17 Nov
2009
17 Nov
'09
10:40 a.m.
There are excellent, reasonably priced commercial dew prevention devices available to the consumer these days, for every telescope, eyepiece, and finder configuration. There are also low-tech workarounds that can be employed to at least minimize the problem, to a point. Dew/frost accumulation on optics should no longer be a concern to the amateur astronomer.