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HFR StellarSolver Extraction profiles.

Hy Murveit requested to merge murveit/kstars:hfrprofile into master

This adds StellarSolver star-extraction profiles for the hfr calculation on the captured subs that is triggered by the auto-compute HFR option and the 'mark-stars' view option.

I placed the UI element in the configure KStars menu, FITS section, below the auto-compute-hfr and quick-hfr checkboxes. https://photos.app.goo.gl/1YPi1wvaNRuskhzQA

This seems to work well. I provided 3 possible profiles. A default, similar to what was there before stellarsolver, a 2nd profile that will focus on bigger stars. Both those find a maximum of 100 stars in the detection area. The 3rd option opens this up to upto 1000 detections.

In all 3 cases, if the Quick HFR option is used, then only the middle 25% of the option is used. Otherwise, the entire image is the detection region.

I tested with a monochrome 20 mega-pixel taken in a pretty dense star area, and computation time on a RPi4 was 1-2s with the first two options. Without the quick option it was about 5+ seconds.

Edited by Hy Murveit

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