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Re: ATM Mars


The 6" says that you will be able to get about a max magnification of about
300x and the F/5 (30" focal length) says that you will need a 0.1" (2.5mm)
EP to do that.  With an EP of that short a FL, you aren't going to be
getting the best views and the short FL of the scope is the problem.  I'll
suspect that you can barely see the polar caps as a whitening of the top and
bottom of Mars with such a setup.
Your problem isn't aperture so much as the short focal length of the scope.
6" is quite adequate to see some of the detail but the detail won't come out
until you have a decent focal length to be able to use a decent sized
eyepiece to see the planet.
Bob May
http://nav.to/bobmay
bobmay@nethere.com
NEW! http://bobmay.astronomy.net