Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.6605b&link_type=abstract
American Astronomical Society Meeting 205, #66.05; Bulletin of the American Astronomical Society, Vol. 36, p.1455
Astronomy and Astrophysics
Astronomy
Scientific paper
Precision photometry at the 2% level is a critical driver for the NIR detector system specifications for SNAP. A complete understanding of the quantum efficiency as a function of wavelength, time and temperature is an important element for the calibration of the NIR detector system. We have begun to characterize short-wave NIR detectors for SNAP produced by Rockwell Science Center and by Raytheon Vision Systems. We present initial results on quantum efficiency for some prototype devices. Since SNAP's images will be under-sampled, intra-pixel variation can have a significant impact on photometry. Therefore we have implemented a precision NIR micron-size spot projection system that we have used to characterize the intra-pixel variation. Linearity and stability are additional factors which we are investigating that could have an important impact on precision photometry. We compare our results to the current SNAP NIR specifications and discuss our plans for developing a SNAP NIR science grade device.
Brown Michael G.
SNAP
No associations
LandOfFree
Optical Characterization of 1.7 micron NIR Detectors for SNAP 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 Optical Characterization of 1.7 micron NIR Detectors for SNAP, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical Characterization of 1.7 micron NIR Detectors for SNAP will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1640325