Detail in the Soul Nebula
Posted 17 December 2013 - 07:08 PM
also I do not see much gain on my system above 15-20 min.
Posted 17 December 2013 - 07:16 PM
Me, too. I'm over the half-max load on my CGEM, and can get 15min at 800mm focal length, guiding with a Mag-Mini, and not have to throw away any subs (last night I shot 4 hours worth at 15min each, kept 'em all).
Agreed, Madratter - too much denoising makes things look far worse.
I'm curious about why you are limited to 5min exposures with a guide scope. What problems are you seeing at longer exposures?
Posted 17 December 2013 - 07:28 PM
Posted 17 December 2013 - 08:19 PM
Posted 17 December 2013 - 10:07 PM
That's close to the same FOV I used for my image of this one, great job!
Thanks! I went looking for yours. Very nice.
Posted 18 December 2013 - 10:31 PM
Posted 19 December 2013 - 12:59 AM
I haven't had a clear sky in weeks.
Posted 19 December 2013 - 02:39 AM
Posted 19 December 2013 - 06:55 AM
Maryland. I don't have the best skies in the world, but far from the worst.
I think you live in an alternate universe!
Posted 19 December 2013 - 02:18 PM
Posted 19 December 2013 - 07:19 PM
The color version can be found here:
And here is a crop of the processed HA data.
Posted 19 December 2013 - 07:41 PM
Posted 19 December 2013 - 08:03 PM
Posted 20 December 2013 - 09:27 AM
looks like tracking is dead on.
I have same mount, been bragging on guiding. not been so good lately. next session will be re learning guiding, settings etc.
Posted 20 December 2013 - 11:31 AM
Terry, the extra HA really did help a lot as did the longer subs. It is visible in the crops here, but especially at full size.
Jim, I would too. One of these days I have to figure the Mosaic stuff out. I tried one on the horsehead and it was a disaster around Alnitak. And that was in just HA.
Dr., I find with my Atlas that balancing is critical, especially for stuff around 20 degrees or so declination. I have also found that at least with PHD2 (I think this happened with PHD1 as well), something weird is going on. I can have pretty bad tracking, deselect and reselect the same star, and then tracking can be great. I don't understand that at all. At any rate, with this being high declination, good tracking is easier to achieve.