Re: [ATM] My 12.5 inch project

["Francis J. O'Reilly" <foreilly@verizon.net>]

Thanks for the encouragement Bob, I'm sure that your right. I'm going to 
bring the mirror to a workshop I attend in Tolland CT given by Dick Parker 
in January and February. We'll look at it critically then with abunch of 
guys and probably come to the same conclusion. Then I'll figure it. Dick 
uses a double pass autocollimator which goves a null test for a parabola. 
The scope should be pretty neat when I complete it, hopefully in time for 
Stellafane.

 For right now, I'm completing the optical tube assembly on an eight inch 
f/6. I just completed the mirror last weekend by aluminizing it in 
Washington.

I'll let you go, I have a lecture to prepare for December 7.

Best regards,

Francis
----- Original Message ----- 
From: <waa-webmaster@westchesterastronomers.org>
To: "'Francis J.O'Reilly'" <foreilly@verizon.net>
Sent: Saturday, October 06, 2007 3:25 PM
Subject: Re: My 12.5 inch project



>At what point do I call it good and start
>figuring this piece of glass?

I remember a similar situation when we were working on the club's 8-inch 
mirror
in 1997. No one could come to an agreement and I think it was you who said 
"Its
good enough ... Let's get it figured" (or polished) and in the end it turned 
out
to be a nice mirror.

12.5, f/7 ... going to be a great planetary 'scope.

<Bob>


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