H., additional, Zhou, Julia, additional, and Zielinski, Thomas P., additional
- Published
- 2016
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29. Status of the mid-infrared E-ELT imager and spectrograph METIS
- Author
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Brandl, Bernhard R., additional, Agócs, Tibor, additional, Aitink-Kroes, Gabby, additional, Bertram, Thomas, additional, Bettonvil, Felix, additional, van Boekel, Roy, additional, Boulade, Olivier, additional, Feldt, Markus, additional, Glasse, Alistair, additional, Glauser, Adrian, additional, Güdel, Manuel, additional, Hurtado, Norma, additional, Jager, Rieks, additional, Kenworthy, Matthew A., additional, Mach, Michael, additional, Meisner, Jeff, additional, Meyer, Michael, additional, Pantin, Eric, additional, Quanz, Sascha, additional, Schmid, Hans Martin, additional, Stuik, Remko, additional, Veninga, Auke, additional, and Waelkens, Christoffel, additional
- Published
- 2016
- Full Text
- View/download PDF
30. EELT-HIRES the high-resolution spectrograph for the E-ELT
- Author
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Marconi, A., additional, Di Marcantonio, P., additional, D'Odorico, V., additional, Cristiani, S., additional, Maiolino, R., additional, Oliva, E., additional, Origlia, L., additional, Riva, M., additional, Valenziano, L., additional, Zerbi, F. M., additional, Abreu, M., additional, Adibekyan, V., additional, Allende Prieto, C., additional, Amado, P. J., additional, Benz, W., additional, Boisse, I., additional, Bonfils, X., additional, Bouchy, F., additional, Buchhave, L., additional, Buscher, D., additional, Cabral, A., additional, Canto Martins, B. L., additional, Chiavassa, A., additional, Coelho, J., additional, Christensen, L. B., additional, Delgado-Mena, E., additional, de Medeiros, J. R., additional, Di Varano, I., additional, Figueira, P., additional, Fisher, M., additional, Fynbo, J. P. U., additional, Glasse, A. C. H., additional, Haehnelt, M., additional, Haniff, C., additional, Hansen, C. J., additional, Hatzes, A., additional, Huke, P., additional, Korn, A. J., additional, Leão, I. C., additional, Liske, J., additional, Lovis, C., additional, Maslowski, P., additional, Matute, I., additional, McCracken, R. A., additional, Martins, C. J. A. P., additional, Monteiro, M. J. P. F. G., additional, Morris, S., additional, Morris, T., additional, Nicklas, H., additional, Niedzielski, A., additional, Nunes, N. J., additional, Palle, E., additional, Parr-Burman, P. M., additional, Parro, V., additional, Parry, I., additional, Pepe, F., additional, Piskunov, N., additional, Queloz, D., additional, Quirrenbach, A., additional, Rebolo Lopez, R., additional, Reiners, A., additional, Reid, D. T., additional, Santos, N., additional, Seifert, W., additional, Sousa, S., additional, Stempels, H. C., additional, Strassmeier, K., additional, Sun, X., additional, Udry, S., additional, Vanzi, L., additional, Vestergaard, M., additional, Weber, M., additional, and Zackrisson, E., additional
- Published
- 2016
- Full Text
- View/download PDF
31. The mid-infrared instrument for the James Webb Space Telescope: performance and operation of the Low-Resolution Spectrometer
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Kendrew, Sarah, additional, Scheithauer, Silvia, additional, Bouchet, Patrice, additional, Amiaux, Jerome, additional, Azzollini, Ruymán, additional, Bouwman, Jeroen, additional, Chen, Christine, additional, Dubreuil, Didier, additional, Fischer, Sebastian, additional, Fox, Ori D., additional, Glasse, Alistair, additional, Gordon, Karl, additional, Greene, Tom, additional, Hines, Dean C., additional, Lagage, Pierre-Olivier, additional, Lahuis, Fred, additional, Ronayette, Samuel, additional, Wright, David, additional, and Wright, Gillian S., additional
- Published
- 2016
- Full Text
- View/download PDF
32. Cryo-vacuum testing of the JWST Integrated Science Instrument Module
