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Thanks Colin.
Yes Mike S has shown the Trius 694 with inch F3.8 is an excellent setup.
Roland Christan though uses a QSI68wsg8 when he tests the RHA scopes.
I am finding the 16803 (at 1.67 arc secs/pixel) is giving excellent results at around minimum of 4 hours and preferably around the 6 hour band. 6-8 hours is a good exposure target with this setup. It will be deep and rich.
The 814 didn't come up so well. I guess in good seeing though it would be hard to beat as it is giving .66 arc secs/pixel which I thought was ideal under good conditions. Roland goes for arc sec /pixel based on average seeing of around 3 arc secs. I think my seeing at home is more 2-3 so .66 arc secs to 1 arc sec would be ideal with 3X sampling. The 8300 sensor gives you .96 arc secs hence he goes for that.
Greg.
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