1 / 13

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

floria
Download Presentation

NIRI Issues for 2007-2008

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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?

More Related