With this 90 degree erecting prism transform telescope into telescope for nature observation with upright and left right corrected image; good for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes;
Comfortable observation with 90 degree: Look pleasantly from above into your eyepiece; filter thread for any 1.25 inch filter and accepts standard 1.25 inch eyepieces;
Made of genuine optically processed BK7 glass; premium optical prism inside rather than mirror which makes image clear and sharp; amici prism looks as beautiful as binoculars; but you can zoom in much higher with your eyepieces;
Designed primarily for planetary observation "Moon; Jupiter; Mars and Saturn and more" but great for deep sky objects too; comfortable eye relief averaging 16mm across the series; threaded for standard 1.25 inch astronomy filters
Wide 58 degree Field of View "FOV" in 2.5mm to 25mm focal lengths; 1.25inch fully multicoated eyepieces give maximum detail and definition across the entire 58 degree field of view; each eyepiece has 5 lens elements in 3 groups