1.25 Inch 4Mm Eyepiece Plossl Fully Coated Eyepiece For Astronomical Telescope Monocular Ocular F9158

Specification:

1.Brand: -- 2.Focal Length: 4Mm 3.Fully Coating Group On Each Lens Surface To Maximize Light Transmission And Contrast 4.4-Element Plossl Design, Has A Approx 48 Degree Afov. 5.Full Metal, Soft Rubber Eyeguard 6.The Inside Of The Adapter Is Fully Threaded To Minimize Reflections 7.Structure Of The Optical System: Plossl Optical Design 8.Thread Pitch: M28.5*0.6 (For Standard 1.25 Inch Filters) 9.Weight: 63G /2.19Oz 10.Height: 45Mm /1.77Inch Apply: Watch The Scenery, Bright Celestial Observations, Nebula ANd So On