Takahashi CCA-250 Tri-Focal Astrograph
| Article number: | TCK25010 |
| Availability: | More on the Way to us |
| Delivery time: | More on the Way to us |
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.
CCA 645 Reducer-CA System Chart
SPECIFICATIONS for the CCA250
| Optical System | Corrected Cassegrain |
| Effective aperture | 250mm |
| Focal ratio | f/5 |
| Metal back distance | 193.5mm |
| Tube diameter | ø306mm |
| Tube length | 870mm [34.25”] |
| Tube weight | 22.8kg [50.16lbs] |
| Power source | 12vDC x 2A |
