Explore Scientific 2" Field Flattener for Explore Scientific ED APO Telescopes.
Most telescope designs involve an inevitable curvature to the focal plane, which causes edge-of-field aberrations. This is an insignificant worry for visual observers, but can be quite vexing for astrophotographers. The field flattener ensures that hours of preparation for the perfect shot will not be in vain.
This accessory offers fully multi-coated optics and slides securely into the 2” eyepiece holder.