Description
Highlights
- Corrects for field curvature, allowing the EvoGuide 50ED and 50DX to be used for astrophotography
 - Thread on metal caps
 - T-thread connection or 1.25" opening for camera mounting
 - 28mm imaging circle
 - 17.5mm back focus
 - 5.33 x 3.57-degree field of view when used with APS-C crop sensor
 