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Kimble, Randy A., additional, Vila, M. Begoña, additional, Van Campen, Julie M., additional, Birkmann, Stephan M., additional, Comber, Brian J., additional, Fatig, Curtis C., additional, Glasse, Alistair C. H., additional, Glazer, Stuart D., additional, Kelly, Douglas M., additional, Mann, Steven D., additional, Martel, André R., additional, Novo-Gradac, Kevin J., additional, Ohl, Ray G., additional, Penanen, Konstantin I., additional, Rohrbach, Scott O., additional, Sullivan, Joseph F., additional, Zak, Dean, additional, and Zhou, Julia, additional
- Published
- 2016
- Full Text
- View/download PDF
33. MIRI/JWST detector characterization
- Author
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Bright, Stacey N., additional, Ressler, M. E., additional, Alberts, Stacey, additional, Noriega-Crespo, Alberto, additional, Morrison, Jane E., additional, García-Marín, Macarena, additional, Fox, Ori, additional, Rieke, G. H., additional, Glasse, Alistair C., additional, Wright, G. S., additional, Hines, Dean C., additional, Bouchet, P., additional, and Dicken, D., additional
- Published
- 2016
- Full Text
- View/download PDF
34. Spectral slicing for METIS: an efficient alternative to cross-dispersion
- Author
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Wells, M., additional, Todd, S. P., additional, Glasse, A. C. H., additional, and Strachan, J., additional
- Published
- 2016
- Full Text
- View/download PDF
35. The MIRI Medium Resolution Spectrometer calibration pipeline
- Author
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Labiano-Ortega, Alvaro, primary, Dicken, Daniel, primary, Vandenbussche, Bart, primary, Lahuis, Fred, primary, Muller, Michael, primary, Beard, Steven M., primary, Justtanont, Kay, primary, Azzollini, Ruyman, primary, Law, David R., primary, Gordon, Karl D., primary, Glasse, Alistair C. H., primary, Wright, Gillian S., primary, Rieke, George H., primary, Klaassen, Pamela, primary, Glauser, Adrian M., primary, Morrison, Jane, primary, Geers, Vincent, primary, Bailey, Jeb I., primary, and Garcia-Marin, Macarena, primary
- Published
- 2016
- Full Text
- View/download PDF
36. Management of the JWST MIRI pFM environmental and performance verification test campaign
- Author
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Paul Eccleston, Helen Walker, David W. Wright, Gillian S. Wright, Brian O'Sullivan, Bryan Shaughnessy, Alistair Glasse, John Thatcher, T. Grundy, Martyn Wells, J. Sykes, and Ö. H. Detre
- Subjects
Scientific instrument ,Planet ,Computer science ,Observatory ,James Webb Space Telescope ,Systems engineering ,Simulation - Abstract
The Mid-Infrared Instrument (MIRI) is one of four scientific instruments on the James Webb Space Telescope (JWST) observatory, scheduled for launch in 2018. It will provide unique capabilities to probe the distant or deeply dust-enshrouded regions of the Universe, investigating the history of star and planet formation from the earliest universe to the present day. To enable this the instrument optical module must be cooled below 7K, presenting specific challenges for the environmental testing and calibration activities. The assembly, integration and verification (AIV) activities for the proto-flight model (pFM) instrument ran from March 2010 to May 2012 at RAL where the instrument has been put through a full suite of environmental and performance tests with a non-conventional single cryo-test approach. In this paper we present an overview of the testing conducted on the MIRI pFM including ambient alignment testing, vibration testing, gravity release testing, cryogenic performance and calibration testing, functional testing at ambient and operational temperatures, thermal balance tests, and Electro-Magnetic Compatibility (EMC) testing. We discuss how tests were planned and managed to ensure that the whole AIV process remained on schedule and give an insight into the lessons learned from this process. We also show how the process of requirement verification for this complex system was managed and documented. We describe how the risks associated with a single long duration test at operating temperature were controlled so that the complete suite of environmental tests could be used to build up a full picture of instrument compliance.
