I have an odd problem in that my cameras do connect and everything seems to function as expected but I suspect that my PHD2 statistics are flawed. I image with a SBIG STT8300M CCD with the FW8G which has a remote guide head. As you know, to use these two cameras on the single USB connection requires the SGPApi Guider to be selected as the camera. This works fine. However, once PHD2 is guiding and reporting my guiding statistics I noticed the accuracy to be much better than in the past. Upon further inspection I noticed that the guiding camera pixel size is being reported as 1.0 micron where it is actually 7.4 microns. This would account for the good stats as a one pixel deflection would account for only one seventh of the actual movement.
The folks at PHD2 report that this number (pixel size) is called from ASCOM. I could find no ASCOM log for this date but I have provided a link to the other pertinent logs.
I did find that the PHD2_DebugLog contained both correct and incorrect “pixel size” entries but I cannot determine why.
Any insight you can provide would be helpful.
PHD2 2.6.6 Dev 1