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Photometric calibration of the Swift ultraviolet/optical telescope
- Source :
- Monthly Notices of the Royal Astronomical Society. 383:627-645
- Publication Year :
- 2007
- Publisher :
- Oxford University Press (OUP), 2007.
-
Abstract
- We present the photometric calibration of the Swift UltraViolet/Optical Telescope (UVOT) which includes: optimum photometric and background apertures, effective area curves, colour transformations, conversion factors for count rates to flux, and the photometric zero points (which are accurate to better than 4 per cent) for each of the seven UVOT broadband filters. The calibration was performed with observations of standard stars and standard star fields that represent a wide range of spectral star types. The calibration results include the position dependent uniformity, and instrument response over the 1600-8000A operational range. Because the UVOT is a photon counting instrument, we also discuss the effect of coincidence loss on the calibration results. We provide practical guidelines for using the calibration in UVOT data analysis. The results presented here supersede previous calibration results.
- Subjects :
- Physics
Calibration (statistics)
Astrophysics::High Energy Astrophysical Phenomena
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Stellar classification
medicine.disease_cause
Photon counting
Coincidence
Optical telescope
Stars
Space and Planetary Science
medicine
Range (statistics)
Astrophysics::Solar and Stellar Astrophysics
Astrophysics::Galaxy Astrophysics
Ultraviolet
Subjects
Details
- ISSN :
- 00358711
- Volume :
- 383
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi...........4e07db6151666f8a1edd9439415b4fa8