Search found 37 matches

by Starry Eyes
Thu Sep 07, 2017 1:53 pm
Forum: Image Processing Troubleshooting
Topic: What to do about these weird gradients?
Replies: 7
Views: 4483

Re: What to do about these weird gradients?

For your flat problem, Have you tried sky flats? Easy to do, Cheap, just use some blue sky with the OTA of your choice during the morning after dawn. (Helps with the temperature issues & make sure that the rig is out of direct sunlight). Make a histogram about in the middle, and shoot ~ 50 of them. ...
by Starry Eyes
Sun Mar 12, 2017 2:48 pm
Forum: Gallery
Topic: AstroBin Image of the Day
Replies: 2
Views: 2971

AstroBin Image of the Day

Image


Stacking done in PI, the rest, STools!

PJM
Manzanita Observatory
by Starry Eyes
Thu Nov 17, 2016 4:45 am
Forum: Feature Requests
Topic: Mask Construction
Replies: 3
Views: 3062

Re: Mask Construction

Sure Ivo, here's one example I often save the deconvolution generated mask early on. Then after doing more work,( full mask, whatever) and after noise reduction I'll want to sharpen and use fractals on the prominent features but don't want to include sky backround and especially the stars and halos ...
by Starry Eyes
Thu Nov 17, 2016 4:42 am
Forum: Feature Requests
Topic: Mask Construction
Replies: 3
Views: 3062

Re: Mask Construction

Sure Ivo, here's one example I often save the deconvolution generated mask early on. Then after doing more work,( full mask, whatever) and after noise reduction I'll want to sharpen and use fractals on the prominent features but don't want to include sky backround and especially the stars and halos ...
by Starry Eyes
Sat Nov 12, 2016 3:59 am
Forum: Feature Requests
Topic: Mask Construction
Replies: 3
Views: 3062

Mask Construction

Save a saved mask into a current active mask in the session. Now I need to save a mask open a new session of star tools ( very inconvenient is in tracking mode), and use the layer module to combine them, save then open the target image again ect. This would really help with them halos among other th...
by Starry Eyes
Sat Nov 12, 2016 3:15 am
Forum: Image Processing Troubleshooting
Topic: More Colour Issues - Losing the will to live - help!
Replies: 7
Views: 4390

Re: More Colour Issues - Losing the will to live - help!

Try using a mask using fat stars and eliminate the galaxy from the mask. then Color>keep mask>sample. Then still in color>mask>clear>invert(fills Mask)>keep. now you'll be closer! this uses the nearby galactic stars for white color balance. Don't forget to use the max color icon to help fine tune wh...
by Starry Eyes
Sun Aug 07, 2016 2:32 am
Forum: General Discussion
Topic: Xisf Format
Replies: 2
Views: 2677

Re: Xisf Format

Very good, Sir!
by Starry Eyes
Wed Jul 20, 2016 3:37 pm
Forum: General Discussion
Topic: Xisf Format
Replies: 2
Views: 2677

Xisf Format

Any plans to include the xisf format to ST?. For what ever reason I've had to give up DSS for my stacking and am using that other really complicated PI for linear processing. Of course I save to 32 bit fits for ST. Seems to come out alright. Is there a practical difference between the integer and fl...
by Starry Eyes
Wed Jun 29, 2016 10:49 pm
Forum: General Discussion
Topic: Difference between TIFF and FITS files
Replies: 5
Views: 6704

Re: Difference between TIFF and FITS files

Some time ago I did DSS of assorted Globulars and processed them in STools We found (Ivo & me) that the 32 bit int Fits showed more dynamic range and definition than the tiff format for these objects.

M3 http://astrob.in/98042/0/
by Starry Eyes
Mon Feb 23, 2015 9:55 pm
Forum: Gallery
Topic: Comet Solas in Galaxy Group ACO 1367
Replies: 0
Views: 1472

Comet Solas in Galaxy Group ACO 1367

http://astrob.in/158154/B/rawthumb/gallery/get.jpg [/url] Here's a deep field done with my 6" Newtonian. There are 19th mag galaxies visible. The Sb spiral NGC 3883 is in the uper right corner. The bifurcation in the comet was caused by the Meridian flip. Took a while. Got 0.6" RMS out of the Atlas...