Home > Astronomical Telescopes > Officina Stellare > RiFAST Series
Model: RIFA400Brand: Officina Stellare
Special order, delayed despatch
Diffraction-limited over a wide and flat field, the RiFast design will push any camera to its limits... and will do it FAST! The extraordinary f/ ratio allows a higher productivity per night, a significant factor for surveys, SN search, asteroid control, and many other fields of modern astronomy.
The central obstruction is about 50%, but still smaller than similar designs, that simply can't compete under any point of view. The visual contrast is very good, thanks also to the special ultra-dark paints we use.
The corrector group is very close to the focal plane, so chromatic aberration is undetectable.
ENTRY PUPIL DIAMETER:400 mm (16'')FOCAL RATIO:F/3.8FOCAL LENGTH:1520 mm (60'')LINEAR OBSTRUCTION:55%FULLY CORRECTED AND ILLUMINATED FIELD:70 mmWEIGHT:40 KgBACK FOCUS EXTRACTION:about 240 mm (9.5'')
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