An evolution of the Dall-Kirkham design, the RiDK is probably the most “universal” family in our catalog, and the most affordable. With a f/7 native focal ratio, the RiDK (Riccardi Dall-Kirkham) represents the new reference point for all modified Dall-Kirkham instruments available on the market.
The unique experience and creativity of Massimo Riccardi, Chief Optical Designer at Officina Stellare, created this new family of telescopes. with superior performance and image quality.
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.
| SPECIFICATIONS | |
|---|---|
| ENTRY PUPIL DIAMETER | From 400 mm (16”) to 800 mm (32”) |
| FOCAL RATIO | F/7 |
| FOCAL LENGTH | From 3200 mm (126”) to 6400 mm (252”) |
| LINEAR OBSTRUCTION | 47% |
| FULLY CORRECTED AND ILLUMINATED FIELD |
From 60 mm to 90 mm |
| WEIGHT | From 40 Kg to 180 Kg |
| BACK FOCUS EXTRACTION | From about 220 mm (8.6”) to about 300 mm (12”) |
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