Find Stars: ADU filter

Image processing, astrometry, photometry, etc.
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Craig
Posts: 16
Joined: 09 Apr 2020, 01:33

Find Stars: ADU filter

Post by Craig » 10 Apr 2020, 04:00

In using the Find Stars function I don't think the ADU filter is being used. If I set the ADU filter to 0 and run Find Stars, I then look at the found stars on the image and center on one that is faint. I then rerun Find Stars but with a larger value for ADU (the min value, left column). It makes no difference, the star is still selected. Using a very faint star on the image I can set the ADU filter to 2000000 and it still finds the star. I am assuming the ADU filter is compared to the sum of the pixels in the aperture and if the sum is less than the ADU value the star is rejected?

Craig

fabdev
Posts: 198
Joined: 03 Dec 2018, 21:43

Re: Find Stars: ADU filter

Post by fabdev » 10 Apr 2020, 13:51

Thanks, I can confirm that the filter has no effect at all. It will be corrected in SP4.
If you need the prerelease just write me by PM or email.
Fabio.

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