Sky-Watcher 0.77x Reducer/Flattener for Esprit 150 - S20215 Correctors The 30 mm Ultima Edge

The 30 mm Ultima Edge eyepiece features fully multi-coated optics and a 9-element lens design

Including all the needed spacers and adapters are included for most common imaging configurations

a significantly wider field than that of most of it's rivals

Built-in 32-channel Global Positioning System (GPS)

Sky-Watcher 0.77x Reducer/Flattener for Esprit 150 - S20215 Correctors The 30 mm Ultima EdgeSky Watcher 0. 77x Reducer Flattener for Esprit 150 Sky Watcher 0. 77x Reducer Flattener Only for the Esprit 150 Focuser Compatible with both APS C and full frame sensors 36 mm fully illuminated field is available Also good to use for full frame cameras Provides a 90 mm back focus Or, 55 mm when back focus spacer and M48 ring installed Lowers f ratio from native f 7 (1050 mm) to f 5. 4 (810 mm) Reduces exposure time by 68% compared to native f 7 2. 54