Ags Posted April 28 Share Posted April 28 (edited) I've been playing with Astrosharp this weekend, and I am quite pleased with the results so far. My test data is very noisy, I am hoping to gather some cleaner data tonight. However, the Astrosharp docs are nonexistent so I am not clear about the finer details of the tool. Which model is best to use - I am assuming Dual PSF for now. There is also an Astro clean model, but that seems to be a fairly potent noise reduction model? Has anyone out together a page describing what the different models do? Edited April 28 by Ags 1 Link to comment Share on other sites More sharing options...
Ags Posted April 28 Author Share Posted April 28 This was captured on a 99% Moon night, with strong city light pollution too. I only got an hour between clouds and I am using an uncooled camera so the image is dominated by noise. I am trying to get my stars smaller and get a bit more contrast and detail in the galaxy. My process is currently: 1. Graxpert removes the gradient and denoises the image. 2. Siril removes green noise, does a photometric color balance, and does a first stretch. 3. Astrosharp does the sharpening. 4. Siril does a star reduction. 5. Final tweaks to the histogram in Gimp. 1 Link to comment Share on other sites More sharing options...
Ags Posted April 29 Author Share Posted April 29 Got better (and more) data last night. 4 Link to comment Share on other sites More sharing options...
MarsG76 Posted April 29 Share Posted April 29 (edited) I'm quite happy with AstroSharp performance too... try Astro Denoise PY 0.5.2 for noise reduction.... Edited April 29 by MarsG76 Link to comment Share on other sites More sharing options...
Vash Posted April 29 Share Posted April 29 Thanks for the tip. I will give Astrosharp a try! What process in siril did you use for star reduction? Was it deconvolution or something else? Link to comment Share on other sites More sharing options...
Ags Posted April 29 Author Share Posted April 29 (edited) @Vash I am using a script, I got it from here: https://siril.org/tutorials/star-reduction/ I find it works best if the stars are not too bad in the first place. So be careful with initial stretches… Edited April 29 by Ags 1 Link to comment Share on other sites More sharing options...
Ags Posted April 29 Author Share Posted April 29 3 hours ago, MarsG76 said: try Astro Denoise PY 0.5.2 for noise reduction.... I think that is created by the developer of GraXpert, which now features a very powerful noise reduction ability too. Link to comment Share on other sites More sharing options...
Vash Posted April 29 Share Posted April 29 34 minutes ago, Ags said: @Vash I am using a script, I got it from here: https://siril.org/tutorials/star-reduction/ I find it works best if the stars are not too bad in the first place. So be careful with initial stretches… Thanks, I will give that a go! Link to comment Share on other sites More sharing options...
Ags Posted April 29 Author Share Posted April 29 5 hours ago, Vash said: Astrosharp I find Astrosharp provides a fairly good sharpening without introducing artifacts or making noise worse, as long as you don’t overdo it. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now