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Old 03-07-2010, 11:20 AM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,691
Quote:
Originally Posted by avandonk View Post
Not a bad effort Mike. Just shows how a near perfect refractor and an ultra sensitive camera with high signal to noise can perform.

The signal in the 18" Schmidt is about nine times that of your six inch APO Mike. This means the signal to noise of your camera is about ten times better than David Malins film and enhancement by masking method.

The only parameter that matters is signal to noise!

I would try just enhancing your green data as it does not suffer as much as blue does from extinction and red from light pollution. The green data should have far better signal to noise for the really faint stuff. The atmosphere is also more transparent for green wavelengths.

When my 300mm lens grows up it wants to be as good as your six inch APO.

We used to have a saying in CSIRO 'When only one person has done something exceptional for the first time it is a major breakthrough. When we are all doing it, it is just routine.'

It is amazing what bad weather and an active informed mind can come up with.

Great work.

Bert
Cheers Bert. I didn't think I had picked this much up but a bit of processing magic and well....

...oh and it was the 48" (1.2m F2.5) UK Schmidt that David used for his version

Mike
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