Re: A Question Regarding an AP900 Mount

Liam, thx for the quick reply.

I am using the CP2 as my mount is from the early 2000's.

I'm connected from the ASI Pro via a USB to serial cable.

You don't think it could be the CP2 to dec axis cable? 

I've also noticed poor tracking even unguided. In a 5 minute exposure I sometimes see a double image. Which is why I'm questioning the CP2 to dec axis cable and not the serial cable.



Sent from my Galaxy

-------- Original message --------
From: Liam Plybon <liam@...>
Date: 2021-04-08 12:08 p.m. (GMT-05:00)
Subject: Re: [ap-gto] A Question Regarding an AP900 Mount



What  CPx are you using to drive the motors? A CP3 or a CP4?


If the keypad has no issue moving the dec axis, then the motors and the mount are fine. I suspect a software issue or cable issue. I would start with using a different cable and connector to reach the CPx. For example, on a CP3 you could swap out your serial cable and use the second serial port.


Liam Plybon



From: <> On Behalf Of
Sent: Thursday, April 8, 2021 10:59 AM
Subject: [ap-gto] A Question Regarding an AP900 Mount


Hi Everyone

I'm looking for some insight.  Last night while using my AP900 mount, my software was sending the mount to a location in the sky and I could hear the dec axis motor but there was no movement of the dec axis.

When I tried to manually slew the mount via hand controller, it moved ok.  And later did slew to other locations.

I am using the ASIair pro system to control the mount

When I grasp the dec axis and try to move it, it seems to be solid with no backlash.

Any insight into what may have happened to the dec axis not moving?  



Join to automatically receive all group messages.