page contents

Planewave CDK24 f/6.5 Astrograph - FREE SHIPPING

Price includes VAT, plus delivery


The CDK24 is a 24 inch (0.61 m) f/6.5 Corrected Dall-Kirkham Astrograph telescope. The CDK24 covers a 70 mm field of view without any field curvature, off-axis coma, or astigmatism. The instrument weight is 240 lbs (109 kg) and comes standard with a back plate retaining ring ready to accept the focuser of your choice.

The abbreviation CDK stands for the optical system of the PlaneWave astrographs - a Dall Kirkham Cassegrain with a optical correction unit. The CDK design far exceeds the off-axis performance of most commercial telescope designs including the Ritchey-Chrétien design.

This telescope is also available in Ritchey-Chrétien (RC) optics and infrared optimized.


Optical Design Corrected Dall-Kirkham (CDK)
Aperture 24" (610 mm)
Focal Length 3.962 mm (155.98 inch)
Focal Ratio f/6.5
Image Field 70mm
Back Focus Distance 14.1" (358 mm) from Mounting Surface, 5.81" (148 mm) from Racked in Focuser
Central Obstruction 47% of the Primary Mirror Diameter
Substrate Fused Silica
Optical Length 55,98 inch (1.422 mm)
Optical Tube Weight 240 lbs (109 kg)



Browse these categories as well: Corrected Dall Kirkham, Planewave