Description Kson’s put some love into these. Full metal housing, lovely easy to find anodized red. Features a 1.25″ long sight tube – for adjusting the secondary mirror tilt and rounding the secondary, and a Cheshire – a tool for adjusting the primary mirror tilt. As a short tube Cheshire eyepiece that is fitted with cross hairs is simply just too short to be called a sight-tube and has no practical value when aligning the focuser axis of a Newtonian reflector, we stock this superior, long version. Precision engineered, this device is all you need to collimate your reflector telescope.
