Astrometric and Photometric Corrections for the 34th Row Error inHST's WFPC2 Camera
Open Access
- 1 September 1999
- journal article
- research article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 111 (763) , 1095-1098
- https://doi.org/10.1086/316432
Abstract
A small manufacturing defect, known but rarely noted, occurs at approximately every 34th row of each of the chips of WFPC2. This defect induces errors in photometry at the 0.01–0.02 mag level for about 6% of all stars, and periodic errors in astrometry for all stars, with an amplitude of 0.03 pixel. We derive simple corrections for these errors. The errors exist in all astrometry and photometry previously done with WFPC2, but they can be avoided in future work by applying the corrections that we give here.Keywords
This publication has 3 references indexed in Scilit:
- The Photometric Performance and Calibration of WFPC2Publications of the Astronomical Society of the Pacific, 1995
- High-precision measurement of pixel positions in a charge-coupled deviceApplied Optics, 1995
- DAOPHOT - A computer program for crowded-field stellar photometryPublications of the Astronomical Society of the Pacific, 1987