In principle any good collimation tool can be used to collimate the ASA Astrograph. Our experience has shown, that the laser collimation tool from Howie Glatter in the US is one that works very easy and at the same time is very precise.
First you need to acquaint yourself with the adjustment screws situated on the secondary and main mirror.
In order to adjust the secondary mirror, a total of three screws are available (See image 1). Make sure, that you only loosen two screws at any given time. The screw in the middle can be adjusted carefully at the end of the collimation process, in case it got loose.
|Manufacturer||ASA - Astrosysteme Austria|