Re: [ATM] steel tubing for mirror cell

[William Chang <williamichang@yahoo.com>]

I agree with both of you :-) and can suggest a reverse-Highe design
where the triangle is on the outside, the pivoting "bars" on the inside
of the triangle.  This way the triangle more easily reaches beyond the
mirror for top-down collimation.  Also, I was thinking one tip of the
triangle might "bolt" into the side of the mirror box, while the two
lower tips of the triangle collimate parallel to scope axis.  Any
reason that wouldn't work?  -- William (Saratoga, CA)

> From: "James Lerch" <jlerch1@tampabay.rr.com>
> To: "ATM" <atm@atmlist.net>
> Date: Sun, 27 Feb 2005 13:30:29 -0500
> Subject: Re: [ATM] steel tubing for mirror cell
> 
> ----- Original Message ----- 
> From: "Mark Holm" <mdholm@telerama.com>
> To: <atm@atmlist.net>
> Sent: Sunday, February 27, 2005 13:04
> Subject: [ATM] steel tubing for mirror cell
> 
> 
> > 4. Your collimation adjustments can be spaced farther out, even outside the 
> > mirror diameter.  This makes collimation adjustment finer and opens several 
> > possibilities:
> >
> > a. Collimation mechanism can be partly beside rather than behind the mirror. 
> > This makes for lower profile.
> >
> > b. Collimation can be done from top.  (Just arrange it so your collimation 
> > tool can't hit the mirror.)
> 
> Mark,
> 
> I agree with all your points, so much in fact, here's a picture showing one of 
> the 6 point cell setups on my 16" Bino.

_______________________________________________
ATM mailing list http://www.atmlist.net/