Land Sea & Sky
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A non-focal reducing Field Flattener which gives improved results for photography with triplet and doublet refractor telescopes of between F5.5 and approximately F6.25 focal ratio.
Provides FSQ-106EDX4 like field flatness on the FSQ-85EDX
This field flattener is designed to work with the Altair Astro 80mm F6 Super ED Triplet APO, and has an M48 rear thread adapter for connecting your DSLR or CCD camera.
TAKAHASHI FOA-60 Extender 1.7XR
TAKAHASHI TOA-35 REDUCER for TOA-130
The Lightwave 0.6x focal reducer gives an 0.6x reduction in F-Ratio for faster exposure times, as well as a correspondingly wider field for astro-photography. Designed primarily for refractor telescopes of F6 or longer focal ratios.
The ADC corrects for atmospheric dispersion (rainbow effect) producing sharper images of object closer to the horizon.
The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 9.25" one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object
TAKAHASHI FC-35 REDUCER
TAKAHASHI 645 0.72X REDUCER QE
TAKAHASHI EXTENDER-ED 1.5X
This field flattener/reducer screws directly into the rear focuser rotator of your refractor, converting it into an astrograph with a flatter photographic field than the existing lens system alone.