[ausastronomer (John Bambury)]

Originally Posted by chrisp9au

G'day Richard,

in my 12" F5 dob, which isn't ideal for planetary viewing!

Cheers http://www.iceinspace.com.au/forum/....s/thumbsup.gif
Chris

Hi Chris,

Why do you say your 12" newt isn't ideal for planetary viewing. To be honest I can't think of a much better scope for lunar/planetary work than a tracking newtonian in the 10" to 15" aperture class. A hand tracked newt is almost as good. Any 1/2 decent newtonian of 8" aperture or larger will outperform any 5" APO. A 5" Achro isn't in the hunt against an 8" newt. A 10" or 12" newt will leave a 5" achro floundering on everything.

Cheers,
John B