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| Paper: |
Constructing and Reducing Sets of HST Observations Using Accurate Spacecraft Pointing Information |
| Volume: |
145, Astronomical Data Analysis Software and Systems VII |
| Page: |
45 |
| Authors: |
Micol, A.; Pirenne, B.; Bristow, P. |
| Abstract: |
The implementation of ``On-The-Fly'' Re-Calibration at the ST-ECF and CADC goes some way towards alleviating the problem of obtaining good and timely calibration of HST exposures. However, the data access paradigm is still to consider each exposure individually, re-calibrate them and offer the results to users, who subsequently process the data further. We describe here techniques to automatically group together HST WFPC2 exposures for cosmic ray removal, co-addition and combination into mosaics with minimal resolution loss. We show that the execution of these tasks has been made essentially automatic. The ST-ECF archive now offers the possibility to select {\it ``associations''} of datasets and the automatically combined final products. A further spin off of this project is that more reliable pointing information for all exposures is provided. |
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