StarField Bahtinov Mask - 160 mm - FM-160 vendor-starfield-optics the Celestron NexStar Evolution includes

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

Telrad Dew Shield

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

Celestron Nature DX 12 X 50 Binoculars - Black

then the Celestron AstroMaster 130EQ Reflector Telescope is for you

StarField Bahtinov Mask - 160 mm - FM-160 vendor-starfield-optics the Celestron NexStar Evolution includesThis 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