Quote:
Originally Posted by Stefan Buda
I used a hairdryer too, a long long time ago when I started planetary imaging with a 180 Maksutov. Not a good idea to heat your optics when you try to image at the theoretical limit of your scope, but if you get dewed up there is no other option.
Your link is a good place to start for beginners, however, I would not recommend planetary imaging with scopes below 250mm aperture.
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Larger scopes are certainly better, but it's definitely possible to get nice images of the planets with smaller scopes. Here are some images I've taken with my 6" SCT.
My C9.25" (with "only" 235mm aperture) is certainly capable of taking great images of the planets (they are the ones in the FAQ) in good seeing.