|
Hi Ray,
I probably should have read the other thread before posting my reply...but here we go...
The degree of dithering needed to minimise residual noise most likely depends on the camera you have, so I would suggest creating quality bias and dark frames and taking time to inspect them.
My understanding is that very few systems would be keeping stars exactly in the same place on the CCD, and even with top end mount you will have sub-pixel variations from sub to sub. Also, I always believed that given the same amount of subs, drizzle integration will result in higher noise in the final image as opposed to non-drizzled integration?
|