StarField Bahtinov Mask - 140 mm - FM-140 61 mm Refractors 8 oz (590 g) Environmental

8 oz (590 g) Environmental Protection: Waterproof Nitrogen Filled: Yes Tripod Adaptable: Yes Carrying Case: Padded woven nylon Camera Adaptable: Yes Dimensions: 208 mm x 127 mm x 68 mm (8

A molded foam insert cradles the Celestron Binoculars perfectly

a solid altazimuth mount with a unique asymmetrical design

William Optics Product Number: D-DIG2D-C-DB

StarField Bahtinov Mask - 140 mm - FM-140 61 mm Refractors 8 oz (590 g) EnvironmentalThis StarField Bahtinov Mask is sized for 125 mm 130 mm telescopes and fits dew shields with an outside diameter of 153 mm to 192 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