- Published
- 2012
37. An end-to-end instrument model for the proposed E-ELT instrument METIS
- Author
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Rainer Lenzen, Joris Blommaert, Lars Venema, Bernhard R. Brandl, Eric Pantin, J. Meisner, Eva Schmalzl, Michael Meyer, Alistair Glasse, Frank Molster, and Sarah Kendrew
- Subjects
Cryostat ,business.industry ,Computer science ,Measure (physics) ,First light ,law.invention ,Telescope ,Wavelength ,Software ,law ,Metis ,Aerospace engineering ,business ,Spectrograph ,Simulation - Abstract
The optimal performance of an instrument relies critically on accurate performance estimates during its design phase. They need to be modeled to give the science and engineering teams a preview of the performance of the instrument, to guide the design process, to prove the capabilities of the instrument and to prepare science ready software tools before the instrument is operational. METIS, the Mid-infrared E-ELT Imager, is an instrument concept for the E-ELT that covers the thermal infrared wavelengths from 2.9-14μm (L, M and N band). It contains a diffraction limited imager and an integral field high resolution spectrograph. The instrument consists of two independent units, the imager and the spectrograph, and is entirely encased in a cryostat to maintain the stable low temperatures required for good performance at mid-infrared wavelengths. METIS was identified in the instrument roadmap as the third instrument for the E-ELT, after two first light instruments. Because in the mid-infrared the Earth's atmosphere and the telescope mirrors radiate and produce a very high thermal background, it is crucial to develop techniques and mechanisms to measure and reduce this background, to achieve the desired performance of an E-ELT. To demonstrate the capabilities of METIS, years before the actual instrument is built and can be tested, we are developing an end-to-end instrument model, which will simulate the full capacity of METIS. The structure of the model and first results of the performance evaluation are shown. © 2012 SPIE.
- Published
- 2012
38. METIS: the thermal infrared instrument for the E-ELT
- Author
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Michael Meyer, Eric Pantin, Eva Schmalzl, Manuel Guedel, Frank Molster, Stefan Hippler, Emeric Le Floc'h, Joris Blommaert, Remko Stuik, Klaus M. Pontoppidan, Ignas Snellen, Rainer Lenzen, Lars Venema, J. Meisner, Bernhard R. Brandl, Alistair Glasse, and Wolfgang Brandner
- Subjects
Physics ,business.industry ,Astrophysics::Instrumentation and Methods for Astrophysics ,Polarimetry ,Astronomy ,Optics ,Integral field spectrograph ,Metis ,Angular resolution ,Astrophysics::Earth and Planetary Astrophysics ,Spectral resolution ,business ,Extremely large telescope ,Spectrograph ,Long-slit spectroscopy - Abstract
The ‘Mid-infrared ELT Imager and Spectrograph’ (METIS) will be the third instrument on the European Extremely Large Telescope (E-ELT). METIS will provide diffraction limited imaging in the atmospheric L/M and N-band from 3 to 14 μm over an 18˝×18˝ field of view, as well as high contrast coronagraphy, medium-resolution (R ≤ 5000) long slit spectroscopy, and polarimetry. In addition, an integral field spectrograph will provide a spectral resolution of R ~ 100,000 at L/M band. Focusing on highest angular resolution and high spectral resolution, METIS will deliver unique science, in particular in the areas of exo-planets, proto-planetary-disks and high-redshift galaxies, which are illustrated in this paper. The reduction of the E-ELT aperture size had little impact on the METIS science case. With the recent positive developments in the area of detectors, the METIS instrument concept has reached a high level of technology readiness. For some key components (cryogenic chopping mirror, immersed grating, sorption cooler and cryogenic derotator) a development and test program has been launched successfully.
- Published
- 2012
39. Designing the METIS adaptive optics system
- Author
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Michael Meyer, Stefan Hippler, Remko Stuik, Joris Blommaert, Frank Molster, A. Stolte, Eric Pantin, Rainer Lenzen, A. Glasse, Lars Venema, and Bernhard R. Brandl
- Subjects
Wavelength ,Spectrometer ,Computer science ,Electronic engineering ,Metis ,Metre ,Sensitivity (control systems) ,Adaptive optics ,Spectroscopy ,Extremely large telescope ,Remote sensing - Abstract
METIS, the Mid-infrared E-ELT Imager and Spectrometer is foreseen to be the third instrument on the European Extremely Large Telescope (E-ELT) and the only instrument to provide high sensitivity mid-IR imaging and spectroscopy to the E-ELT. In order to reach the maximum resolution and sensitivity, an adaptive optics system is required. Since the operational wavelength of METIS is the longest of all E-ELT instruments and the field is relatively small, the complexity of the AO system is significantly reduced, both in required speed as well as order of the AO system. Adaptive Optics has been demonstrated to deliver consistently high performance for the current generation of 6-10 meter class telescopes at mid-infrared wavelengths, and similar performance is expected for METIS on the E-ELT. But in order to provide a reliable system on the E-ELT, several effects which have a minor impact on 6-8 meter class telescopes will need to be investigated for their impact on METIS AO. These effects include refractivity, atmospheric composition variations, but also the operation in a complex operational environment given by both METIS as well as the E-ELT. In this paper we describe the scientific requirements on the METIS AO system, the specific issues related to Adaptive Optics in the mid-IR and expected performance of the METIS AO system on the E-ELT.
