STXL16200 Power Supply

Discussion in 'STX and STXL' started by Mike Hambrick, Nov 20, 2019.

  1. Mike Hambrick

    Mike Hambrick Cyanogen Customer

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    I don't see a 12V DC power cable listed on the web site for the STXL16200. Do you offer this option ? Mine is the camera plus filter wheel.
     
  2. Colin Haig

    Colin Haig Staff Member

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  3. Mike Hambrick

    Mike Hambrick Cyanogen Customer

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    Hi Colin. I am starting to investigate the feasibility of setting up my imaging system at remote locations where all of my power has to come from 12V car batteries. This would mean that I would need a cable that would come from a 12V car battery or Rig-Runner to the camera. My power requirements are pretty typical of what a lot of people have: Mount, Cameras (STXL16200 + STi), Dew Removers, Laptop, Electronic Focuser, and Icron Ranger ( extra USB ports for mouse and focuser).

    I should also ask that if running the camera off of a 12V battery do you recommend having a separate source of power for the camera, or at a minimum keeping it separated from the dew removers ? Astro-Physics recommends having a dedicated 12V DC power source for their mounts. If you have a similar recommendation for the camera, I can easily imagine that a system such as mine might need to be run off of three separate 12V DC power sources.
     
  4. Doug

    Doug Staff Member

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    Some dew removers make an incredible amount of electrical hash (they use PWM to adjust the heat level). I'd at the very least check and if you have problems use a separate supply.

    There's another reason to use a separate battery: capacity. The STXL takes 8.5 amp at full cooler power. I had a quick look and the largest deep cycle marine battery I found has a capacity of 92 Amp-hours (Ah). That will last about 10 hours at full cooler power, running just the camera.

    We currently do not have a 12V cable on offer. You could make your own by chopping the end off an extension cable.
     
  5. Colin Haig

    Colin Haig Staff Member

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    Doug - I run FIVE 100Ah AGM deep cycle marine batteries (very similar to solar batteries). What I've learned over the years with them is you have to derate them 50%, or else they don't last. The Ah rating is usually based on a 20hour discharge time, or the battery won't recover. So basically you would have 5 hours runtime on one.

    Mike, my home observatory setup uses rig-runners extensively. The biggest issue is wire gauge. I use 12AWG for stuff, or the voltage drop due to wiring loss is too high.
     

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