Astronomy Asked by AstroShannon on December 4, 2021
While my question is similar to this one, the suggestions offered there won’t work for my specific situation. For over a month I’ve been trying to find software capable of this but it’s been an unsuccessful search. I don’t think the software exists; however, I haven’t asked this group yet. I sure hope I’m wrong.
I’ve tried SAOimageDS9, AstroImajeJ, PixInsight, Mira, and MaxIm DL 6 Pro but they don’t recompute the WCS entries. My goal is to create a procedure to do aperture photometry on special data sets without using Python but first I need to determine if it’s possible. A crop is required before all else due to the size of the data.
When working with other data sets, cropping issue isn’t a problem. The images are registered, then the crop is performed (as well as any ‘rotate 180 deg’ or mirror left/right/top/bottom). It removes the WSC headers but plate solving the new, smaller, postage stamp image puts the corrected ones back in.
If anyone knows of software to crop fits images and return correct WCS headers, it would help tremendously.
Skycat also stores the WCS information when selecting an image region from a fits file. Not sure how exactly this can be done in non-interactive mode but many features can in fact be "batched". Give it a try. Best luck!
Answered by Matias G. on December 4, 2021
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