Sky-Watcher 0.77x Reducer/Flattener for Esprit 150 - S20215 Correctors a significantly wider field than

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

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

The Celestron AstroMaster Series produce bright

105mm of back focus: Provides generous back focus to accommodate additional accessories and a wide variety of cameras

Antares Model No: SW17S3 Barrel Diameter: 1

Sky-Watcher 0.77x Reducer/Flattener for Esprit 150 - S20215 Correctors a significantly wider field thanSky 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