Quote:
Originally Posted by hoxygt
How would it compare to the 5" dobbie? My limited understanding is that aperture to tube length is 'pushing things a bit' in terms of light collection to magnification ratio?
|
The 90mm model at Ozscopes is on an EQ2 mount. They are a pain for grab and go. Alt/Az would be quicker to setup.
http://www.myastroshop.com.au/produc...sp?id=MAS-042E
Both the 130mm and 90mm are good scopes. At f5 the 130mm will give lower power but brighter views making it better for wide field deep sky. The 90mm at f10 would probably have the edge with planets, though the eyepieces it's supplied with are horrible.
Refractors never need collimating but they have some chromatic aberration. It's all a trade somewhere.