Takahashi CCA-250 Tri-Focal Astrograph

The Takahashi CCA-250 Tri-Focal Astrograph was developed to replace the Baker-Ritchey Chretien BRC-250. Rear assembly contains a large camera rotator and can utilize an electric rotator for remote operation. The Takahashi CCA-250 Tri-Focal Astrograph operates at three different focal lengths: f/5, f/3.9 (with 6345 Flattener) and f/8. Design incorporates a carbon fiber tube to allow for light weight and stable focus. Includes integrated D series compatible dovetail for easy mounting.

The CCA-250 is Takahashi’s modified Ritchey–Chrétien, developed as a replacement to the BRC-250 and is designed with imaging in mind.  The CCA-250 produces a flat field across an 88 mm image circle.  At prime focus, it is a 250-mm aperture, f/5.0 astrograph.  Coupled with a reducer, it becomes a fast f/3.6 telescope.  The CCA-250 has a carbon fiber tube and a temperature compensated lens cell to maintain focus during long exposures.  The CCA-250 also has an ASCOM compliant active focus system that enables computer control of the focusing system.

Telescope Specifications  

CCA Photo Visual System Chart

CCA 645 Reducer-CA System Chart

CCA Reducer-CR System Chart

CCA Extender System Chart

SPECIFICATIONS for the CCA250