Quote:
Originally Posted by AstralTraveller
Years ago when I did a lot of public outreach I had a 10" with a full thickness mirror. Often a planet would be the only suitable object and sometimes they were too low ... but the punters wanted to see it so I tried. Several times I've seen a double image of Jupiter, two blobs side by side. Half an hour later things were better (not perfect but tolerable). Tube currents can be that big a problem! If you plan to observe late in the night consider having the scope outside hours early, with the cap off, so that it is cool by the time you want to use it.
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Might be tricky keeping the cap off.
If aimed too high you can get dew inside the tube.
Aimed too low, and cats love to go exploring.
Cheers,
Renato