Sky Mentor 45º Image Erect Diagonal - 1.25" - 45IE-125 Baader Hyperions The Celestron Universal Plate attaches

The Celestron Universal Plate attaches to the mounting platform of your CGE equatorial mount

Built-in ST-4 autoguiding port

9 deg Eye relief (mm): 14 mm Interpupillary distance (mm): 74 mm - 54 mm Height (mm): 184 mm Max width (mm): 128 mm Min width (mm): 128 mm Weight (g): 735 grams (No battery) Twilight factor: 25

Built in Tripod Adapter and RSR Reflex Sight Ready Rail

Sky Mentor 45º Image Erect Diagonal - 1.25" - 45IE-125 Baader Hyperions The Celestron Universal Plate attachesSky Mentor 45 Erecting Diagonal 1. 25" An image erect diagonal is really nice to have if you want to use your telescope terrestrially as a spotting scope! Out of the box, most astronomical telescopes produce a mirror image. Astronomers do not bother to correct this image when looking at or photographing the sky, as doing so adds another bounce of light that lowers image brightness a bit. However, image brightness is normally not a concern during the