[LewisM]

Confused - in PHD2 New Profile Wizard, if I set the guide camera as Sx Lodestar (ASCOM), it sets automatically the unbinned pixel size to 16.60 microns. If I tell it using the SX driver, it sets it to 8.3 microns - precisely half.

I let it run at 8.3 using the "OEM" SX driver last night and got a warning that the calibration had not moved enough steps in size and calibration may be unreliable. Didn't feel like fiddling again with it as I was wasting time so just went with MaxIM 6's guiding which is brilliant (not going back to PHD any time soon!!!).

But the question is, WHICH figure do I set for the pixel size? Both sizes were automatically generated, differing depending which driver I used. I had GREAT guiding in PHD2 previously (prior to setting it to arc sec on the request of Suavi lol), now it's telling me unreliable calibration.

So, WHICH SIZE should I use? By memory, the lodestar is 8.2x8.4. I used to use 8.6.