- Published
- 2012
40. The METIS AO system: bringing extreme adaptive optics to the mid-IR
- Author
-
Stefan Hippler, Rainer Lenzen, A. Glasse, Joris Blommaert, Lars Venema, Eric Pantin, Sarah Kendrew, Laurent Jolissaint, Remko Stuik, and Bernhard R. Brandl
- Subjects
Physics ,Spectrometer ,business.industry ,Instrumentation ,Strehl ratio ,law.invention ,Telescope ,Interferometry ,Optics ,law ,Metis ,Adaptive optics ,Extremely large telescope ,business ,Remote sensing - Abstract
METIS (Mid-infrared E-ELT Imager and Spectrometer) is the mid-infrared instrument proposed for the European Extremely Large Telescope (E-ELT). METIS will be the first instrument in the mid-IR that will actually require an Adaptive Optics system in order to reach a performance close to the diffraction limit. Extending Adaptive Optics for the mid-IR from the current generation of telescopes to 30-42 meter telescopes is technically challenging, but appears at first sight significantly easier than at visible and near infrared wavelengths. Adaptive Optics has been demonstrated to deliver Strehl Ratios exceeding 95% on 6-8 meter class telescopes at 10 microns, but achieving this performance on E-ELTs under normal observation conditions, requires that several higher order effects are taken into account. The performance of a mid-IR AO system drops significantly if refractivity effects and atmospheric composition variations are not compensated. Reaching Strehl Ratios of over 90% in the L, M and N band will require special considerations and will impact the system design and control scheme of AO systems for mid-IR on ELTs. The METIS instrument has finalized its preliminary design phase and in this paper we present the results of our performance estimates of the METIS AO system. We have included the effects of refractivity and composition fluctuations on the performance of the AO system and we have investigated how these effects impact the science cases for mid-IR instrumentation on an ELT.
- Published
- 2010
41. The throughput and sensitivity of the JWST mid-infrared instrument
- Author
-
K Justannont, Jeroen Bouwman, Oe Detre, G. S. Wright, M. García-Marín, Silvia Scheithauer, Martyn Wells, Sebastian Fischer, A. Glasse, George H. Rieke, Michael E. Ressler, E. Bauwens, Theodoros Nakos, and A Labiano
- Subjects
Orbit ,Computer science ,James Webb Space Telescope ,Mid infrared ,Sensitivity (control systems) ,Orbital mechanics ,Throughput (business) ,Simulation ,Reliability engineering - Abstract
The Verification Model (VM) of MIRI has recently completed an extensive programme of cryogenic testing, with the Flight Model (FM) now being assembled and made ready to begin performance testing in the next few months. By combining those VM test results which relate to MIRI's scientific performance with measurements made on FM components and sub-assemblies, we have been able to refine and develop the existing model of the instrument's throughput and sensitivity. We present the main components of the model, its correlation with the existing test results and its predictions for MIRI's performance on orbit.
- Published
- 2010
42. Progress with the design and development of MIRI, the mid-IR instrument for JWST
- Author
-
E. F. van Dishoeck, P. Driggers, Michael E. Ressler, G. Goodson, A. Glasse, Jose Lorenzo-Alvarez, P. O. Lagage, Hans Ulrik Nørgaard-Nielsen, Tom Ray, Torsten Boeker, Kalyani G. Sukhatme, David W. Wright, Luis Colina, Manuel Guedel, G. Olofsson, Th. Henning, Margaret Meixner, G. S. Wright, Thomas P. Greene, Scott D. Friedman, John Thatcher, C. Waelkens, and George H. Rieke
- Subjects
Telescope ,Computer science ,business.industry ,law ,James Webb Space Telescope ,Calibration ,Aerospace engineering ,Instrument design ,business ,Remote sensing ,law.invention - Abstract
MIRI is one of four instruments to be built for the James Webb Space Telescope. It provides imaging, coronography and integral field spectroscopy over the 5-28.5um wavelength range. MIRI is the only instrument which is cooled to 7K by a dedicated cooler, much lower than the passively cooled 40K of the rest of JWST, and consists of both an Optical System and a Cooler System. This paper will describe the key features of the overall instrument design and then concentrate on the status of the MIRI Optical System development. The flight model design and manufacture is complete, and final assembly and test of the integrated instrument is now underway. Prior to integration, all of the major subassemblies have undergone individual environmental qualification and performance tests and end-end testing of a flight representative model has been carried out. The paper will provide an overview of results from this testing and describe the current status of the flight model build and the plan for performance verification and ground calibration.
