The APM Riccardi 0.75x Reducer M63 is a high quality triplet ED reducer/flattener for apochromatic refractors. It is compatible with the Sky-Watcher Esprit 100, 120 and 150, along with many other apo refractors which have an M63 x 1 thread. It is also compatible with GSO Ritchey-Chretien telescopes from 10" and larger.
Designed by legendary optical designer Massimo Riccardi, this reducer provides a large corrected field and transforms your telescope into a true astrograph. By contrast, the Sky-Watcher reducers only cover a 34mm field, making them unsuitable for use with full-frame sensors.
The APM Riccardi Reducer features multi-coatings optimized for the spectral range of modern sensors. An optional tilter is available for precise adjustment of the field to optimize star shapes in the corners of the frame.
Note: For use with the Esprit 100, 120 or 150, the optional M74 to M63 adapter is required. For easy connection to common camera setups, an optional M63 to M48 adapter is also available.
