Search found 263 matches

by almcl
Thu Feb 08, 2024 12:20 pm
Forum: Image Processing Troubleshooting
Topic: Controlling stars
Replies: 5
Views: 969

Re: Controlling stars

OK, here we go. It centres on the technique originally described here: https://forum.startools.org/viewtopic.php?f=7&t=244 by Ivo for separating the stars from DSOs. This is also referenced in Guy's list of Special techniques Starting with the original stacked image, Optidev, Crop and then wipe. Aft...
by almcl
Wed Feb 07, 2024 5:45 pm
Forum: Image Processing Troubleshooting
Topic: Controlling stars
Replies: 5
Views: 969

Re: Controlling stars

Thanks for sharing your original data, Jeff. I have had a very quick play, using the technique I outlined in our PM exchange. I seem to have lost a lot of detail and the colour has come out differently, perhaps as a result of a rather too quick use of Wipe, but see what you think? Bode_sGalaxy blend...
by almcl
Wed Feb 07, 2024 12:40 pm
Forum: Image Processing Troubleshooting
Topic: Controlling stars
Replies: 5
Views: 969

Controlling stars

Starting this thread in response to a comment by Jeff in the Special Techniques thread. Jeff wondered if there is a simpler workflow to keep the stars under control while teasing out the nebulosity, that perhaps didn't involve Starnet++? I have had a go at the posted jpeg in that thread (1st image h...
by almcl
Sat Oct 28, 2023 9:25 pm
Forum: General Discussion
Topic: DSS set black point to zero now automatic
Replies: 35
Views: 64836

Re: DSS set black point to zero now automatic

... ? @almcl , do you think that there is any special relevance of this setting for processing in ST? Well, the advice in one of Guy's tutorials was to avoid the stacking software making any changes to the data and when the check box was available it was advised to leave it unchecked. I am not sure...
by almcl
Wed Oct 25, 2023 8:21 pm
Forum: General Discussion
Topic: DSS set black point to zero now automatic
Replies: 35
Views: 64836

Re: DSS set black point to zero now automatic

Hi Dietmar I must confess, I haven't used my DSLR for astro imaging for a while now, so haven't seen any problems as all my images come direct from the ASI 2600mc as .fits files. Interesting idea about making a StarTools fork of DSS which, as you say, is lightning fast now compared to ASTAP. (It han...
by almcl
Tue Oct 24, 2023 9:29 am
Forum: General Discussion
Topic: DSS set black point to zero now automatic
Replies: 35
Views: 64836

DSS set black point to zero now automatic

For those who use Deep Sky Stacker (DSS) the latest editions (5.1.4 and on) are automatically setting the black point to 0 and there is now no option to disable this. In previous versions (eg 4.2.6) a check box was available to prevent this happening, but this has now been removed. ( Discussion on t...
by almcl
Tue Jul 11, 2023 4:26 pm
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18466

Re: Help needed - fireworks galaxy processing

As Dietmar says, there are two angles of walking noise. You can see them in the screenshot below (from the Wipe module). Dithering should help with this in future. So too would preventing, or at least reducing, image drift. That depends on your imaging and guiding set up and may be harder to achieve...
by almcl
Fri Jun 30, 2023 9:11 pm
Forum: Bug Reports
Topic: mask brush mode
Replies: 2
Views: 12689

mask brush mode

Two slightly trivial ones (apologies): In the mask module (1.9.557 beta) the first two mask modes are now both 'Flood fill lighter pixels'. Believe the second one should be 'darker pixels'. Filter mode.jpg In the filter module the Filter mode still offers two 'Pass' where I think the second one ough...
by almcl
Thu Jun 29, 2023 6:51 am
Forum: General Discussion
Topic: StarTools 1.9 Beta
Replies: 67
Views: 693721

Re: StarTools 1.9 Beta

Here's the log file (masks removed to keep size down). I think the RoI in the final stretch is probably the most important bit, as most of the rest are just the defaults. File loaded [E:\Astronomy\someone elses files\M 8, 2023-06-13, 80x6min, (l-eNhance), ATR3CMOS26000KPA_stacked.fits]. Image size i...
by almcl
Mon Jun 26, 2023 9:20 pm
Forum: General Discussion
Topic: StarTools 1.9 Beta
Replies: 67
Views: 693721

Re: StarTools 1.9 Beta

Hi Stefan Thanks for sharing your (very nice!) data. I had a quick go at processing it in 1.9.557 beta and got the result below. Not sure if its the sort result you're after, but if it is, the SVD settings that seemed to help were Deringing fuzz 13% and Deringing focus 84%. I found lowering the fuzz...