Farpoint Adjustable Tri-Bahtinov Mask — 13" to 16" OTAs solar-filter The result is smooth and

The result is smooth and positive azimuth movement and much greater stability

The coiled cable normally plugs into a jack on the hand unit and a jack on the motor

Compatible with Newtonian and Refractor telescopes with 1

1/10 wave or better

Farpoint Adjustable Tri-Bahtinov Mask — 13" to 16" OTAs solar-filter The result is smooth andNot sure this is the right mask for your telescope? Use our Focus Mask Finder match your scope to the right Standard, Tri Bahtinov, or Hyperstar RASA mask. Adjustable Tri Bahtinov focus and collimation mask for OTAs from 13" to 16" front aperture. Sets onto the front of your telescope, gives you focus AND a collimation check from a single short exposure, and lifts off cleanly when you're done. The adjustable peg system fits any scope in this aperture