Astromania 2" Field flattener - Provides Perfect Image Flatness for Your Astronomy Photos

• Field flattener for refractors, suitable for telescopes from f4 to f8.
• M48 thread for complete aperture illumination at 2", room for accessories between - 109mm of back focus.
• Field curvature is a common optical defect that is not noticeable with visual observing or photography using small chips.
• Conjure astronomy photos with pin-sharp stars right out to the outer edge of the image field.
• Excellent multi-coating on lenses.

• Item Reference: B01HXIQGP4 6970019295299