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Hotech 2 SCA Crosshair Laser Collimator - $80 (Las Vegas, NV)

Hotech 2 SCA Crosshair Laser Collimator 1 thumbnailHotech 2 SCA Crosshair Laser Collimator 2 thumbnailHotech 2 SCA Crosshair Laser Collimator 3 thumbnailHotech 2 SCA Crosshair Laser Collimator 4 thumbnailHotech 2 SCA Crosshair Laser Collimator 5 thumbnailHotech 2 SCA Crosshair Laser Collimator 6 thumbnailHotech 2 SCA Crosshair Laser Collimator 7 thumbnailHotech 2 SCA Crosshair Laser Collimator 8 thumbnail
I have several collimators and a telerad

Hotech 2" SCA Laser Cross Hair Collimator

The HoTech 2" SCA Laser Collimator works with 2" focusers. The HoTech laser collimator separates itself from all the other laser collimators with its innovative self-centering adapter technology (SCA). The mechanism allows precise and repeatable installation in all brands of 2" telescope focusers. All laser collimators in the current market have one fundamental problem: the slop in the adapting mechanism between the laser collimator and the telescope focuser. This problem is clearly recognized and often discussed among astronomers.

No matter how tight the tolerances are machined on the laser collimator or the focuser, a small gap is required to allow installation of the laser collimator. Once the laser collimator is inserted, the required gap becomes a problem. The laser collimator is fixed either with one or more thumbscrews or an unified compression ring. Both methods introduce a very critical issue, namely an off-axis installation that instantly destroys the precision of your collimation instrument along the entire optical axis.

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