Thanks Peter! This is exactly what I was looking for, I had the same problem when processing my Witch Head nebula this week. I ended up needing to set Sigma high to 1.75. When set to 1.9, I could still easily see some satellite trails (although it was much better than before). Unfortunately the lower the sigma high value is, the less detail is preserved in the image, or at least that's what I noticed.
Several videos on multiple different channels, as well as many photos published on astrophoto sites, mention the exposure time. What is the qualifying f/stop assumed when it isn't mentioned, f/10? f/6? Sixty hours at f/10 may not seem to be excessive, but if shot at f/2, that is a ridiculously long time without much benefit beyond a few hours. My point is it isn't much value mentioning the exposure time of an astrophoto without mentioning at what f/stop, unless there is some "everybody knows" number I am unaware of.
@@davevick1775 i was actually unclear on the difference between the two so i looked it up, sounds like the large scale pixel rejection is an algorithm designed for large satellite trails, a ‘smarter’ way of rejection than just simple outlier like sigma clipping, and it lets you use a higher clipping threshold as a result meaning better SNR! so unfortunately no, the large scale pixel rejection is not in Siril, but at least sigma clipping is
basically every stacker has it, deepskystacker has kappa sigma clipping. You might get a very very slight snr boost in pix but it's basically negligible, (you can basically think of it as losing 1 or 2 subs worth of data)
Seti Astro recently published his new 'Cosmic Clarity Satellite Trail Removal Tool'. th-cam.com/video/v4QgwMZeShU/w-d-xo.htmlsi=fl0Oi0hqHEv812Ft update: th-cam.com/video/tpouRGy1Nnw/w-d-xo.htmlsi=yq8r0vmcTG80UsYd
Thanks Peter! This is exactly what I was looking for, I had the same problem when processing my Witch Head nebula this week. I ended up needing to set Sigma high to 1.75. When set to 1.9, I could still easily see some satellite trails (although it was much better than before). Unfortunately the lower the sigma high value is, the less detail is preserved in the image, or at least that's what I noticed.
I always learn something from your videos, Im on the fence with this program…cost, learning curve.
Valuable information. Thank you! 🙂
Satellites Replacing The Stars!
Right !!
22,300 miles above the earth stationary geo sats?
Several videos on multiple different channels, as well as many photos published on astrophoto sites, mention the exposure time. What is the qualifying f/stop assumed when it isn't mentioned, f/10? f/6? Sixty hours at f/10 may not seem to be excessive, but if shot at f/2, that is a ridiculously long time without much benefit beyond a few hours.
My point is it isn't much value mentioning the exposure time of an astrophoto without mentioning at what f/stop, unless there is some "everybody knows" number I am unaware of.
I had a feeling this was going to involve Pixinsite.
Seti Astro has a good suite of processing tools which includes satellite removal. It's free. No need for PixInsight.
simmer down, you can do windsorized sigma clipped stacking in Siril as well
Ah, but can you do large-scale pixel rejection too?
@@davevick1775 i was actually unclear on the difference between the two so i looked it up, sounds like the large scale pixel rejection is an algorithm designed for large satellite trails, a ‘smarter’ way of rejection than just simple outlier like sigma clipping, and it lets you use a higher clipping threshold as a result meaning better SNR! so unfortunately no, the large scale pixel rejection is not in Siril, but at least sigma clipping is
basically every stacker has it, deepskystacker has kappa sigma clipping. You might get a very very slight snr boost in pix but it's basically negligible, (you can basically think of it as losing 1 or 2 subs worth of data)
Seti Astro recently published his new 'Cosmic Clarity Satellite Trail Removal Tool'.
th-cam.com/video/v4QgwMZeShU/w-d-xo.htmlsi=fl0Oi0hqHEv812Ft
update: th-cam.com/video/tpouRGy1Nnw/w-d-xo.htmlsi=yq8r0vmcTG80UsYd