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Hi,
I let the star drift for about 5 minutes for each star, the meridian and the east.
But I used the guidescope for drift aligning, not the main OTA. I watched the North drift in phd, adjusted azimuth till it started drifting south, then adjusted back till there was no N/S drift. same with the East Star.
But I suspect, if the guidescope was not aligned with the OTA, I might have been a bit off.
Also, the guidescope is not that far off from the main ota, atleast visually looking at the two scopes, but I haven't really verified it. will do that.
James, just had a look at alignmaster, will give that a shot next time.
But how does the actual field rotation happen? i don't really understand the mechanics of it yet.
I'm going to open the IR filter on the qhy8 to measure height from each corner of the ccd to verify if the ccd is square in the camera. i've read that this can be a bit off because while collimating, we adjust with visual aids, but not really with the camera. will need that dessicant heater though.
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