Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.2506a&link_type=abstract
American Astronomical Society, AAS Meeting #212, #25.06; Bulletin of the American Astronomical Society, Vol. 40, p.223
Astronomy and Astrophysics
Astronomy
Scientific paper
The Cosmic Origins Spectrograph (COS) will be installed on the Hubble Space Telescope (HST) during the next servicing mission. It will be, by a large factor, the most sensitive spectrograph ever flown onboard HST. COS will be able to achieve S/N > 30 per resolution element for routine science observations, with a goal of reaching S/N = 100 with additional observation and calibration steps. COS has two photon-counting detectors, a 1024 x 1024 MAMA for the near-UV (NUV) region and a windowless, cross delay line device (XDL detector) with two 16384 x 1024 pixel segments, similar to that used for FUSE, for the far-UV (FUV). Standard processing of the spectra includes flat-fielding the data. During the ground calibration effort for COS, deep images were obtained using an external deuterium lamp to create flat-field reference files. For the NUV detector, these will be compared with flat-field images to be taken during the initial on-orbit verification period using one of two onboard deuterium calibration lamps. For the FUV detector, the ground flats did not improve the S/N and an external UV calibration star will be observed at various locations on the detector to determine the fixed pattern noise. We will present results from the ground testing and plans for the on-orbit flat field calibration.
Ake Thomas B. III
COS IDT Team
COS/STIS STScI Team
McPhate Jason
Penton Steve
No associations
LandOfFree
Flat Fields for the Cosmic Origins Spectrograph does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Flat Fields for the Cosmic Origins Spectrograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flat Fields for the Cosmic Origins Spectrograph will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1395810