- Published
- 2010
43. Wavelength calibration of the JWST-MIRI medium resolution spectrometer
- Author
-
Juan Rafael Martínez-Galarza, A. Hernan-Caballero, Alistair Glasse, Ruymán Azzollini, Bernhard R. Brandl, Adrian Glauser, Fred Lahuis, and Sarah Kendrew
- Subjects
Physics ,Spectrometer ,business.industry ,James Webb Space Telescope ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Spectral line ,law.invention ,Telescope ,Wavelength ,Optics ,law ,Calibration ,Spectral resolution ,Astrophysics - Instrumentation and Methods for Astrophysics ,business ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,Astrophysics::Galaxy Astrophysics - Abstract
We present the wavelength and spectral resolution characterisation of the Integral Field Unit (IFU) Medium Resolution Spectrometer for the Mid-InfraRed Instrument (MIRI), to fly onboard the James Webb Space Telescope in 2014. We use data collected using the Verification Model of the instrument and develop an empirical method to calibrate properties such as wavelength range and resolving power in a portion of the spectrometer's full spectral range (5-28 microns). We test our results against optical models to verify the system requirements and combine them with a study of the fringing pattern in the instrument's detector to provide a more accurate calibration. We show that MIRI's IFU spectrometer will be able to produce spectra with a resolving power above R=2800 in the wavelength range 6.46-7.70 microns, and that the unresolved spectral lines are well fitted by a Gaussian profile., Comment: 12 pages, submitted to SPIE Proceedings vol. 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
- Published
- 2010
44. Instrument concept and science case for the mid-IR E-ELT imager and spectrograph METIS
- Author
-
Thomas Henning, Rainer Lenzen, Paul van der Werf, Pierre-Olivier Lagage, Christoffel Waelkens, Ewine F. van Dishoeck, Joris Blommaert, Wolfgang Brandner, Maarten Baes, Alistair Glasse, Lars Venema, Toby J. T. Moore, Hermann Böhnhardt, Hans Ullrich Käufl, Sarah Kendrew, Ralf Siebenmorgen, Bernhard R. Brandl, Eric Pantin, and Frank Molster
- Subjects
Physics ,Telescope ,law ,James Webb Space Telescope ,Metis ,Astronomy ,Optical polarization ,Angular resolution ,Spectral resolution ,Spectrograph ,Long-slit spectroscopy ,law.invention - Abstract
METIS is the 'Mid-infrared ELT Imager and Spectrograph', the only planned thermal/mid-IR instrument for the E-ELT. METIS will provide diffraction limited imaging in the atmospheric L/M and N-band from 3 - 14 μm over an 18'' x 18'' field of view (FOV). The imager also includes high contrast coronagraphy and low-resolution (900 ≤ R ≤ 5000) long slit spectroscopy and polarimetry. In addition, an IFU fed, high resolution spectrograph at L/M band will provide a spectral resolution of R ∼ 100,000 over a 0.4'' x 1.5'' FOV. The adaptive optics (AO) system is relatively simple, and METIS can reach its full performance with the adaptive correction provided by the telescope - and occasionally even under seeing limited conditions. On a 42m ELT, METIS will provide state-of-the-art mid-IR performance from the ground. The science case for METIS is based on proto-planetary disks, characterization of exoplanets, formation of our Solar System, growth of supermassive black holes, and the dynamics of high-z galaxies. With the focus on highest angular resolution and highest spectral resolution, METIS is highly complementary to JWST and ALMA. This paper summarizes the science case for METIS, and describes the instrument concept, performance and operational aspects. © 2010 Copyright SPIE - The International Society for Optical Engineering.
