Losmandy g11 Mount Issue

[TrevorW]

Around 1 hour into a tracking session the mount guiding using PHD2 was perfect then all of a sudden the DEC/Ra goes off the chart this has happened twice recently around the same period into a session then seems to settle down a few frames later, is there anyway of telling whether you have a problem with the main drive gear

[Startrek (Martin)]

Trevor,
Spurious mount faults are hard to pinpoint and end up being on long drawn out trial and error , process of elimination a activity

My advice is to upload your imaging session PHD2 log file and post on the PHD2 forum. PHD2 site ( manual ) shows you how to do this

Bruce will review , analyse and come back to you in a timely manner

Saves all the guess work

Unless ….. folk here on IIS have experienced exactly the same fault with the same mount.

Cheers
Martin

[TrevorW]

Well last night did a run of 90 plus subs 3 hours total and only had to throw out one due to bad tracking so I'm not sure what is happening

[Startrek (Martin)]

Trevor,
Glad you had a better guiding session
This pdf from PHD2 is well worth a read as it does give some indication of issues arising from time to time.
Looking at the graph doesn’t give you the full picture on a problem but does provide a possible idea what it could be as a starting point

Guide logs submitted to PHD2 for evaluation are the best way to go

https://openphdguiding.org/Analyzing...Guide_Logs.pdf

Cheers
Martin