Re: [ATM] which Collimination tools?

[John Moore <jamoore42@yahoo.com>]

Hi All,,
 
Thnx to all who replyed,, sounds like they are tools that are nice to have,,
but not mandatory,,  I'LL let my budget decide.
 
thnx for the help!!
 
John Moore.

>>Jan van Gastel <jhm.vangastel@wanadoo.nl> wrote:
I use a laser to point the optical axis of the eyepiece at the center of the
primary, by manupulating the secondary or/and the focuser and I use
callibrated cheshire to point the optial axis of the primary at the focal
point, by turning the primary's collimation bolts. Just a couple of minutes
work in the field and very accurate.

Before I had a laser I used a sight tube to point the optical axis of the
eyepiece at the center of the mirror, but a laser works easier.

If the secondary is not centered well enough in the focuser, this has to be
done first (using a sight tube), but mine is always in the right place,
because I check it at home sometimes.

Jan
http://home.wanadoo.nl/jhm.vangastel/Astronomy/<<




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