StarField Bahtinov Mask - 160 mm - FM-160 vendor-starfield-optics SKU: EPWP8265LE-01 Function: LER WP

SKU: EPWP8265LE-01 Function: LER WP Eyepiece Focal Length: 6

the Celestron NexStar Evolution includes its own built-in lithium-ion battery

Focal Length: 19mm

Center-balanced Equatorial Mount (CEM)

"You may know there'''s a long history of naming telescope eyepieces after their designers: Kellner

StarField Bahtinov Mask - 160 mm - FM-160 vendor-starfield-optics SKU: EPWP8265LE-01 Function: LER WPThis StarField Bahtinov Mask is sized for 140 mm 150 mm telescopes and fits dew shields with an outside diameter of 175 mm to 212 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