Description
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.
Specifications
Telescope |
CCA-250 |
Part Number |
TCK25010 |
Aperture |
250 mm |
Resolution |
0.46" |
Limiting Magnitude |
13.8 |
Light Gathering Power |
1276X |
Focal Length |
1250 mm |
Focal Ratio |
f/5.0 |
Image Circle Diameter |
88 mm |
Optical Type |
Modified Ritchey–Chrétien Cassegrain |
Tube Diameter |
306 mm |
Tube Length (With Lens hood retracted) |
870 mm |
Tube Weight |
22.8 kg |
Recommended Finder |
7x50 |
Metal Back Distance |
193.9 |
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