AZ800 user manual - hardware
Created by: MPuchner 07.2019
version: 9600021A
Original user manual
page 63 of 68
printed: 04.03.2020
12.7
Collimating the primary mirror
The primary mirror can only be collimated on a star optimally.
So perform this step after you are familiar with the basic functionalities of the telescope, such
as moving the telescope with the motors, focusing, … described in the software manual.
Centre a star with moderate brightness and defocus it until you see the star as a ring.
It is recommended to choose a star 45° above horizon or higher to make sure that the primary
mirror always settles down immediately in the mirror cell during the collimation process.
Use live view or continuous exposures (focus mode) in your camera software to view to star.
Figure 61 - star before and after collimation
You can see the obscuration, caused by the secondary mirror, is not in the centre of the star. After collimation
the obscuration should be centred, as you can see on the right picture.
