1.5x CR Extender for CCA 250 & Mewlon 250CRS/300CRS Telescopes - TKA82595 - Enhance Astronomical Observation & Astrophotography
$357.5
$650
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Description
Description
The Takahashi Extender-CR 1.5X is designed specifically for the CCA and Corrected Mewlon series of telescopes. It increase the focal length of these instruments without degrading the optical performance, maintaining pin point stars across the field.
Specifications
Telescope with Adapter | CR-1.5X EX with Mewlon-250CRS | CR-1.5X EX with Mewlon-300CRS | CR-1.5X EX with CCA-250 |
Adapter Part Number | TKA82595 | TKA82595 | TKA82595 |
Aperture | 250mm | 300mm | 250mm |
Resolution | 0.46" | 0.4" | 0.46" |
Limiting Magnitude | 13.8 | 14.2 | 13.8 |
Light Gathering Power | 1276X | 1872X | 1276X |
Focal Length | 3780mm | 4475mm | 1880mm |
Focal Ratio | f/15.1 | f/14.9 | f/7.5 |
Image Circle Diameter | 44mm | 44mm | 40mm |
Optical Type | Dall-Kirkham | Dall-Kirkham | Modified Cassegrain |
Tube Diameter | 280mm | 324mm | 306mm |
Tube Length (With Lens hood retracted) | 945mm | 1045mm | 870mm |
Tube Weight | 12.0kg | 27.0kg | 22.8kg |
Recommended Finder | 7x50 | 7x50 | 7x50 |
Metal Back Distance | 117.5 mm | 117.5mm | 117.5mm |
