[Darth Wader (Wade)]

Hi all,

I've got a Skywatcher 70x900 refractor and I'm slowly upgrading a few bits and pieces as time/money permits. I've got my sights set on a new diagonal but I'm not sure what I should be looking at exactly. Should I get a prism diagonal for "correct" images or just get a semi-decent mirror diagonal? I mostly use my scope for planetary & Lunar viewing, with a view to upgrade to an 8" dob in the next 12-24 months.

Cheers
Wade