Quote:
Originally Posted by marki
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
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Thanks Mark. Yeah I'll sort out the gain/offset looking at my skycount once I have this TEC sorted out. My camera overshoots the target
by a lot (>10c) then oscillates a lot (+/-7c) but doesn't settle down. Even after one hour. I did three tests. One at -15c, one at -20c and one at -25c. At -25c it bounced between -16c and -31c continually. I posted all the graphs on QHYCCD and QiuHY said the DC201 is faulty
or the power supply is faulty. I replaced the power supply and tested again. Same erratic behaviour. Nothing like what you guys are experiencing.
re: Maxim DL I must have setup the second camera as a QHY as well from previous tests.