Quote:
Originally Posted by strongmanmike
"What do you do if you don't like Alnitak..?" in the words of Ms Hall "well, fortunately... I love it!" (go to 2:10 mark  )
Semantics aside, overall, an excellent Horsey Greg 
Mike |
Hehe, yes I am happy with it for a first light. It can only get better from here.
Quote:
Originally Posted by DavidTrap
Very nice Greg - I've had little chance to use my camera over summer...
Are you able to share what mode you used for this broadband image?
DT
|
Mode 2 Gain 26 offset 10.
I think these are the default settings for Mode 2. Mode 1 for narrowband and Mode 3 for fast large optics for the extended full well. This mode might be more appropriate for the Honders at 305mm aperture and F3.8.
AP130GTX with the quad compressor might be good with mode 3 as well or stick to Mode 2 for broadband imaging.
I am not sure how much offset affects things. I experimented with my QHY294M and 2 quite different offsets. I checked the images in CCDstack - they looked almost identical. The histogram peaks shifted slightly.
Perhaps a higher offset can remove some of the background banding along with higher gain.
These Sony sensors have a dual gain amplifier so read noise drops significantly at some point. I am sure that point is in the graphs on the QHY site. I looked it up, its Gain 26. Read noise drops considerably.
Greg.