Re: [APML] Collimation of Vixen/Orion R200SS question

[2bfrank@charter.net]

Lasers are great, but you still have to follow the basics.  You can align
the laser dot with the spot on the primary  and not properly collimated. I
use a sight tube to position the secondary mirror to the focuser (ref:
"Perspectives on Collimation"). I use the laser to confirm that the mirror
is in the proper position. Then I align the dot to the spot on the
secondary.
Frank
----- Original Message -----
From: Herm <hermperez@worldnet.att.net>
To: <astro-photo@seds.org>
Sent: Friday, August 17, 2001 6:24 PM
Subject: Re: [APML] Collimation of Vixen/Orion R200SS question


> You have a point there..
>
> Offset is built-in to the spider, not adjustable.. it is possible that the
> secondary could be rotated and thus no full illumination. Making a sight
tube
> with a film can should suffice to take care of that problem.
>
> 2bfrank@charter.net  wrote:
>
> >Check to see that the secondary mirror is in the proper location to the
> >focuser.Use a site tube, or use a hologram laser. If the secondary is not
> >properly aligned, you will never have it fully collimated.
>
> Herm
> Astropics http://home.att.net/~hermperez
>
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