Really depends on what you want to see, you might be able to make out the ice caps but I wouldn't count on seeing much else in terms of terrain details. Give it a go if that's all you have, you won't get a better chance at it for another 15 years.
Whats your focal length? You would probably want about f20, any more than that and it will be too dim. I might give it a go with my 4" tonight if I'm not too tired.
Whats your focal length? You would probably want about f20, any more than that and it will be too dim. I might give it a go with my 4" tonight if I'm not too tired.
I can't give you first hand what 4" would achieve but I often use a 5" f7.5 refractor with an 3X barlow and get reasonable images from it. See my recent images posted in the Beginners Forum to give some idea of what small scopes can do.