Quote:
Originally Posted by gregbradley
Looking very good Allan.
2 minutes does seem pretty short. You have to get above the noise floor of the camera and 2 minutes is extremely short and won't do that.
Also total exposure time needs to be higher and things will improve as the hours build up.
But the main points are great, sharpness, round stars.
Adding some Ha will help as well.
Greg.
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Thanks Greg,
I hope to do some magical things with this setup.
A 10" F4 is noticeably faster than an 8" f6.
This scope should be over 3 times faster than the 8" f6 I used before.
That's why I thought that 2 minute subframes would be equal to about 6 minutes with the old Newt.
I was hoping to get good signal to noise benefits by stacking rather than taking long exposures.
It seems though that my next imaging session should use longer exposures.
I have had excellent results with 20 minute exposures using Ha
binned at 2x2 with the old Newt.
Just one frame of 20 minute Ha brought this picture to life & made it pop:
https://www.flickr.com/photos/247194...in/photostream
cheers
Allan