Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)

Use the Sky-Watcher Evostar ED APO 150mm f/8 Guidescope to improve the precision of your autoguiding system, for wide-field astrophotography, or as an exceptional platform for observation sessions.

The large 150mm aperture is complemented by an extra low-dispersion (ED) element set in a doublet apochromatic lens design. These two optical features make the Evostar much more precise than standard refractors and guidecopes, producing crisp and clear high-resolution views with limited edge distortion and accurate color representation. To achieve the sharpest focus possible, Sky-Watcher utilizes a Crayford-style focuser. Unlike a conventional rack-and-pinion system, the focuser utilizes a toothless friction mechanism that smoothly moves the drawtube without the backlash that rack-and-pinion focusers suffer from. The focuser has a large 2" drawtube to accommodate full-frame imaging sensors without vignetting.

A mounting cradle-ring assembly clamps over the optical tube assembly (OTA) and lets the user adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and to help with balancing, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any mount head with a Vixen-style saddle. Protecting the optical tube and accessories during transport and storage, a hard aluminum carrying case is provided.