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Old 12-01-2009, 10:56 AM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,475
I read the manufacturers website with some interest.

I remain very skeptical however.

A super accurate RA shaft rate simply does not make a perfectly guided image.

I have seen stars randomly drift in RA *and* Dec for various reasons, and while RA rate errors are one cause, there are many others, well like: refraction, convective cells, mirror flop, differential flexure, wind buffeting
and thermal expansion/contraction of the telescope and telescope mount components, plus sag in the camera mountings etc.

In short, if you think one of these new wunderkind devices will deliver perfectly round deep sky stars at 2500+ mm... with no guiding...I think you'd also be in for a big disappointment.

Last edited by Peter Ward; 12-01-2009 at 12:13 PM. Reason: jetlag!
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