- Published
- 2010
45. Simulation and image reconstruction of IFU-spectrometer data from JWST-MIRI
- Author
-
Alistair Glasse, Martyn Wells, Bruce D. Kelly, Gillian S. Wright, Fred Lahuis, Adrian M. Glauser, and Jane E. Morrison
- Subjects
Physics ,Spectrometer ,business.industry ,Distortion (optics) ,James Webb Space Telescope ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Iterative reconstruction ,law.invention ,Data cube ,Telescope ,Optics ,law ,business ,Image restoration ,Remote sensing - Abstract
The Mid Infrared Instrument of the James Webb Space Telescope is equipped with an integral field unit (IFU) spectrometer. The optical distortion in the image slicing and dispersive optics leads to non-uniform sampling and a catenation of the spatial and spectral information on the detector plane. To enable the translation of detector data to the three-dimensional data cube representing the two spatial and the spectral sky dimension, we have built two software tools: The first is miri cube, an image reconstruction programme which translates the detector data back into the sky cube. The second is an extended version of SpecSim, an IFU simulator which simulates the image slicing and dispersion based on optical models of the instrument. With these tools we are able to determine and implement the correct strategy for the end-to-end calibration of spectroscopy data during the on-ground cryogenic test campaign.
- Published
- 2010
46. First results from MIRI verification model testing
- Author
-
Karl D. Gordon, Alistair Glasse, A.G. Bedregal, Martin Hennemann, Juan Rafael Martínez-Galarza, Jane E. Morrison, Joris Blommaert, Thomas P. Greene, Alvaro Labiano, Bryan Shaughnessy, Jose Lorenzo Alvarez, Paul Eccleston, E. Bauwens, Tim Grundy, Bruno Martin, Jens Zuther, Ulrich Klaas, Adrian Glauser, Bart Pindor, Theodoros Nakos, Fred Lahuis, Sebastian Fischer, Marc Ferlet, Helmut Dannerbauer, Martyn Wells, Macarena Garcia-Marin, Tanya Lim, Brian O'Sullivan, Gillian S. Wright, Bart Vandenbussche, and Michael E. Ressler
- Subjects
Physics ,Scientific instrument ,Medium resolution ,Test facility ,Cold test ,Spectrometer ,Low resolution ,Model testing ,James Webb Space Telescope ,Remote sensing - Abstract
The Mid-Infrared Instrument (MIRI) is one of the three scientific instruments to fly on the James Webb Space Telescope (JWST), which is due for launch in 2013. MIRI contains two sub-instruments, an imager, which has low resolution spectroscopy and coronagraphic capabilities in addition to imaging, and a medium resolution IFU spectrometer. A verification model of MIRI was assembled in 2007 and a cold test campaign was conducted between November 2007 and February 2008. This model was the first scientifically representative model, allowing a first assessment to be made of the performance. This paper describes the test facility and testing done. It also reports on the first results from this test campaign.
- Published
- 2008
47. System engineering and management in a large and diverse multinational consortium
- Author
-
Paul Eccleston, Bryan Shaughnessy, Brian O'Sullivan, Gillian S. Wright, Alistair Glasse, Martyn Wells, Ian Renouf, David W. Wright, John Thatcher, J. Sykes, Ulrich Grözinger, and David J. Smith
- Subjects
System requirements ,Engineering ,Software ,business.industry ,Multinational corporation ,General partnership ,James Webb Space Telescope ,Systems engineering ,Space industry ,business ,Early phase ,Phase (combat) - Abstract
This paper elaborates the system engineering methods that are being successfully employed within the European Consortium (EC) to deliver the Optical System of the Mid Infa-Red Instrument (MIRI) to the James Webb Space Telescope (JWST). The EC is a Consortium of 21 institutes located in 10 European countries and, at instrument level, it works in a 50/50 partnership with JPL who are providing the instrument cooler, software and detector systems. The paper will describe how the system engineering approach has been based upon proven principles used in the space industry but applied in a tailored way that best accommodates the differences in international practices and standards with a primary aim of ensuring a cost-effective solution which supports all science requirements for the mission. The paper will recall how the system engineering has been managed from the definition of the system requirements in early phase B, through the successful Critical Design Review at the end of phase C and up to the test and flight build activities that are presently in progress. Communication and coordination approaches will also be discussed.
