Because I'm usually travelling to observe, I have no choice but to cap and pack everything to return home. All I do is wipe the major dew/ice(!) off the scope, boxes etc - but don't touch lenses, mirrors etc.
Next morning, I get everything opened up to the air - all caps off etc. Scopes in the cold garage, the rest in the warm house. Usually stay open for half or a whole day before I inspect then cap and pack everything away again.
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