Physics – Instrumentation and Detectors
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4008..695m&link_type=abstract
Proc. SPIE Vol. 4008, p. 695-702, Optical and IR Telescope Instrumentation and Detectors, Masanori Iye; Alan F. Moorwood; Eds.
Physics
Instrumentation and Detectors
3
Scientific paper
The OH airglow emission lines are the dominant source of background emission in the near-IR J and H bandpasses. In principle, these emission lines can be avoided by observing at sufficiently high spectral resolution, rejecting pixels contaminated by OH lines, and rebinning to the desired resolution. Two trade-offs to this approach are non- negligible detector noise per pixel and the added expense of instrumentation with higher resolution. In this contribution, we simulate various observed and desired resolutions as a function of detector noise and target brightness to develop a set of guidelines for the optimal resolution in a variety of observing programs. As a general rule, observing at a 2-pixel resolution of 2000-4000 provides optimal OH rejection for a wide range of detector noise and source signal.
DePoy Darren L.
Martini Paul
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