The Parabolic Newtonian reflectors telescopes 1High quality parabolic primary mirror 2.high contrast and sharpness of image

Bresser/Explor Scientific 

Parabolic Newtonian Reflectors Telescopes:

Parabolic Newtonian Reflectors Series
Specs	Aperture	Focal Length	Focal Ratio
PN254x1150	254mm(10")	1150mm	f/4.5
PN203x900	203mm(8")	900mm	f/4.5
PN152x750	152mm(6")	750mm	f/5
PN152x675	152mm(6")	675mm	f/4.5
PN130x650	130mm(5.12")	650mm	f/5