Quote:
Originally Posted by multiweb
I have it working fine in Neb2 and Maxim DL 5.x as an Ascom camera. I was shooting some darks and playing with the TEC on the bench last night. Temp control is new to me so I'm experimenting. When you set the cooling point in Maxim to let's say -10c it goes down to -20c or less. It also fluctuates a lot +/-7c. Is this normal? I thought the regulation would have been within +/- 1c ? Or does it need time to settle down?
I used Gain 1 Offset 60 and apart for hot pixels 10min darks were ink black. No noise. I couldn't even stretch the data. So I think something's not right. The camera is working because if I do a 1s exp without the cap on I get saturated white. I just thought it was odd to have hardly any signal on a 10min dark. Maybe gain1 is too low. What do you use?
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Hi Marc
The offset and gain settings will be specific for your camera. I have just reset my gain and offset as a took a new darks library. My settings are Gain = 15, offset = 115. This gives me a dynamic range of 500 - 65450 ADU.
I only use Maxim (via ascom driver) and set the temp at -20. The camera will overshoot (~ -22 to 23) then fall back below the set temp then gently creep up to a stable temp of -20. Once there it never moves, just stays rock solid, only the current draw moves (usually down as the night progresses). I never bother going below -20 as it makes bugger all difference to noise even though the camera can easily reach -30 and beyond. Just stresses the peltier and you will shorten its working life plus I can use -20 all year round both summer and winter. Also Marc why do you have two exact same temp readings in those images you posted from Maxim? There is no guider attached so there should be "no camera" in the second box. Not sure why its there..
Cheers
Mark