Re: AP1600 autoguiding gone bad

Roland Christen

Guide at 1x. Going slower will not help.
Make sure you have a good calibration run.
Remove all backlash compensation, both in the keypad and in the guide software.

If using PHD2, you should first use the mount wizard to find out what you have fundamentally. You can find out things like PE, Dec backlash, sky scintillation and other good stuff.

A good calibration near the celestial equator and meridian is a MUST. Without that, you won't be able to guide successfully.


-----Original Message-----
From: Greg Bradley via <bradgregley10@...>
Sent: Sat, Jan 9, 2021 5:31 pm
Subject: [ap-gto] AP1600 autoguiding gone bad

I have a usually reliable AP1600 mount.
It is slewing fine but autoguiding suddenly went wild a little while ago.
So normally I get very small guide errors .2 to .6 arc sec
guide errors. They suddenly went to 15-20.
I couldn’t get it to callibrate either using relays.

I switched to pulse guiding and I could callibrate.

But guiding is still wild. I tried various settings
for the guiding.

I pulled apart the electronics box and inside it looks lile

I noticed in the driver you can set the guide rate and it was set at 1 so I reduced that to .5 and I can set it lower. I will disconnect the hand controller
tonight in case that is having an effect.

Any suggestions?

I am using SkyX, ascom mount and the AP driver. Its an AP cp3 electronics.

I am able to do plate solving, polar alignment using TPoint so go to’s are working.



Roland Christen

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