Alstar 1.25" 66 Degree 6mm Telescope Eyepiece - Bundle with - 1.25" O-III Filter

This high quality eyepiece features a 5-element design that offers superior sharpness. All air to glass surfaces have a multi-layer coating (so these are fully multi-coated, even though the barrel imprint may say "multi coated") for maximum light transmission. The long eye relief allows for a comfortable viewing distance. All lens edges are blackened for superior contrast. The insert tube is smooth-sided and is threaded for standard 1.25" astronomy filters. Ultra wide lens eyepieces offer a generous 66- degree apparent field of view, allowing more sky to be viewed at one time. They provide sharp image right across the field. The rubber eyecups are included for viewing comfort and to keep out extraneous light.

• Wide Field of View: This Gold Line Eyepiece has an extra wide field of view of 66 degrees; Particularly useful for locating objects; viewing star fields; and observing larger deep-sky targets such as nebulae and star clusters
• 6mm Focal Length: The 6 mm telescope eyepieces offer a wide field of view and excellent performance; High magnification shows complex features such as lunar surface details; Jupiter's nebulae or Saturn's rings in great detail
• Multi-Layer Coated Lenses: 5-lenses designed with anti-reflective coating; which greatly reduces reflection and glare on the glass surface; improves light transmission and enhances the contrast and color fidelity of the observed image
• Each Alstar 1.25 inch O III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O III emission lines
• Not only useful at light polluted sites; the contrast is also increased at dark sky sites; can be used with all 1.25 inch eyepieces; Filter made from high grade glass with dichroic interference and antireflection coatings