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Old 21-09-2011, 07:52 AM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
Posts: 18,165
Nice shot Gordon.

Congrats on the ML8300. I have been using one for 2 years now and its an excellent camera. The Microline body is a great platform for any chip.

You've got some little diffraction spikes on the brighter stars. That must come from the microlenses?

The 8300 chip has small wells. You can see this on the brighter stars looking a bit fat from oversaturated wells.

I get best results using shorter exposures so the wells don't fill up. 25,500 electrons is the well capacity compared to 85,000 to 100,000 for a 16803 and about 60,000 for a 11002 chip. So that's the only thing to be aware of with this chip, especially with a faster scope (slower scopes don't show that). With shorter subs you won't get that effect on the brighter stars which in my case I felt spoilt several images of mine. You notice it more when you also image with a 16803 chip which is perfect in all regards.

Greg.
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