the DebugLog is too large to attach
No bother for me, i dont understand it :-)
After the second calibration and short guiding to verify that it is OK, I have selected a target and followed your instructions.
Yep, looks good with a few questions
Using the ripples in the DEC trace as a rough guide of seeing, the RA doesnt show any remarkable spikes or oscillations. That said, the guider was working overtime in RA, but it wasnt heavily unidirectional this time???
Once more i plotted your raw data and overlaid the RA pulses ( at an expanded scale )
You can clearly see from the guide pulses that the direction of drift it was fighting changed at the worm period, so once more i loaded it into PEMPro viewer and reengineered what the unguided trace would have looked like ( assuming the pulses were real )
This was very illuminating
From the first plot we can see when you stopped guiding, the RA started to drift down at a slow rate.
Something weird happened to DEC part way though that drifting time, no idea there.
From the reconstituted plot, you can see it begins with what "appears" to be the trace of a raw worm drive with drift
The unguided section then reverts to a flat line of the same drift rate, then back to a sinusoid with drift????
ie once more, it looks like when you were guiding, the encoder wasnt keeping anything under control???
but the guiding itself was???
Unguided, you had drift but the encoder was removing the PE
( The FFT of the guided sections once more shows a 42x fundamental, but it is small compared to the rest of the data. )
Just added a third plot where i cut yr log up ( a bit )
The third plot shows the raw RA from the first section
then the unguided section, but with drift removed.
I cant see anything unusual as the guiding stops, as if there is something there, its hidden in the seeing
or occurs between frames.
Andrew Johansen Melbourne Australia
Edited by OzAndrewJ, 31 July 2019 - 08:59 PM.