Quote:
Originally Posted by strongmanmike
Yep, lookin good Ray, being so bright most of the outer features of this neb show up in rather short exposures but the solid amount of exposure time here has helped to reveal the few very faint features like the perpendicular ray emanating form the core and when the seeing cooperates it is always a bonus too. You seem to be getting lucky with the seeing lately 
Mike |
Hi Mike. Yep, have had a two good seeing sessions - in amongst 4 arc sec nights of course.. Am finding that Skippy Sky does a pretty good job of predicting seeing.
Quote:
Originally Posted by Octane
This is going to be amazing!
Ray, you mention you're using 2, 3 and 5 minute sub-exposures. Is this to preserve dynamic range (I'm just thinking about your other thread, with regards to getting a specific ADU for your camera)?
H
|
Hi H. Yes, this thing is very bright, so the core saturates at anything longer than about 2 minutes on my system. I should have used much longer subs to get the dimmer bits, but the seeing was coming in patches with wobbly bits going across a few times an hour and messing up the subs. I was able to use most of the 5 minute subs, but would have had to discard much more of the data if I had used longer subs - better to put up with some extra read noise.
Regards Ray