Cosmic Challenge 20135 58 layers Reflectivity Over 99%

58 layers Reflectivity Over 99% Optical quality Diffraction limited Eyepiece holder 2″

The bottom of the phone can be as much as 160mm from the center of the camera on the phone

The new Celestron PowerTank Glow 5000 is an essential 2-in-1 accessory for any amateur astronomer

Length 240mm + 180mm

The compact Skywatcher Heritage 100P Tabletop Dobsonian Telescope is a lightweight and convenient grab-and-go scope

Cosmic Challenge 20135 58 layers Reflectivity Over 99%Written by Philip S Harrington, 478 pages, paperback Listing more than 500 sky targets, both near and far, in 187 challenges, this observing guide will test novice astronomers and advanced veterans alike. Its unique mix of Solar System and deep sky targets will have observers hunting for the Apollo lunar landing sites, searching for satellites orbiting the outermost planets, and exploring hundreds of star clusters, nebulae, distant galaxies, and