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Following the failure of the "backup" side 2 electronics on the Advanced Camera
for Surveys (ACS) on 27 January 2007, the Hubble Heritage Team was asked to
conduct some new high-quality multiwavelength WFPC2 observations (proposal
Although the WFPC2 has been in continuous service since being installed during Hubble
Servicing Mission 1 in 1993, it has only had limited use since the installation
of ACS during HST Servicing Mission 3B in 2002. The purpose of this was to
quickly illustrate the current WFPC2 data quality, and produce a
Heritage-quality color composite image. A secondary goal was to demonstrate the
best practices for WFPC2 pointing and drizzling, and provide a concrete A-to-Z
example to help guide ACS users currently converting their science programs to
WFPC2. Users may find these pages useful:
Quick Start Guide to WFPC2 Imaging for ACS Proposers
WFPC2 dither and mosaic Pointing Patterns
The Heritage Team demonstrates the improved resolution that is possible when WFPC2 observations are made with optimal sub-pixal dithering at http://heritage.stsci.edu/2007/09/supplemental.html.
Filenames follow the naming convention
- fffff - filter
- xxxx - orientation of the image and the contents.
- s06y -- y-up and contains all four chips
- s06n -- north-up and has data from chip 3 where the target was centered.
- ttt is the type: science (sci) or weight.
Click to see larger image with filter information.
Heritage Press Release