From: Milton Aupperle <milton@outcastsoft.com>

Date: March 8, 2006 2:10:45 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Going to try building a 12.5" f/3.5 astrocamera

Hi Tim;

Sounds like an interesting project and i can't wait to see how it turns out.

Remember you have an optional 1/4" screw thread mounting plate on the Flea camera, which will make it a easier to mount it on something like a single arm. And don't forget about adding something for holding filters too. If you use a light bucket like that in light polluted skies, you'll want a LPR on it.

TTYL..

Milton J. Aupperle

President

ASC - Aupperle Services and Contracting

Mac Software (Drivers, Components and Application) Specialist

#1005 - 815 14th Avenue. S.W.

Calgary Alberta Canada T2R0N5

1-(403)-229-9456

milton@outcastsoft.com

www.outcastsoft.com

On 8-Mar-06, at 12:40 PM, Tim wrote:

Using a 12.5" f/3.5 full-thickness primary and a plywood tube I built for my cassegrain years

ago.

But instead of the gimongous secondary mirror that came with it, I'm going to mount my Flea

right at the prime focus of the mirror.  Only thing I have to figure out is the focusing

mechanism.  I'm thinking of mounting a curved spider on a pair of ball bearing drawer slides

so I can move the camera via a threaded rod and travelling nut (focus  knob), controlling the

backlash by having a spring preload on the assembly.

Got to run to lunch, more later.

-Tim.