[BUG] Vista Image subtraction doesn't actually work
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robertdstein commented
Describe the bug
Firstly #864 needs to be fixed.
Then, there is a problem that vista images are too large, which can be fixed by tweaking the swarp config here:
Tweaking this allows image subtraction to take place. However, even after that, the subtraction itself fails spectacularly. in some cases.
This is leading to a bunch of spurious detections.
I propose to do three things:
- fix the swarp config
- fix the astroquery issue upstream via PR
- completely disable subtractions with VISTA until we are confident that it is doing the right thing most of the time.