SCT collimation link

[kirkster501]

Guys, someone posted a link where you could look at the mirror through the corrector in the daytime and get a rough idea of the collimation by looking at the circles in the mirror..... Anyone post me that link please? Cannot find for the life of me....

Steve

[barkis]

Is this the one?

Ron.

http://www.asterism.org/tutorials/tut14-1.htm

[Grunthos]

This?