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Dave the 3x barlow is for the LPI to image Saturn and later jupiter. I missed Saturn last year and don't want to miss the second best opposition for the next 29 years. Which is on 13 January 2005 (weather willing). So the barlow is not for viewing at all, just for imaging.
As for Bobs knobs, I just feel that my collimation could do with a bit of a tweek. I don't really want to attempt this without something that will make it easier. And; my deep sky shots seem to indicate that collimation may not be really all that flash.
Thanks all for the advice thus far, really appreciated. This scope is my first SCT. All my other scopes in the past have been Newtonians, which are easy to collimate. This SCT I am not so sure. I don't want to mess this up.
Incidently, I have noticed that with the focal reducer on, collimation seems more of a problem than without it. When I check for collimation without the focal reducer, it looks pretty good, but when I check with the FR on I get what looks like pretty bad. Is this a by product of the FR and if I collimate do I do it with the FR on or off?
Paul
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