[Jason D (Jason)]

Originally Posted by CJ

Hi Ben. For some immediate help, this video might be useful. It's a bit long winded in places but it is quite thorough.

https://www.youtube.com/watch?v=n97dn-nGGlo

Cheers

That part of the video when he placed the secondary mirror on the paper to trace it was scary along with the part when he inserted the plastic ties through the focuser next to his secondary mirror. These steps can scratch the secondary mirror and are unnecessary. The old fashioned method of using a sight-tube to center the secondary mirror under the focuser will do just fine and will avoid potential damage to the secondary mirror.

Jason