APM-Riccardi 0.75x M63 Reducer
Massimo Riccardi, famous optical designer from Italy, designed for APM-Telescopes a new 3-element 0.75 x Apo-ReducerAPM-Riccardi 0.75x M63 Reducer/Flattener Corrector for all TMB-APM-LZOS Apochromatic Telescopes. Tests show that it also works on Apos from other manufacturers as well. The reducer shortens the focal length by a quarter and produces a 40 mm fully corrected field – thereby converting your telescope into a fast astrograph!
The connection to your telescope and camera occurs over an M63 x 1 thread. For the correct adjustment of the reducer/flattener we can offer you an adjustment flange.
Usually the reducer is screwed onto the focuser. The reducer can also be installed inside the focuser barrel if the free aperture is equal to or larger than 68 mm.
The right back focus for your telescope you will find in the enclosed PDF chart (see below). The total optical path of reducer plus back focus plus focus change is between about 160 mm and 180 mm.
The correction is made for chips up to the full format and perfect for the best known Kodak KAF 8300 chips.
You can find the correct adapter for your telescope camera combination in the PDF graphic in the Manuals & Downloads tab.