Search found 19 matches

by ML7087373
Thu Jan 22, 2015 6:27 pm
Forum: Image Processing Troubleshooting
Topic: Vignette like gradient
Replies: 4
Views: 5034

Re: Vignette like gradient

I think I accidentally found the source of my nemesis, the dreaded Blue Fringe. It seems to be light pollution. I still don't understand how it manifests as just a fringe of gradient, but knowing the source may help me, or others with similar gradients, figure it out. My reasoning for believing the ...
by ML7087373
Mon Jan 19, 2015 12:36 am
Forum: Image Processing Troubleshooting
Topic: Vignette like gradient
Replies: 4
Views: 5034

Re: Vignette like gradient

Does the issue persist if you eliminate the flats and/or bias frames from the stack? I detect a presence of some faint, large scale horizontal and vertical bands, which could indicate problems with either... I don't know. I'll reprocess tomorrow as suggested and get back to you. Can't do it tonight...
by ML7087373
Sun Jan 18, 2015 12:31 am
Forum: Image Processing Troubleshooting
Topic: Vignette like gradient
Replies: 4
Views: 5034

Vignette like gradient

I have an ongoing problem with some sort of vignetting. I've been battling this issue for ~30 imaging sessions. This image is an example. M78 2014_12_22 2015_01_12 Comp Neb V2 ST Vig JPG.jpg I will post 2 other sample images in this post. All three are captured with my Canon 60DA attached to the Fie...
by ML7087373
Fri Oct 24, 2014 6:37 pm
Forum: Tutorials & Guides
Topic: Creating a multi exposure length HDR composite
Replies: 17
Views: 31141

Re: Creating a multi exposure length HDR composite

I have a question, isn't it better to stack all those exposures in a single fit? DSS already does that using groups Regards I don't think so. The whole idea of using different exposure lengths is to take advantage of the advantages of them. A shorter exposure will expose detail in brighter areas th...
by ML7087373
Fri Oct 24, 2014 3:07 am
Forum: Tutorials & Guides
Topic: Creating a multi exposure length HDR composite
Replies: 17
Views: 31141

Re: Creating a multi exposure length HDR composite

Using your stacking solution (for example DSS), try stacking one data set using the other as a reference. This way you'll have perfectly aligned images and the same dimensions. Does this help? I don't know. I'll have to look into that. My first impression is that, as I dither my lights, the stackin...
by ML7087373
Thu Oct 23, 2014 6:10 pm
Forum: Tutorials & Guides
Topic: Creating a multi exposure length HDR composite
Replies: 17
Views: 31141

Re: Creating a multi exposure length HDR composite

I was so excited to see this tutorial and after looking at it I find it will not work for my situation as far as I can see. I tried this with 2 stacks of M31 data taken on different nights, different years actually, and the layers won't combine because the images are of different dimensions. I thoug...
by ML7087373
Fri Jun 06, 2014 11:13 pm
Forum: Tutorials & Guides
Topic: The duck Hunt
Replies: 1
Views: 4769

The duck Hunt

So now you’re up to speed here is my response. I didn’t use binning. I have been concerned about losing detail by doing so. I think my concern was correct. The thing I was incorrect about is that the detail I lose is oversamlping noise, so it’s a good thing. I understand the concept of oversampling...
by ML7087373
Wed Feb 05, 2014 8:47 pm
Forum: Feature Requests
Topic: Dual monitor support
Replies: 0
Views: 3185

Dual monitor support

I've started using a second monitor when processing images on my laptop. It would be handy for me to be able to display the image I'm processing on the big screen monitor while I process. At this point I just use the whole "big screen" to process, but having just the image there, even if it's also o...
by ML7087373
Mon Feb 03, 2014 3:27 pm
Forum: Image Processing Troubleshooting
Topic: Process Help for M81, M82
Replies: 8
Views: 9376

Re: Process Help for M81, M82

Hope this helps![/quote] Thanks Ivo, that absolutely helps! Now that's what I call a tutorial. Your processing gives me a boost in confidence. With more data and more time working with StarTools I'll be able to produce images that, if I'm not careful, will end up on department store telescope boxes....
by ML7087373
Mon Feb 03, 2014 12:41 am
Forum: Image Processing Troubleshooting
Topic: Process Help for M81, M82
Replies: 8
Views: 9376

Re: Process Help for M81, M82

Wow nice result! Thanks for processing the data. I knew there was more detail in M81. I see you Binned, as recommended in the tutorials. You also used Decon which I have yet to get figured out. Looks like I need to watch more tutorials. I'll process using your settings so I can see the changes happe...