Re: [ATM] 8" F/4.2... Done?

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

Nils Olof Carlin wrote:
>> Joe wrote:
>>I've been an ATM for over 30+ years, and rarely used the center "Dot"
>>99% of the time I never do.
> 
> This tickles my curiousity - what, if anything at all, do you do instead? Do 
> you leave your primary uncollimated, perhaps feeling that you've seen it all 
> after 30+ years anyway? Or perhaps you only use your telescope the remaining 
> 1% of the time?
> ;-)
> N O 

For me, a center dot allows me to precisely align the secondary to the 
primary.  After that, I can use star testing to do the primary 
alignment.  (I usually use a laser to get it close, and then tweak it 
later at the eyepiece).

Jason, a center dot is easy - just temporarily stick on a hole 
reinforcer in the center to get the secondary aligned.  You can just 
peel it off when you're done, and then go back to figuring.

	Mike L.


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