From: Milton Aupperle <milton@outcastsoft.com>

Date: April 7, 2008 3:30:17 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Guiding Celestron mount?


Dear Alen;


No it is not possible to guide using a celestron mount via a serial port with Astro IIDC. The Celestron protocol for controlling the mount does not have any means of saying "move 1 second west and 0.2 seconds north" and you have to tell it move it as an absolute location (Ra Hour Minutes, Dec Minutes seconds). So you'd have to have the scope calibrated with 3 stars before it would work, and even then it doesn't work very accurately (+/- 1.0 arc seconds).


However we can guide with a Celestron type mount (i.e. CGE /  HEQ5 / HEQ6 / Orion Atlas / Orion Sirius) using the ST4 Auto guider port and a GPUSB box from ShoeString Astronomy :


http://www.store.shoestringastronomy.com/products_gp.htm


and Astro IIDC.


HTH..


Milton Aupperle


On 7-Apr-08, at 6:57 AM, alien2108 wrote:


Hey!


Am I wrong or is it really not possible to autoguide Celestron mounts

(CG-5)? It does connect, but immediately after connection my mount

starts to move. After I stop it with HC, controls in Astro IIDC

doesn't work?


BR,

Alen