Home > Astronomical Telescopes > Officina Stellare > RiDK Series
Model: RIDK400SGABrand: Officina Stellare
Special order, delayed despatch
The RiDK (Riccardi Dall-Kirkham) represents the new reference point for all modified Dall-Kirkham instruments available on the market.
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.
SpecificationsENTRY PUPIL DIAMETER:400 mm (16'')FOCAL RATIO:F/7FOCAL LENGTH:2800 mm (112'')LINEAR OBSTRUCTION:48%FULLY CORRECTED AND ILLUMINATED FIELD:70 mmWEIGHT:40 KgBACK FOCUS EXTRACTION:about 240 mm (9.5'')
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