8″ f/4 Newtonian reflector
Duration : 0:0:39
Read the rest of this entry »
Technorati Tags: alignment, collimation, mt, newtonian, optics, reflector, startest, Telescope, 校準, 牛頓鏡
Contact Us | Terms of Use | Trademarks | Privacy StatementCopyright © 2009 Telescopes. All Rights Reserved.
Powered by WordPress
8″ f/4 Newtonian reflector