Search found 20 matches

by celeron787
Sun Feb 07, 2021 7:21 am
Forum: Image Processing Troubleshooting
Topic: Processing star clusters
Replies: 3
Views: 1777

Re: Processing star clusters

The Super Structure module is indeed the best tool for this job. I wasn't able to replicate the mottled background(?), but when using the Super Structure module, make sure to roughly match the field of view to the Airy Disk. From the docs; The 'Airy Disk Radius' parameter sets the radius of the Air...
by celeron787
Sat Feb 06, 2021 3:12 pm
Forum: Image Processing Troubleshooting
Topic: Processing star clusters
Replies: 3
Views: 1777

Processing star clusters

About 30mins integration time of M46 and M47 star clusters in a B8 zone. I know that I would benefit from longer intergration time but I would like to see if this set of data could be processed better. Any tips to push back the background noise a little bit more but retaining the same amount of star...
by celeron787
Fri Jan 22, 2021 12:21 am
Forum: General Discussion
Topic: Nikon D5300 colored concentric rings and StarTools
Replies: 4
Views: 2793

Nikon D5300 colored concentric rings and StarTools

Not sure if this is the right place to post this. I'm looking to get a modded Nikon D5300 for astrophotography to replace my existing unmodded Sony A6000. I came upon some discussion about colored concentric rings produced by the Nikon dslr. It seems to be removable by PixInsight, I was wondering wh...
by celeron787
Fri Aug 14, 2020 3:48 pm
Forum: Image Processing Troubleshooting
Topic: Improving this Rho Ophiuchi
Replies: 12
Views: 5878

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: 5878

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: 5878

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: 5878

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: 5878

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: 5878

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: 5878

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...