WFPC2 CTE Characterization
Astrophysics
2007-05-23 v1
Abstract
The limiting factor of the accuracy of WFPC2 photometry is the CTE loss, which has increased to the level of 50% or more for faint stars at the top of the chips. I describe recent work on characterizing this effect, and provide improved equations for CTE correction. I also examine issues affecting background measurement, which if not done correctly can introduce artificial nonlinearities into photometry.
Cite
@article{arxiv.astro-ph/0212117,
title = {WFPC2 CTE Characterization},
author = {Andrew E. Dolphin},
journal= {arXiv preprint arXiv:astro-ph/0212117},
year = {2007}
}
Comments
2002 HST Calibration Workshop proceedings. 10 pages. Postscript copy with all figures from the author's web site, http://www.noao.edu/staff/dolphin/wfpc2_calib/