Staff Assigned: Tim STX Guider - shutter delay/sticks in cold weather

Discussion in 'STX and STXL Series Cameras' started by Mark Marfoglia, Jan 7, 2020.

  1. Mark Marfoglia

    Mark Marfoglia Cyanogen Customer

    Oct 19, 2014
    Montreal, Quebec, Canada
    I have 2 STX Guiders, one in New Mexico and one in Canada, great devices. Recently I interchanged the 2 along with the cameras, and the one I installed in Canada gives me problems when temperatures dip below -15C. I know that they can operate well below this as before the switch I had no problems down to -30C.

    The problem has been going on for 3 months or so. I suspected that it was only when it got very cold, but now I am sure. My sessions start off well but as the temperature drops the guide image intensity starts to vary. The star appears and disappears from frame to frame. I changed out the HDMI cable, no affect. The main camera is working fine. I started increasing the exposure time and it helped but the as the temperature drops more that failed too.

    Then I noticed that certain stars, not all were affected separately, leading me to think that the shutter was blocking part of the frame. Then I noticed that when the stars were bright there was a solid clicking of the shutter, and when the clicking was softer or even hard to hear, and delayed, the stars were gone.

    I think the shutter gets weak as the temperature drops. I have attached 3 pics that illustrate the problem.

    It is connected to an STXL 11002 that is only +-8 months old (they were purchased together). Running Maxim 6.20 on windows 10Pro, all drivers and firmware are up to date. Thx for your help.

    Attached Files:

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