Search found 3367 matches

by admin
Tue Apr 15, 2014 11:30 pm
Forum: Tutorials & Guides
Topic: Video: M42 H-alpha High Dynamic Range composite processing
Replies: 15
Views: 23108

Re: Video: M42 H-alpha High Dynamic Range composite processi

besides being out of synch my resulting short image is darker than my resulting Long, Hmmm.... Isn't that to be expected? Could you maybe post the two results as a jpeg in this thread? Scratch that... I just saw your images. The issue is simple; you're not suuplying a FIlter Kernel radius! (play ar...
by admin
Mon Apr 14, 2014 7:31 am
Forum: Tutorials & Guides
Topic: Video: M42 H-alpha High Dynamic Range composite processing
Replies: 15
Views: 23108

Re: Video: M42 H-alpha High Dynamic Range composite processi

If I were to find a way to crop the files together in Nebulosity, in order to synch them and make them the same size, would that make my files "non linear", and mess up their use in StarTools? It shouldn't - making data non-linear pertains to the way brightness livels pixels are non-lineary tranfor...
by admin
Mon Apr 14, 2014 3:06 am
Forum: Tutorials & Guides
Topic: Video: M42 H-alpha High Dynamic Range composite processing
Replies: 15
Views: 23108

Re: Video: M42 H-alpha High Dynamic Range composite processi

Hi Tom, Aligning your data sets is something that fits more in the realm of pre-processing. If you're using DSS you can use one stack as a reference frame to align the others against (without using the stack in the stacking result). Could you tell us your processing flow? You should be able to arriv...
by admin
Fri Apr 11, 2014 2:26 am
Forum: Image Processing Troubleshooting
Topic: DSS vs Nebulosity vs ???
Replies: 39
Views: 51900

Re: DSS vs Nebulosity vs ???

Awesome! :thumbsup:
by admin
Fri Apr 11, 2014 12:54 am
Forum: Image Processing Troubleshooting
Topic: DSS vs Nebulosity vs ???
Replies: 39
Views: 51900

Re: DSS vs Nebulosity vs ???

Ok, cool. I'm having best results with 9.17 - a later version introduced a bug (can't remember the issue exactly... :oops:).
Very odd about the wildcards not working...
Does the option '-t 0' (flip image = none) help with the auto rotate?
by admin
Tue Apr 08, 2014 9:56 pm
Forum: Image Processing Troubleshooting
Topic: DSS vs Nebulosity vs ???
Replies: 39
Views: 51900

Re: DSS vs Nebulosity vs ???

When I enter dcraw -v -r 1 1 1 1 -4 -T -S 32767 -k 0 -o 0 *.CR2 in the command prompt of my Windows 8.1 machine all I ever get back is: *.CR2: Invalid argument The conversion works fine if I write out the very lengthy filenames but I don't relish having to do that for all the lights, flats, dark fl...
by admin
Sat Apr 05, 2014 3:55 am
Forum: Bug Reports
Topic: ? buttons in Develop AutoDev - no pop up - not repeatable
Replies: 1
Views: 3365

Re: ? buttons in Develop AutoDev - no pop up - not repeatabl

Thanks Rowland. Will try to repeat this.
by admin
Sat Apr 05, 2014 12:18 am
Forum: Gallery
Topic: Reprocess of Antares Rho Ophiuchus - 1.3.5.279RC
Replies: 3
Views: 4418

Re: Reprocess of Antares Rho Ophiuchus - 1.3.5.279RC

Expertly processed and such a good example of a target that benefits from the Color Constancy algorithm. Hard to believe this is from a DSLR. Glad you discovered the read noise compensation parameter and find it useful! It can really clean up a background that has been overstretched to show mainly r...
by admin
Fri Apr 04, 2014 3:48 am
Forum: Image Processing Troubleshooting
Topic: Help with processing
Replies: 9
Views: 7291

Re: Help with processing

Ok, I redid it with 50% and then tried to follow my log. The colour is a little different for some reason. It looks a bit pixelated to me, the stars don't seem as smooth? What do you think? (I really need a field flattener as well). http://www.astrobin.com/full/88309/0/ Definitely gets rid of the n...
by admin
Fri Apr 04, 2014 1:39 am
Forum: Image Processing Troubleshooting
Topic: Help with processing
Replies: 9
Views: 7291

Re: Help with processing

asterix2020 wrote:So should I "bin" the image first? What do you recommend?
Spot on!
Binning to '50%' should make sure that the interpolation is undone and that noise grain is confined to a single pixel again.

See here for more info if you're interested.