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Calibrating the WFPC2 astrometry for MDSThe Hubble Space Telescope (HST) Medium Deep Survey has optimized an automated procedure to associate and stack WFPC2 data. The coordinates listed in HST WFPC2 image and/or jitter file headers are often found to be insufficient to stack images for cosmic ray removal. We discuss results from software developed for the HST Medium Deep Survey (MDS) pipeline to evaluate these shifts by cross-correlation of the images. We will also discuss the distortion of the pre-cool-down WFPC2 field and attempts to derive absolute coordinates for MDS WFPC2 observations using the USNO-Al.0 half billion object catalog.
Document ID
19980202080
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Ratnatunga, Kavan U. (Carnegie-Mellon Univ. Pittsburgh, PA United States)
Ostrander, Eric J. (Carnegie-Mellon Univ. Pittsburgh, PA United States)
Griffiths, Richard E. (Carnegie-Mellon Univ. Pittsburgh, PA United States)
Date Acquired
August 18, 2013
Publication Date
January 1, 1997
Publication Information
Publication: The 1997 HST Calibration Workshop with a New Generation of Instruments
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAS5-26555
CONTRACT_GRANT: STScI-GO-2684
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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IDRelationTitle19980202026Collected WorksThe 1997 HST Calibration Workshop with a New Generation of Instruments
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