Quote:
Originally Posted by OICURMT
This statement is is a bit vague...
There is a lot of AP performed on fork mounted telescopes and the fork design is one of the most tried and true. Depending on the use, longer wide field exposures can be achieved without a wedge, depending on the exposure time. The Fastar system only requires a stack of 30 second exposures, thus limiting rotational effects.
OIC!
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Fastar is not available for the LX90ACF though which the OP is buying I think. It also reduces your focal length on an 8mm scope to under 600mm, and only works with certain cameras and scopes so there are considerations there.
I never managed to get long guided exposures happening with the fork on a wedge at full focal length, I found it was just too unstable whatever I mounted it on.
I never tried a derotator, what are they worth?