This is a guide to Collimating Newtonian Telescopes in the daytime using a collimation cap, a Cheshire eyepiece and a laser collimator (I also run through collimating the laser collimator!). I personally use a collimation cap followed by a collimated laser collimator for my daytime collimation. This basic tutorial is all you need to get great collimation of your newtonian or dobsonian telescope. In my follow up tutorial I run though more advanced topics such as how to check if your telescope is mechanically sound as well as running through night time collimation using the stars.
For £3 you can become a patron and access the full 40 minute advanced tutorial here:   / 85519443  

Recommended Laser Collimator:
UK: https://www.firstlightoptics.com/othe...
US: https://bit.ly/3CY6Fnb
EU: https://www.astroshop.eu/laser-pointe...

00:00 Start
01:52 Collimation theory
04:20 How to adjust the secondary mirror
07:23 How to use a collimation cap
09:25 How to collimate with a Cheshire eyepiece
12:55 How to collimate a laser collimator
15:00 Quick collimation with a laser collimator

the advanced collimation video for Patrons features these additional
How to check if your focuser is pointing straight
Why does the secondary mirror need to be offset?
How to check the secondary mirror is in the correct position
How to check if the weight of your camera is causing your telescope to flex
30:49 Star collimation