Vixen SD81SII Super ED Refractor Telescope

Vixen SD81SII Super ED Refractor TelescopeDescription Vixen's standard "photo visual" SD apochromatic refractor with a handy focal length of 625mm. Vixen SD apochromatic refractors feature "Super extra low Dispersion" optical glass in its objective lens. The SD81SII has a ring spacer around the objective lens to make the diffraction pattern of stars visible equally for more refined star images in astrophotography. With the use of an SD reducer HD kit or SD Flattener HD kit, the image circle

The binoculars have optical Bk-7 glass material which creates a clear and bright image

Controls Belt-Driven Stepper motors with computerized GoTo features using the OpenGOTO ExploreStars for Apple iOS/iPadOS or Android Tablet

The LE-eyepieces are especially well suited for spectacle wearers

The focusing system has a lifting capacity of 17 pounds

5mm Field Stop Diameter 34

All required accessories are included

USB eyepiece connects the device directly to a computer to allow for easy viewing

Due to the strong vibration canceller effect

Length 76mm

Three objective lenses mounted on a rotating turret provide magnifications of 100x

theater or concerts - you will quickly appreciate the advantages of this compact telescope

hardly a test for these optics