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Old 07-11-2020, 11:13 AM
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mldee (Mike)
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Join Date: Aug 2008
Location: Near Warwick, Qld, Australia
Posts: 648
Off Grid obs vs House

Hi Alex,
Totally agree with your comments regarding off gridding for a house, avoid 12V like the plague and if you can afford a grid connection, go for it.
For a simple Obs, 240V is OK too, BUT, most everything in an obs wants to see 12V anyway:
Mount - 12V
Camera(s) 12V
Dew heaters 12V
Focussers 12V.
Couple of lights 12V or even dry battery.
NUC 12V

The days of battery water checking etc have long gone and I have never cleaned any of my panels. All still going strong.
My main concern in my obs was KISS wiring and keep the cost down. A conglomeration of power blocks is a PITA. If you already have acquired sufficient batteries, why not use them? You can even run your extension cord out to a battery charger to ensure they're ready for a night's imaging.
YMMV
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