Hi Tom,
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I looked at your guide log with PEMPro Log Viewer and I see this log has multiple runs one after the other. So I am not sure which you consider having the problem and which are good. Attached is a screen shot of the very last one. Here we can see you have the typical 240s worm error which is not terrible (Y-axis in Arc-Sec). But you also have some 120s error, which is multiple of 240, and 32 secs which is the gear box. But all these values are changing from run to run suggesting you made mechanical changes between them. If you download this app from Ray Gralak's website, you can also open the log file and scroll through the runs. You may need to convert it to a Notepad text file first to open.?
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When we see these errors, we can sometimes correct them very well by creating a PEC curve using PEMPro (free for 60 days, not like the always free Log Viewer) and upload to the Gemini 2 unit. The upload curve should mostly correct for the common periodic errors and let your guide program correct for the seeing effects. In PHD2 we also use the PPEC corrective algorithm which can be used to correct for the largest magnitude error by setting the appropriate period in seconds. If you wish to proceed with PEMPro there is an instruction file on how to use with Losmandy mounts:
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I think these are the latest correct instructions. We still have no explanation why your mount changed from better to worse, so this may still involve some worm adjustments. There are a number of good videos on this subject on the Losmandy YouTube channel.
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John
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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user
