Observation notes (with equipment details), photos, sketches, reviews, software tips, random thoughts, by an amateur astronomer.
Sunday, January 15, 2012
no perfect battery
Nicole and I discussed portable batteries for astronomy use. I said there was no perfect battery. And pointed out that even a Celestron unit is a compromise.
The perfect astronomer's battery would be a deep discharge marine style with lots of amp-hours but without white lights, radio, and air pump.
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