I had one of the early C65 chinese maks. The first unit was so awfully decollimated you could see by eye the parts were glued out of place and pointing in different directions. The second was collimated but had about 1/2 wave of astig.
I just looked at a C70 mak. A little better, about 1/4 wave of spherical abberation from the all spherical design (you didn't think you were gonna get a hand figured Questar did you). Some roof prism error contributes to a mushy focus, the opposite of snap. The obstruction is only about 1/3, so this had potential.
Back to real telescopes....
I just looked at a C70 mak. A little better, about 1/4 wave of spherical abberation from the all spherical design (you didn't think you were gonna get a hand figured Questar did you). Some roof prism error contributes to a mushy focus, the opposite of snap. The obstruction is only about 1/3, so this had potential.
Back to real telescopes....
"--Granted, that's a worse case scenario. The destruction might in fact be ... limited to our own galaxy."
