Hi.

I am testing the cooling on my new ASI, and I'm wondering of what the lowest temp possible is.
From the ZWO site you have that the camera can be cooled 40 - 45 deg below ambient. This seams right as I (indoors) cooled it from ~22 deg to around -22.
The ZWO site says it has a operating temperature of -5 -> -45, but then it says the lowest temperature that can be set is -30

Does this mean that it can not get colder than -30 ? I tried setting the temp to -40 in indi control panel, and it did accept it but I'm not sure it will keep cooling below -30?

If the camera was installed and I would be imaging tonight the ambient temperature would be 0 deg, and thats a worm night for the season, so I will rarely have a issue in imaging around -40 if the camera allows it. Not sure if the -30 limit is in the ascom driver or in the on camera fw?

/Edit typo in the subject. Should be CMOS cooling, but I guess the cooling part is the same for both. Cooler is better.

I guess this is a good an answer as any.
Sat the asi outside in -1C and started cooling to -41





It's at least proof that neither the fw nor indi limits the asi 1600 to -30.
(The first image shows 18deg, but i did not let it cool to ambient outside before starting to cool)

I also have one other question. In the Ekos seduler there is a option in shutdown prosedure (warm ccd). What does it do, and do I need to use it?

Warm CCD turns off the cooler so the camera warms up gradually, i.e. you're no longer consuming power trying to cool it.