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NIRI Issues for 2007-2008

NIRI Issues for 2007-2008. NIR web page OT Library Detector pattern noise PWFS Flexure Other Outstanding Tasks. NIR Webpage. www.gemini.edu/sciops/instruments/nir Baseline calibrations for all NIR instruments Photometric standard search new UKIRT standard star catalog

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NIRI Issues for 2007-2008

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  1. NIRI Issues for 2007-2008 • NIR web page • OT Library • Detector pattern noise • PWFS Flexure • Other Outstanding Tasks

  2. NIR Webpage • www.gemini.edu/sciops/instruments/nir • Baseline calibrations for all NIR instruments • Photometric standard search • new UKIRT standard star catalog • Telluric standard searches • based on coordinates, magnitude & spectral type • provides standards before & after science

  3. NIRI OT Library • Complete examples of all observing modes • Photometric standard stars • template observations of all UKIRT standards • include guide star & broad-band exposure times • Imaging & Spectroscopic flats & arcs • new exposure times & GCAL filter configurations

  4. Detector Pattern Noise • 8-pixel periodic pattern • Primarily affects longer exposure frames • nvnoise.cl (in GNIRS IRAF package) • reduces noise, but cannot remove all of the pattern • Not charging for affected frames • Resources allocated to work on this problem

  5. PWFS Flexure • Flexure exists between PWFS & NIRI • ~0.2''/hour, depending on slit orientation • Imposes ~10 min / hour re-centering overhead • Hope to measure & model flexure

  6. Other Outstanding Tasks • Photometric zero-point monitoring • Implement IRAF detector linearity correction • Improve WCS • Others?

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