Officina Stellare RiFast 300 Astrograph

The RiFast range is the next generation of ultra versatile and high quality Astrographs from Officina Stellare.

Devoted to astrophotograpy, the RiFast family has an unique optical scheme, proprietary to Officina Stellare, another creation of their master optician, Massimo Riccardi. The three-lens field flattener is the real masterpiece of this telescope. The primary mirror is aspherical and the secondary mirror is spherical. A precise design choice to make collimation easier.

The RiFAST300 is a new revolutionary astrograph for avid astrophotographers.

The 3 element flattener is placed near focus position, to avoid any chromatic aberration.

Compared to itís processor, the new 2018 version has a closed carbon tube, a simpler mechanic, has lost 6Kgs from the previous truss version, and incorporates a new tip tilt system with a mechanical zero position.

The scope is a native f/3.8 with a flat field up to 60mm. Interestingly the scope has the flexibility to use a dedicated 0.78x reducer (XTFR078) and 1.5x extender (XTFE15-300). So the instrument can be used from f/3 through f/5.7 with a corrected field of 42mm with both accessories. The RiFast 300 is three instruments in one and caters for just about all deep sky imaging requirements.

Technical Specs:

Focal length Corrected Field MBFL

RiFAST 300 without any optical accessories F3.8 1.140 mm 60 mm 125 mm

RiFAST 300 with optional 0.78x reducer

F3 889 mm 42 mm 68.5 mm

RiFAST 300 with optional 1.5x extender

F5.7 1710 mm 42 mm 170.1 mm

ENTRY PUPIL DIAMETER:
300 mm
FOCAL RATIO:
F/3.8
FOCAL LENGTH:
1140 mm
LINEAR OBSTRUCTION:
57%
FULLY CORRECTED AND ILLUMINATED FIELD:
60 mm
WEIGHT:
20 Kg
BACK FOCUS EXTRACTION:
125 mm