RE: ATM forwarded msg on collimation

[Art Russell <artrussell@mindspring.com>]

On Thursday, July 17, 1997 11:24 AM, UC007@aol.com [SMTP:UC007@aol.com] 
wrote:
> In a message dated 97-07-16 13:27:36 EDT, sb635@delphi.com (Steve Bell)
> writes:
>
> << Now, if you do have a nice focuser whose drawtube doesn't rock (like
>  many of the good quality Crayfords), then a laser collimator can
>  actually be used to line up your focuser, secondary and primary. In
>  fact, then, imo, they produce the best collimation possible. And on my
>  system, whenever I've afterwards taken a look through a peep-hole cap,
>  it's been in perfect agreement with the laser.
>   >>
> Hi Steve,
> I am in complete agreement with you.
> Regards,
> Bill Fries, EAS
> Http://www.naples.net/Clubs/eas
>

In thinking about confirming the orientation of my focuser, a 2 inch 
Tectron low profile focuser, would it be appropriate to consider center 
spotting the diagonal? Is there a loss of transmission as a result? Somehow 
the idea of spotting one of the holy of holies (although I did centerspot 
the primary) doesn't click for me. Any problems with this approach?

Thanks!


Clear Skies!

Art Russell

Doctoral Student, Educational Psychology, Georgia State University, 
Atlanta, GA
Part Time Amateur Astronomer, Deep Sky Zombie Wannabe

"Only the educated are free." -- Epictetus, Discourses