Resolved Temperature setpoint

Discussion in 'STX and STXL' started by Michiel Ford, Nov 23, 2019.

  1. Michiel Ford

    Michiel Ford Cyanogen Customer

    Joined:
    Sep 12, 2015
    Messages:
    78
    Location:
    Holton, KS
    OK, I have the STX 16803 and want to know what would the optimal temp the camera should be. I know that the specs say it has a delta of 60 degrees, but some of these COLD nights in Kansas, should I just go to -40 or -35?? Some nights will be down below zero. I understand that there is a threshold for how low the chip should be and I don't want to ruin it!! My serial number is 18040001.

    Thanks for the advice!!

    Mike
     
  2. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    6,244
    The camera will limit you to -35C, since lower temperatures can start to cause minor problems such as light frosting (despite the extremely low chamber humidity).

    I normally run at -20C; that's about the optimum compromise IMHO. That's plenty cold enough to get the dark current down. Colder than that will increase residual bulk image, which can cause bright stars to leave a mark on the next frame - best to be avoided.

    I do sometimes run at -30C, but I only do that when the ambient temperature goes below -20C (which it does here on some winter nights). It does need to be colder than ambient to regulate effectively.
     
  3. Michiel Ford

    Michiel Ford Cyanogen Customer

    Joined:
    Sep 12, 2015
    Messages:
    78
    Location:
    Holton, KS
    OK, thank you!!

    Mike
     

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