Alstar 1.25" 20mm Plossl Telescope Eyepiece - 4-Element Plossl Design - Threaded for Standard 1.25inch Astronomy Filters music_UK_update_2021 Cup Diameter: 15

Cup Diameter: 15

Only apply cork grease when the mouthpiece is hard to install

2 reels of 16

The ring enables camera viewfinder focus confirmation light and confirmation sound

ABS engineering plastic with metal 5/8" screw 5

Alstar 1.25" 20mm Plossl Telescope Eyepiece - 4-Element Plossl Design - Threaded for Standard 1.25inch Astronomy Filters music_UK_update_2021 Cup Diameter: 15Alstar 1. 25" 20mm Plossl Telescope Eyepiece 4 Element Plossl Design Threaded for Standard 1. 25inch Astronomy Filters This is a very nice medium power eyepiece set. 1. 25 inch 20mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. 4 element plossl design, has a approx 52 degree AFOV. Perfect for broad field lunar observations, medium sized star clusters, and a wide range of cloudy nebulas and deep