Comfortable observation with 90 degree: Look pleasantly from above into your eyepiece; filter thread for any 1.25inch filter and accepts standard 1.25inch eyepieces
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
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
Three high grade 1.25 inch Plossl Eyepieces 4 mm 10 mm 25 mm; 4 element design with a 50 degrees AFOV; a 2x 1.25 inch Barlow lens complements the included Plossl eyepieces to give you a total of six power combinations
This is a perfect accessory for owners of short and fast telescopes and especially helpful for boosting magnification during lunar or planetary observations; good visual experience of watching scenery; bright celestial observations; nebula and so on