I'm going to bring the scope out tonight again and the weather looks a lot better.  Hopefully will get some images that are worth posting (not just a single white dot on a black frame like the other night.  :)

The binning is defnitely worth adding.  Due to the way the interleaving of the lines work, in 1x1 mode you get every other line looking brighter than the others.  Also, the camera would work well as a guide camera since it has the st4 port and is quite sensitive, and in a field with faint stars the binning really ups the SNR (also cuts the 2 second readout to 0.5 seconds which makes the response time a lot better in guiding applications.  If its not too much trouble to add I would really appreciate you taking the time to do it.  I am not completely sure how to go about implementing it.  I know its not terribly hard, but it would take me a lot of time to figure it all out.

Subframing would also be nice for the guiding reasons mentioned above.  If you stick in 1x1 binning mode, reading just the portion of the frame where your guide stars are really helps the readout speed.

I'll try to keep an eye on the fan tonight and see how it operates in a real setting with the cooler actually running in a real environment.  I expect you are right about the cooling being micromanaged by the onboard uc, however I did notice that odd fan behaviour the other day and that is what made me doubt this a bit.  I don't seem to remember it running that way in orion camera studio.

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