StarField Bahtinov Mask - 120 mm - FM-120 2" Barlow Erect image optics - Ideal

Erect image optics - Ideal for terrestrial and astronomical use

The Version-P (photographic

Canon EOS Kiss X2

but while the Head weighs only 30 lb

This eyepiece’s 4

StarField Bahtinov Mask - 120 mm - FM-120 2" Barlow Erect image optics - IdealThis StarField Bahtinov Mask is sized for 105 mm 125 mm telescopes and fits dew shields with an outside diameter of 120 mm to 152 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