StarField Bahtinov Mask - 100 mm - FM-100 Cases Product is intended to support

Product is intended to support and attach various iOptron Mounts

The rings can be removed from the scope for use with a DSLR for handheld shooting or when the camera is tripod-mounted

Allows you to attach your camera

and permanently programmable periodic error correction (PPEC)

The DeLite series is a delightful addition to Tele Vue's visionary line of eyepiece developments

StarField Bahtinov Mask - 100 mm - FM-100 Cases Product is intended to supportThis StarField Bahtinov Mask is sized for 90 mm 105 mm telescopes and fits dew shields with an outside diameter of 109 145 mm. While basic, often home made focus masks have been used for quite some time, the Bahtinov mask, with it's distinctive pattern, is unique. Invented by Russian amateur astronomer Pavel Bahtinov, this mask has quickly become the astro imager's choice for fine focusing a telescope. To use, place the Bahtinov mask in front of the