Quote:
Originally Posted by brian nordstrom
 against physics , my Tak sky90 f5.5 and SW 102 f5 , both 500mm f/l's , the Tak shows more on luna, planetary and deep space than the sky watcher? .
Don't give me the "Coatings" thingy , ok , the SW coatings are new generation |
Brian , the Tak Sky90 is a Flourite Doublet and the SW 102mm F5 is just an achromat ... I would call that a significant `physical' advantage
