What size barlow for Xbox live camera

[symbiosis]

Hi All

Just bought a few Xbox live cam's to mod for photography trials - I need to get some decent barlow(s) though as my current one's are rubbish. What size barlow do people recomend to get some decent moon and planet shots with this cam?

Thanks

[Cornelius Varley]

It will depends on your telescope. For most planetary / lunar imaging you need a barlow that gives you a f number of about f20.

Peter