SWarp: Resampling and Co-adding FITS Images Together
Abstract
SWarp resamples and co-adds together FITS images using any arbitrary astrometric projection defined in the WCS standard. It operates on pre-reduced images and their weight-maps. Based on the astrometric and photometric calibrations derived at an earlier phase of the pipeline, SWarp re-maps ("warps") the pixels to a perfect projection system, and co-adds them in an optimum way, according to their relative weights. SWarp's astrometric engine is based on a customized version of Calabretta's WCSLib 2.6 and supports all of the projections defined in the 2000 version of the WCS proposal.
- Publication:
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Astrophysics Source Code Library
- Pub Date:
- October 2010
- Bibcode:
- 2010ascl.soft10068B
- Keywords:
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- Software