SVBONY Red Laser Collimator for Newtonian Marca Telescope Alignment 1.25 inches 7 Bright Levels Triple Cemented Lens with 2 inches Adapter

The collimator doeas a good job on both my 6" f/5 and 10" f/5 newtonian reflector. Out of the box it was not perfectly adjusted, but with some help of onile-tutorials, the adjusting of the collimator is easily done within a few minutes. Honestly the 2 inch adapter is not perfect, because if you tighten the clamping screw, it causes the collimater slightly to tilt inside the adapter. The eyepiece adapter W2811C does a better job here. Anyhow, the collimator is perfect for quick and easy adjustment of our newtonian reflector. I personally prefer the "barlowed-laser-method" to get more precise adjustment. A simple 2x barlow lens, such as SV137 doeas a great job here.

Purchased this item in December 2018 from Amazon. Recently in June 2020 I needed to collimate and realized it was not working properly. After contacting Rita she arranged to have a replacement sent to me. This arrived today and it works perfectly. It is amazing that this company stood by their product even after a year. Highly recommend this Laser collimator and Even more the Customer service provided by them.