2nd attempt at the Rosette Nebula
Posted 07 December 2012 - 03:47 PM
seeing 8/10 for a yellow/red zone
Sky-Watcher 80mm ED
60Da with Astronomik's clip in CLS Filter
CGEM guided with SSAG package
Stacked in DSS and processed with PS
with Troy's actions, Gradient X Terminator, Noiseware Professional
60 x 120 sec Lights
30 each of Flats, Dark Flats, Offset
Here is what each light frame looks like
Posted 07 December 2012 - 06:55 PM
I noticed your CLS filter does the same thing to your subs as my IDAS does. How do you go about figuring out the right exposure with multiple color spikes?
Posted 07 December 2012 - 08:04 PM
How do you go about figuring out the right exposure with multiple color spikes?
When I'm shooting at home I know 120 seconds will be near my max. I'll usually soot test shots at 3200 ISO, and I image at 800 ISO. So, 30 sec @ 3200 = 120 sec @ 800. I'll look at the histogram and try to keep the blue at about 1/3. You can see the histogram from the single sub on the bottom right of the AstroBin link. I can pretty much tell when I'm getting over run by LP just from looking at the camera image . Sometimes I can only get 60 seconds. If I have time to drive out to the dark, I'm good for 600 sec+
I really wasn't sure what I would get on the Rosette because the subs looked so bad, but I thought I'd give it a try. At the very least I'd get a star field to look at.
Posted 08 December 2012 - 12:19 AM
Posted 08 December 2012 - 09:25 AM
Posted 08 December 2012 - 10:01 AM
Posted 08 December 2012 - 04:41 PM
It's bringing the noise out quite a bit now though.
You could try posting FIT if you would like folks to try. Plain brightening will introduce noise; there are other ways; DD, curves, etc. as you may know. Thx
Posted 08 December 2012 - 07:28 PM
Posted 09 December 2012 - 12:12 PM
Posted 09 December 2012 - 01:27 PM