Re: AT10RC on a Mach One


Hi Ned

It's a Feathertouch focuser (or any other brand) that's installed outside the OTA. Use it instead of the 'inside' focuser.

Using one like that you can set the OTA focuser somewhere in the middle, and use the outside focuser to control focus. Then, once collimated, you shouldn't have to do that again because you never 'bother' the tube for anything.

Wish you luck.

From: []
Sent: Thursday, August 20, 2015 12:07 PM
Subject: Re: [ap-gto] AT10RC on a Mach One

What is an "outside focuser"?

On Aug 19, 2015, at 4:19 PM, Steven Elliott [ap-gto] wrote:

I use an RC with an outside focuser and CCD Inspector - easy to collimate, and very very very accurate - and since focus outside means it stays in collimation forever - unless I move it.

Steve E

Ned Smith

N 34,53,38.13
W 85,28,17.10
Near Chattanooga, TN



To UNSUBSCRIBE, or for general information on the ap-gto list

Yahoo Groups Links

Join to automatically receive all group messages.