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6303
Hi Greg. I own an STL6303 with a class 1 chip. Blooming can be a challenge if there is a bright field star for LRGB but it is usually manageable. Goes great on deep galaxies and narrowband of course. The 6303 chip benefits from deep cooling - I try to run my STL at minus 20 or -25C - see Richard Crisp's tests on cooling. So the STX 6303 is a well priced option given its deeper cooling than the STL and the current discounts on offer. I was keen on a Proline or Microline 6303 but these are comparatively expensive, but based on my own experience of FLI performance with my Proline it would be well worth it. Neil Fleming uses an STL6303 very successfully with an FSQ on deep narrowband. There are plenty of shots with fast ASA newtonians and 6303 chips around too.
The other chip to consider is the 16801 -possibly ideal if your telescope has the covering ability- the 16801 is the NABG version of the 16803 - higher QE than the 6303 and the 16803 - not sure about well depth. However, a much more expensive option than the 6303 or the 16803.
guy
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