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

Telluric standard searches

based on coordinates, magnitude & spectral type

provides standards before & after science

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

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

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

Other Outstanding Tasks

Photometric zero-point monitoring

Implement IRAF detector linearity correction

Improve WCS

Others?