Explore Scientific 52 degrees 40mm Eyepiece 2" Torch Eyecup: Removable Flip-Down Style Soft

Eyecup: Removable Flip-Down Style Soft Silicone Rubber

5° (the edge of the field of view is the 6° boundary)

and each ring has three adjustment points

while the scope side has female M48 threads

The ingenious combination of simple yet effective mechanisms with big-aperture Newtonian optics gives the Dobsonian Telescope worldwide popularity

Explore Scientific 52 degrees 40mm Eyepiece 2" Torch Eyecup: Removable Flip-Down Style SoftThe longest focal length in the 52 Series with the longest eye relief, the 40mm is also the only 2. 0 inch O. D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62 Series, and the 40mm 68 Series. At this focal length, this eyepiece is generally reserved for deep sky observers who challenge themselves to observe near the faintest observable limit of their telescopes. The huge true