- Published
- 2008
48. Development approach and first infrared test results of JWST/Mid Infra Red Imager Optical Bench
- Author
-
A. Donati, Pierre Guillard, Jean-Yves Plesseria, P. Bouchet, F. Meigner, P. Mattei, S. Poupar, M. Bouzat, Tom Ray, Y. Lussignol, P. De Antoni, Jean-Michel Reess, G. Tauzin, Didier Dubreuil, P. Perrin, F. Gougnaud, G. Olofsson, Samuel Ronayette, Jérôme Amiaux, B. Hervieu, Emmanuel Mazy, P. O. Lagage, J. L. Auguères, David W. Wright, G. S. Wright, I. Le Mer, F. Alouadi, Christelle Cloue, V. Moreau, Ralph Hofferbert, Oliver Krause, Etienne Renotte, A. Abergel, D. Eppelle, Michael E. Ressler, Didier Leboeuf, D. Desforges, E. Pantin, Kay Justtanont, C. Cavarroc, A. Glasse, and Y. Longval
- Subjects
Test bench ,Payload ,Infrared ,Computer science ,James Webb Space Telescope ,Cryogenic temperature ,Remote sensing ,Space environment - Abstract
The present paper describes the different steps leading to the Flight Model integration of the Mid-Infra Red IMager Optical Bench MIRIM-OB which is part of the scientific payload of the JWST. In order to demonstrate a space instrument capability to survive the challenging space environment and deliver the expected scientific data, a specific development approach is applied in order to reduce the high level of risks. The global approach for MIRIM-OB, and the principal results associated to the two main models, the Structural Qualification Model for vibration and the Engineering and Test Model for optical performance measured in the infra red at cryogenic temperature will be described in this paper.
- Published
- 2008
49. METIS: the Mid-infrared E-ELT Imager and Spectrograph
- Author
-
Bernhard R. Brandl, Rainer Lenzen, Eric Pantin, Alistair Glasse, Joris Blommaert, Lars Venema, Frank Molster, Ralf Siebenmorgen, Hermann Boehnhardt, Ewine van Dishoeck, Paul van der Werf, Thomas Henning, Wolfgang Brandner, Pierre-Olivier Lagage, Toby J. T. Moore, Maarten Baes, Christoffel Waelkens, Chris Wright, Hans Ulrich Käufl, Sarah Kendrew, Remko Stuik, and Laurent Jolissaint
- Subjects
Astrophysics (astro-ph) ,FOS: Physical sciences ,Astrophysics - Abstract
METIS, the Mid-infrared ELT Imager and Spectrograph (formerly called MIDIR), is a proposed instrument for the European Extremely Large Telescope (E-ELT), currently undergoing a phase-A study. The study is carried out within the framework of the ESO-sponsored E-ELT instrumentation studies. METIS will be designed to cover the E-ELT science needs at wavelengths longward of 3um, where the thermal background requires different operating schemes. In this paper we discuss the main science drivers from which the instrument baseline has been derived. Specific emphasis has been given to observations that require very high spatial and spectral resolution, which can only be achieved with a ground-based ELT. We also discuss the challenging aspects of background suppression techniques, adaptive optics in the mid-IR, and telescope site considerations. The METIS instrument baseline includes imaging and spectroscopy at the atmospheric L, M, and N bands with a possible extension to Q band imaging. Both coronagraphy and polarimetry are also being considered. However, we note that the concept is still not yet fully consolidated. The METIS studies are being performed by an international consortium with institutes from the Netherlands, Germany, France, United Kingdom, and Belgium., Comment: 15 pages, to be published in Proc SPIE 7014: Ground-based & Airborne Instrumentation for Astronomy II
- Published
- 2008
50. The MIRI medium resolution spectrometer for the James Webb Space Telescope
- Author
-
Peter Hastings, Jan-Willem Pel, Martyn Wells, David Lee, Alistair Glasse, and Ad Oudenhuysen
- Subjects
Physics ,Wavelength ,Optics ,Spectrometer ,business.industry ,Infrared ,Image quality ,James Webb Space Telescope ,Field of view ,business ,Spectroscopy ,Astronomical spectroscopy ,Remote sensing - Abstract
The MIRI Medium Resolution Spectrometer (MIRI-MRS) will increase the sensitivity of astronomical spectroscopy at thermal infrared wavelengths (from 5 to 28 microns), by a factor of 1000 over the best that can be achieved by existing ground-based instruments. This leap in performance is further enhanced by the first use at these wavelengths of all reflective Integral Field Units (image slicers) to provide the spectrometer with a rectangular field of view with a shortest dimension of 3.5 arcseconds. We describe the optical design of the MRS and present predictions for its delivered image quality.
- Published
- 2006
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