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Very nice! I assume that it was taken at the prime focus of your 65mm
scope. Given that M42 is situated in a very unforgiving part of the sky,
as far as star trailing is concerned, I would love to know how you can get
2 min subs with little or no sign of trailing, with only rudimentary
alignment. With my 1000mm f/l f/5 scope at prime focus, and with
alignment within 1 degree in alt and az [which is obviously fairly
rudimentary]I can only get perfectly round stars up to about 10 secs.
I would like to be able to get somewhat longer subs without
having to obtain accurate PA.
raymo
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