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Old 10-01-2021, 09:24 AM
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gregbradley
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Advice needed to debug AP1600 mount autoguiding

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
new.

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.

Greg
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Old 10-01-2021, 11:17 AM
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DiscoDuck (Paul)
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Greg, is it possible for you to post some sort of guide log/screenshot(s) so we can see what it is doing while guiding?
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Old 10-01-2021, 06:14 PM
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I’ve checked the save guide log option so
I should have something tomorrow.
Greg
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Old 11-01-2021, 08:50 AM
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Ok duh moment. I checked the polar alignment that I had done
using 2 runs if T Point accurate polar alignment routine. I used Pempro as that
has a polar alignment wizard which has been fairly accurate in the past.

There must be something off with my TPoint as my polar alignment
was not just a bit off but waaay off.

I was able to get an image done. At least 1 night out of 3 rare clear nights!

The more stupid thing about it is this same thing happened once before.

I think I’ll return to the policy if its all working din’t change anything. A polar alignment check/tweak is only needed if results go poor.

Greg
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Old 12-01-2021, 12:34 AM
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Logieberra (Logan)
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Do you do an annual re-grease?
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Old 12-01-2021, 10:27 AM
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gregbradley
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Quote:
Originally Posted by Logieberra View Post
Do you do an annual re-grease?
I have done a regrease but it was longer than a year ago. Perhaps 2 years ago.

Good point. Its definitely a possibility in the hot Aussie summers that the grease could be an issue.

Greg.
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Old 12-01-2021, 04:47 PM
AdamJL
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Quote:
Originally Posted by Logieberra View Post
Do you do an annual re-grease?
what now? I didn't know you were supposed to do that!
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