Quote:
Originally Posted by glend
When I had my 16" Dob, it's primary also managed to hang on longer than anything else, mainly due to the mass. Pre- heating it worked ok at home but out at the Dark Sites, with no power assist, there was no point struggling beyond midnight, when everyone else was counting meteors and drinking Port to ward off the chill. So yeah, you got to know when to say enough.
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I did wonder if a hand warmer thrown on the ground under the mirror might do the trick