Search found 33 matches

by Moonstruck
Fri Sep 08, 2023 9:27 am
Forum: Image Processing Troubleshooting
Topic: Andromeda galaxy processing issues
Replies: 3
Views: 14039

Re: Andromeda galaxy processing issues

Thanks Mike. I think I'm going to call this one a total loss and capture Andromeda again as soon as the high humidity lets up. Sounds like fixing this just isn't worth the time. And I'll take your advice on using shorter subs. Next time I'll try using either 30-sec or a minute (or both, and compare ...
by Moonstruck
Thu Sep 07, 2023 10:14 pm
Forum: Image Processing Troubleshooting
Topic: Andromeda galaxy processing issues
Replies: 3
Views: 14039

Andromeda galaxy processing issues

Hi all, I imaged the Andromeda Galaxy last night under extremely humid conditions (91-93% relative humidity), and temperatures in the 70's. I got some strange results- the galaxy appears way overexposed in the center. I have an asi 294 color camera and a Skywatcher esprit 100 ED scope. The flat fram...
by Moonstruck
Fri Jul 21, 2023 11:40 am
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18474

Re: Help needed - fireworks galaxy processing

Mike, Thanks for the additional analysis! Here is a link to one light frame which shows the eggy-looking stars, which look the worst in the upper left. In the lower right of the screen they look round (or a lot better at least). After doing some reading on the subject, this looks like it could be co...
by Moonstruck
Thu Jul 20, 2023 12:42 pm
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18474

Re: Help needed - fireworks galaxy processing

MIke, et al: Well I tried capturing the fireworks galaxy again last night and the noise is gone (for some unknown reason) but I now have egg-shaped stars. I was taking 4-min exposures for around 5 hrs, guided with PHD2. Not sure if it is a PHD2 issue, a mount issue or what. This would have been a de...
by Moonstruck
Tue Jul 11, 2023 7:08 pm
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18474

Re: Help needed - fireworks galaxy processing

Thanks for the replies, and Hi Mike! Mike- you are correct that there was already a dark and flat subtraction going on and that was my fault- I did it by accident. I was livestacking earlier and had the automatic dark and flat subtraction turned on for that, and forgot to turn it off when I did my l...
by Moonstruck
Tue Jul 11, 2023 3:47 pm
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18474

Re: Help needed - fireworks galaxy processing

Thanks Dietmar. Here is a link to one light file: https://drive.google.com/file/d/1JQK2cr8YEB6V5gVKI4egqlg4Xrx0L8vl/view?usp=sharing I was autoguiding using PhD2 but was not dithering. I was told that I should use "dark flats" instead of bias files when processing, so that is why i didn't use bias f...
by Moonstruck
Tue Jul 11, 2023 2:20 pm
Forum: Image Processing Troubleshooting
Topic: Help needed - fireworks galaxy processing
Replies: 9
Views: 18474

Help needed - fireworks galaxy processing

Hi, I am having some real difficulty processing the fireworks galaxy (NGC6946) and am hoping someone can help. I took about 4 hrs of 2-min subs last night under what appeared to be ideal conditions, but when I went to process it in startools there were 2 issues: 1) when the raw stack included lights...
by Moonstruck
Thu Apr 06, 2023 9:06 pm
Forum: Image Processing Troubleshooting
Topic: Question on file format - large JPG files needed
Replies: 5
Views: 15242

Re: Question on file format - large JPG files needed

Hey Mike! Yes, I got lucky and a magazine agreed to publish my article on astrophotography. I have had a few astronomy/astrophotography articles in local newspapers but this is the first time for a magazine... I'm very excited! My pictures have been getting a little better lately, and I have been us...
by Moonstruck
Wed Apr 05, 2023 9:50 pm
Forum: Image Processing Troubleshooting
Topic: Question on file format - large JPG files needed
Replies: 5
Views: 15242

Question on file format - large JPG files needed

I will be sending a few astro pictures to a local magazine for publication, and they require my photos be in JPG format, and a minimum of 300dpi and from 3-5MB. They do not accept tiff, or any other type of files. Is there a way that I can save the files in startools as JPGs this size, at the requir...
by Moonstruck
Fri Feb 03, 2023 12:07 pm
Forum: Image Processing Troubleshooting
Topic: Assistance needed processing comet C/2022 E3 (ZTF)
Replies: 5
Views: 15044

Re: Assistance needed processing comet C/2022 E3 (ZTF)

Thanks wonky5- I appreciate you processing it. It really helps to see what others do with the same data. I also ended up with a purple or pink hue in several of my attempts. I am going to give this another shot with several different exposure times.