Search found 90 matches

by ChrisLX200
Wed Dec 24, 2014 5:53 pm
Forum: Gallery
Topic: M42
Replies: 3
Views: 2203

Re: M42

Very nice! Good core control.

ChrisH
by ChrisLX200
Mon Dec 22, 2014 8:16 pm
Forum: Gallery
Topic: IC433 Jellyfish neb - narrowband
Replies: 4
Views: 2839

Re: IC433 Jellyfish neb - narrowband

Many thanks Andy and Ivo, appreciate you comments :)

ChrisH
by ChrisLX200
Mon Dec 22, 2014 7:59 pm
Forum: Image Processing Troubleshooting
Topic: Am I over doing it?
Replies: 3
Views: 2498

Re: Am I over doing it?

The longer you expose then yes, more background noise will accumulate - however, if the target is actually brighter than the background then the signal will always accumulate faster than background noise. You are only interested in signal that is above the background noise level, that is the only da...
by ChrisLX200
Mon Dec 22, 2014 12:03 pm
Forum: Gallery
Topic: IC433 Jellyfish neb - narrowband
Replies: 4
Views: 2839

Re: IC433 Jellyfish neb - narrowband

Just stunning! :shock: The stuff you're producing is of a very high caliber Chris. :bow-yellow: Please keep it up! I'm happy ST performs to satisfaction - in particular the noise reduction. It's this feature (courtesy of the Tracking paradigm) that really puts ST ahead of the pack, as it should ind...
by ChrisLX200
Sat Dec 20, 2014 2:37 am
Forum: Gallery
Topic: IC433 Jellyfish neb - narrowband
Replies: 4
Views: 2839

IC433 Jellyfish neb - narrowband

This is a composite of Ha, OIII and SII data (Astrodon 3nM filters) using 30min subs (total about 10hrs - can't recall for sure without checking!) I was very happy with the way StarTools revealed detail through sharpening, Deconvolution and contrast enhancements. Noise was magically reduced by the d...
by ChrisLX200
Sat Dec 20, 2014 2:18 am
Forum: General Discussion
Topic: Aaaarrrrgggg, Help
Replies: 13
Views: 13185

Re: Aaaarrrrgggg, Help

Bias and flats you need, but darks are a bit of a waste of time with DSLRs because the camera is not temperature controlled and so it's very difficult to obtain a valid master dark (the camera will heat up significantly during exposures unless you get rid of the battery and use an external power su...
by ChrisLX200
Fri Dec 19, 2014 6:10 pm
Forum: General Discussion
Topic: Aaaarrrrgggg, Help
Replies: 13
Views: 13185

Re: Aaaarrrrgggg, Help

Bias and flats you need, but darks are a bit of a waste of time with DSLRs because the camera is not temperature controlled and so it's very difficult to obtain a valid master dark (the camera will heat up significantly during exposures unless you get rid of the battery and use an external power sup...
by ChrisLX200
Wed Dec 17, 2014 6:54 pm
Forum: General Discussion
Topic: Aaaarrrrgggg, Help
Replies: 13
Views: 13185

Re: Aaaarrrrgggg, Help

I'm afraid it's going to take someone smarter than me to resolve some of the problems in that image - so I'll let Ivo show how it's done :) Meanwhile my pathetic attempt is below... (hey, at least you can see the HorseHead now!) http://i970.photobucket.com/albums/ae183/ChrisLX200/AutosaveST_zps5f25e...
by ChrisLX200
Wed Dec 17, 2014 7:30 am
Forum: General Discussion
Topic: Aaaarrrrgggg, Help
Replies: 13
Views: 13185

Re: Aaaarrrrgggg, Help

Hi Glenn, in case you missed it there is a PDF StarTools Manual (unofficial but still an excellent resource). Well worth a read :)
http://www.startools.org/download/StarT ... ficial.pdf

ChrisH
by ChrisLX200
Tue Dec 16, 2014 10:52 am
Forum: Gallery
Topic: ngc1499 California Neb (part)
Replies: 4
Views: 3008

ngc1499 California Neb (part)

This is an Ha/SII composite of the California neb - or as much of it as I could fit on the Atik490EX's chip at one go using my NP127is+0.8x reducer. SII channel doesn't have enough subs so it's still a bit noisy, total was 14 and 8 x 20mins respectively. The noise reduction tools in StarTools really...