Collimating with a Focal Reducer

[supernova1965]

Hi all,

Question about collimating a scope that has a Focal reducer with it in the GSO collimator's laser beam is diffuse into a spotty oval. I first collimated it with the Focal reducer removed and it worked great but when I put the reducer back in after collimating the laser light was off center. But looking through the focuser it looked spot on still with my eye lined up with the center mark on the primary:question:

[gb_astro]

Hi Warren.

Why are you trying to collimate with the focal reducer in the scope?

gb.

[supernova1965]

I am still a NOOB with a lot of this stuff:D



The scope is one designed with it in and I didn't know if you collimate with the reducer out or in. I only just got the collimator and had no idea if I had done it right. I got first light tonight as the cloud went away:D and it was perfect so obviously you have to take it out when collimating.

[gb_astro]

Yes, leave it out during collimation.

gb.