View Single Post
Old 13-02-2009, 09:00 AM
allan gould's Avatar
allan gould
Registered User

allan gould is offline
Join Date: May 2005
Location: Brisbane
Posts: 4,485
Originally Posted by pmrid View Post
Answering the question about how you focus on a guidestar, the thing comes with a parafocal eyepiece (I believe). They just quoted me EUR398 (apx A$780) delivered. Not cheap!.

This was the same procedure for the 201XT and proved to be its achilles heel. Been there done that. If the star is not focussed properly, the eye can accomodate a miss- focussed star quite well, then the star is bloated and your guiding accuracy goes down a lot. Thats why you NEED to see a star, select the best in the field or get a clean field, focus accurately, lock on to it and then guide. Sorry there is no free lunch when it comes to guiding
Reply With Quote