Collimation Sight Tubes
For all Newtonian Type Telescopes
( Primary mirror in the bottom with a Secondary mirror and Eyepiece at the top )
These handy devices are an essential part of keeping your telescope properly aligned to give you the best possible images.
Available in 1 1/4" and 2" Diameters
Each one comes with Detailed Instructions on how to align your telescope for best results.
1 1/4" --- $ 10.00
2" --- $ 20.00
Note: These devises do not work with Schmidt-Cassegrain or Maksutov-Cassegrain type telescopes. The primary mirror must be whole in the center.