Search found 8 matches

by Stargazer_Ken
Wed Jul 01, 2015 5:38 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

Ha! Hadn't noticed this went to a second page! This is an 8 inch F4.5 dob on a Celestron CGEM mount. Mediocre tracking. Have to work on auto guiding it some day if it will take the weight. Thinking of getting a Baader MPCC coma corrector to clean up the corners. May have some flats around I can use....
by Stargazer_Ken
Mon Jun 29, 2015 4:39 pm
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

Roland,

I have uploaded 10 of the CR2s, zipped, about 223mb. Please download them and see what you get.

https://drive.google.com/open?id=0B7HOe ... authuser=0



Thanks,
Ken
by Stargazer_Ken
Sun Jun 28, 2015 5:31 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

dcraw -4 -o 0 -D -t 0 -k 0 -H 1 -T my_raw_files Ken. Try the options above. This will create 16bit integer CFA monochrome no flip/rotation tiff files. So no matter what the camera rotation all files will be the same orientation. Stack in DSS. This should produce an RGB stack. Ignore the white balan...
by Stargazer_Ken
Sat Jun 27, 2015 5:01 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

For grins, I had DSS use the CR2 files and told it to use the camera WB. I selected No Background Calibration. I got pretty much the same results though this time I pretty much took all the defaults and skipped the fancier stuff like HDR and Magic etc. Pretty much processed like this in another thre...
by Stargazer_Ken
Sat Jun 27, 2015 4:11 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

Hi Rowland, It's a factory camera, no modifications at all. The images were taken looking to the south, directly toward the light pollution of Colorado Springs. I am really impressed with StarTools ability to deal with that light pollution. If it had been modified to have the IR filter removed, I wo...
by Stargazer_Ken
Fri Jun 26, 2015 7:08 pm
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

Ok, put the stacked, not white balanced FTS file on Google Drive for anyone who wants to play with it.

https://drive.google.com/file/d/0B7HOeR ... sp=sharing

The image on this page looks a lot like the color in mine.

http://apod.nasa.gov/apod/ap140527.html

Ken
by Stargazer_Ken
Fri Jun 26, 2015 4:33 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

Re: M17 Color

P.S. Suppose I should have included it was done with a Canon T2i. I ran the CR2s through DCRaw using the command line I found here in the forums to remove the white balance. I found I also had to add an argument so it wouldn't use the rotation information from the camera. DSS doesn't like rotated fi...
by Stargazer_Ken
Fri Jun 26, 2015 4:29 am
Forum: General Discussion
Topic: M17 Color
Replies: 17
Views: 20628

M17 Color

Hi Folks, Also a newbie but have been reprocessing old data like mad and learning along the way. I processed an M17 image and have interesting colors. I suspect that StarTools actually did the correctly but everyone else's is mostly if not all red. Mine more resembles some of the images that were do...