Re: Star Testing using large disc

Tenifer wrote:

Once I owned a 8" SCT. After using it for year.
I still could't see more than two bandings in jupiter
even under clear seeing and using all kinds of EP
from pentax smc orthos 7mm to televue radians.
I couldn't see any other details. So if that particular
scope is just 1/3 wave. It would explain it. This means
had I got a 1/7 wave 8" SCT. I should have seen
more than two bandings.


Did you make SURE about it's collimation ?

SCT's and planetary viewing in general are VERY
particular about critical collimation. And only
a star test will tell weather it is truly collimated
well. There's no other way for SCT's

Being a visual observer exclusively the numbers
don't really mean much to me, as much as a star
test and collimation before every observing session.

To me, scopes are a means to an observational end.


Clear Skies :)


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AM
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