Search found 17 matches

by celeron787
Fri Aug 14, 2020 3:48 pm
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Ok. Looks like DSS might encode some special fields to indicate a file is a Master Flat. However, maybe you can "stack" the modified master flat as if it is a stack of just one flat frame, so that DSS makes a master flat out of that? Hmm DSS still isnt reading any of the edited file. Same error "th...
by celeron787
Thu Aug 13, 2020 10:37 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Ok. Looks like DSS might encode some special fields to indicate a file is a Master Flat. However, maybe you can "stack" the modified master flat as if it is a stack of just one flat frame, so that DSS makes a master flat out of that? Hmm DSS still isnt reading any of the edited file. Same error "th...
by celeron787
Wed Aug 12, 2020 10:46 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Sorry, quick question. For applying the Gaussian Blur, I import in the masterflat -> Select Linear -> Click track, no noise reduction -> Layers -> Gaussian filter 10px. Is that correct? Yes, that should work. How do I stack using the masterflat in DSS? DSS isnt reading the edited masterflat properl...
by celeron787
Tue Aug 11, 2020 10:42 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Thanks ivo! I use Aperture Priority mode on my camera for my flat exposures. My flat was about 1/3 from the left in the histogram, that's usually what people recommend. But I'll try halfway the next time. The masterflat is what DSS churned out. It's always very dark in all my flat frame stacks. Is ...
by celeron787
Tue Aug 11, 2020 3:22 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Thank you for uploading all that. I can see banding in the non-flat-calibrated dataset, indicating it is likely of low bit-depth. It may be because of a combination of the very short exposure times and median stacking? It trips up Wipe pretty severely, as it sees the bands as detail. Your master fl...
by celeron787
Mon Aug 10, 2020 5:56 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Re: Improving this Rho Ophiuchi

Hi, Would you have any idea as to what caused the gradient? As you say, it is really quite extreme. I don't think I've ever seen a real celestial gradient that strong at this sort of FOV... :think: Can you confirm there was an extremely bright light source towards that area of the sky? Was the moon...
by celeron787
Sun Aug 09, 2020 3:21 am
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 1002

Improving this Rho Ophiuchi

Hi again, requesting help improving on this image of rho ophiuchi. I'm getting some harsh gradient towards the lower right corner. Default gradient wipe doesn't give me a uniform background unless I push it all the way up to 96%. There's significant walking noise in this image as I did not do any di...
by celeron787
Sun Jul 26, 2020 1:04 am
Forum: Image Processing Troubleshooting
Topic: Processing star clusters with galactic core
Replies: 10
Views: 1247

Re: Processing star clusters with galactic core

Thanks Ivo for the detailed log. Learnt some stuff especially on the Decon!
May I know when to leave the color module as default selection and when to use a star mask sample? Both yield quite different colors. Is it a preference thing?
by celeron787
Fri Jul 24, 2020 8:23 am
Forum: Image Processing Troubleshooting
Topic: Processing star clusters with galactic core
Replies: 10
Views: 1247

Re: Processing star clusters with galactic core

Ah, so I kinda over-processed it lol. I did some highlights and color adjustment, pushed the yellows and orange in Lightroom as my stars were mostly purplish. Oh I also used photoshop for star reduction, the shrink stars module gave me a very blotchy and mottled result. Would you mind giving the dat...
by celeron787
Thu Jul 23, 2020 12:37 am
Forum: Image Processing Troubleshooting
Topic: Processing star clusters with galactic core
Replies: 10
Views: 1247

Re: Processing star clusters with galactic core

Thanks Ivo.
I managed to re-stack it in DSS with the recommended settings.

FTS file here is anyone would like to give it a go: https://www.dropbox.com/s/gdb9df127mugr ... 4.fts?dl=0

Here's my take at it with some additional adjustments in Lightroom.
Capture.JPG
Capture.JPG (495.36 KiB) Viewed 1015 times