RiDK 700

RiDK 700

The results are simply amazing: a telescope that offers a wide, flat focal plane (more than 65 mm in diameter, even in the smallest model!). A wide focal plane that is diffraction limited over a wide spectral range.

Since the corrector group is close to the focal plane, chromatic aberration is undetectable.

Standard configuration:

Low expansion glass optical set, carbon/aluminum truss tube design, splitted light baffle, four support dovetails, three ventilation fans and mirrors heaters with manual control, shroud and cap covers. Primary cell detachable for an easy cleaning of mirror.

AVAILABLE IN FULL CARBON, ATHERMIC LIGHTWEIGHT TRUSS TUBE.

Optional accessories: 0.75x reducer, rotators, secondary mirror focuser (from 500mm), mirror shutters, OS Bus advanced electronic, customized imaging train parts and more. Available also with Officina Stellare mount.

  • Optical set: Officina Stellare Riccardi Dall-Kirkham proprietary optical scheme
  • Primary mirror diameter: 700 mm
  • Focal ratio: F/7
  • Focal length: 4900 mm
  • Linear obstruction: 55%
  • Full corrected and illuminated field: 80mm
  • Weight:  140Kg
  • Back focus length from back plate: about 240mm (9.5”)
  • RMS polychromatic (410 to 750 nm) spot size: under 3 micron on axis
  • RMS polychromatic (410 to 750 nm) spot size: under 5 micron @ 40 mm off axis