RiDK 500

RiDK 500

The RiDK (Riccardi Dall-Kirkham) represents the new reference point for all modified Dall-Kirkham instruments available on the market.

Specifications

  • ENTRY PUPIL DIAMETER:
  • 500 mm (20'')
  • FOCAL RATIO:
  • F/7
  • FOCAL LENGTH:
  • 3500 mm (140'')
  • LINEAR OBSTRUCTION:
  • 48%
  • FULLY CORRECTED AND ILLUMINATED FIELD:
  • 80 mm
  • WEIGHT:
  • 85 Kg
  • BACK FOCUS EXTRACTION (FROM BACK PLATE):
  • about 240 mm (9.5'')


Overview "RiDK" SERIE

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.