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Stacking program, astrometric (plate) solver, fits file viewer
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I just installed the latest release of ASTAP for both my M1 Mac and Win 11 (ARM 64).
My camera is a Canon EOS 6D modified/cooled.
I love the really fast time to complete a plate solve, but no matter what image I work with, none of them will plate solve.
Here are links to two different CR2 images that I'm having a problem with.
https://ufile.io/h3yauvh5 NGC1499
https://ufile.io/bc8cribh M86
BTW:
The LibRaw conversion shows this for the debayer pattern: FILT-PAT= 'RGGBRGGBRGGBRGGB' / Filter pattern
And the DCraw conversion shows this for the debayer patter: BAYERPAT= '????'
RGGB is correct. I get the same good-looking image with either one, but no plate solve.
The debayered image in Win 11 looks much brighter and more colorful than in M1 Mac. Both computers using the same monitor. This is probably a setting in the computer, but I trust the setting in the Mac to be more realistic. See attached photo.
Last edit: John Carter Sr 2022-03-02
When I export the image from both Win 11 and the Mac as a TIFF, the images appear to be identical. So the only issue with the Mac side is that the image looks greener in ASTAP - even with all settings in ASTAP on both computers exactly the same. That's really not a problem for me.
What is a problem for me is that what is shown in the FITS header is quite different between the two apps.
Hello John,
Solving, there are two things important if you solve cr2 files. One is your image height in degrees. For your setup it should be 2.37 degrees. If you don't know you could select "auto" and let ASTAP try all heights.
Secondly the position where to start unless you do a 180 degrees search. Easiest way is to double click on Ra or Dec and enter the object name. Or else give just the hours and decination manually.
See attached screenshot.
About debayer./demosaic. Are you using the same debayer pattern? Note some debayer pattern in ASTAP like AstroC or AstroSimple or SuperPixels are better for tiny stars then for
pictures of houses/humans with large surfaces. For astronomy you don't want colour artifacts
Debayer pattern are set in tab "stack method"
Cheers, Han
Last edit: han.k 2022-03-02
Thanks. I didn't have the degrees set right after installing the new app version.
It now plate solves.
The debayer settings are identical on both computers. Since an export to a TIFF produces the same image, I'm not concerned about what it looks like in ASTAP. But it would be really nice if the FITS headers had the same information on both computers.