Astromania Astromania 1.25" 90-Degree Erecting Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp

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 Simply insert the erecting prism into the 1.25 inch focuser and enjoy upright and right angled images with eyepieces for watching birds and deer at the edge of forest and summit cross on a mountain or a cruise ship far out on the sea The prism housing is made of ABS plastic and barrels are made of metal which ensures a tight fit and long grip; Use a clamping aluminum screw to fix eyepiece; so look sideways through telescope and eyepiece will safely stay put and not fall out