Sky-Watcher Field Flattener for EvoGuide 50 - S20214 Admin - Sales Statement - Free Shipping this 40 mm focal length

this 40 mm focal length eyepiece offer incredible value in an unusually nice eyepiece

and is treated with three layers of water-based lacquer

Its optics are fully multi-coated

Optical Coatings: StarBright XLT

Sky-Watcher Field Flattener for EvoGuide 50 - S20214 Admin - Sales Statement - Free Shipping this 40 mm focal lengthSky Watcher Field Flattener for EvoGuide 50 Sky Watcher Field Flattener Use for EvoGuide 50 (50ED and 50DX) 28 mm image circle 17. 5 mm back focus This Field Flattener for the EvoGuide 50 from Sky Watcher will correct for field curvature to provide a nice flat field for astro imaging. It works with the Sky Watcher EvoGuide 50ED and the 50DX Guide Scope Astrographs. It provides a 28 mm image circle and has a 17. 5 mm back focus. The Sky Watcher Field