Rafa Barberá replied to the topic 'Announcing StellarSolver 2.0' in the forum. 2 years ago

Hi Rob,

I've been playing with some images and Stellarsolve test program and there is a thing that I can't understand. I've used the attached image. As you can see red/blue channels are complete different (red focused, blue out of focus), but when I use SEP w/HFR or External SExtractor w/HFR I get the same value for the HFR for each star on both channels. I expected very different results when I select red or blue channel and this is not the case. What I'm doing wrong? Because if Stellarsolve can't see any difference on HFR, the focuser algorithm will be unable to use those different channels to improve the focus point.

File Attachment:

File Name: M_51_Light_RGB_300_secs_2022-05-07T21-10-33_006.fits.zip
File Size: 12,806 KB


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