Posted by: Bubo Observatory
A laser collimator is a great tool if you know how to use it, but be aware they have 2 big drawbacks:
1. They have to be collimated themselves, and many aren’t upon delivery.
2. They do not adjust your secondary; in fact, if your secondary is not properly aligned, they can lead you far astray and make your collimation significantly worse.
https://www.skyatnightmagazine.com/top-astronomy-kit/best-laser-collimator-telescope/?fbclid=IwAR3au4CUjwNOOk090V83zGfX8fo-a_Pj8boKMmSJ8mo-kJxEOIW5L0HW0MM