StarField Bahtinov Mask - 120 mm - FM-120 2" Barlow The Version-P (photographic

The Version-P (photographic

the process of producing

Erect image optics - Ideal for terrestrial and astronomical use

part Equatorial

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StarField Bahtinov Mask - 120 mm - FM-120 2" Barlow The Version-P (photographicThis 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