IRS-TR 11001: Temporal Responsivity Variations on the Red Peak-Up Sub-Array
Instrumentation and Methods for Astrophysics
2011-08-04 v1
Abstract
Over the course of the cryogenic mission of the Spitzer Space Telescope, the responsivity of the Red Peak-Up sub-array on the Infrared Spectograph (IRS) varied by ~2%, based on an analysis of five standard stars. The sensitivity dropped 1.7% after the first 14 IRS campaigns, then climbed back up 1.0% later in the mission. The uncertainty in these measurements is better than ~0.3%. The random variations in the Peak-Up photometry of the standard stars has a gaussian distribution of width ~2%, similar to the magnitude of the systematic temporal variations.
Keywords
Cite
@article{arxiv.1108.0907,
title = {IRS-TR 11001: Temporal Responsivity Variations on the Red Peak-Up Sub-Array},
author = {G. C. Sloan and D. A. Ludovici},
journal= {arXiv preprint arXiv:1108.0907},
year = {2011}
}
Comments
IRS Technical Report - posted at http://isc.astro.cornell.edu/IRS/TechnicalReports