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The faint intergalactic-medium red-shifted emission balloon: future UV observations with EMCCDs
- Source :
- SPIE Proceedings.
- Publication Year :
- 2016
- Publisher :
- SPIE, 2016.
-
Abstract
- We present the latest developments in our joint NASA/CNES suborbital project. This project is a balloon-borne UV multi-object spectrograph, which has been designed to detect faint emission from the circumgalactic medium (CGM) around low redshift galaxies. One major change from FIREBall-1 has been the use of a delta-doped Electron Multiplying CCD (EMCCD). EMCCDs can be used in photon-counting (PC) mode to achieve extremely low readout noise (¡ 1e-). Our testing initially focused on reducing clock-induced-charge (CIC) through wave shaping and well depth optimisation with the CCD Controller for Counting Photons (CCCP) from Nüvü. This optimisation also includes methods for reducing dark current, via cooling and substrate voltage adjustment. We present result of laboratory noise measurements including dark current. Furthermore, we will briefly present some initial results from our first set of on-sky observations using a delta-doped EMCCD on the 200 inch telescope at Palomar using the Palomar Cosmic Web Imager (PCWI).
- Subjects :
- Physics
Galactic astronomy
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Redshift
Galaxy
Photon counting
law.invention
010309 optics
Telescope
Optics
law
0103 physical sciences
business
010303 astronomy & astrophysics
Spectrograph
Astrophysics::Galaxy Astrophysics
Noise (radio)
Dark current
Subjects
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- SPIE Proceedings
- Accession number :
- edsair.doi.dedup.....2239a6b458b9e5147ddde5badc71348c