0.73X Reducer for FSQ 106EDX4, CCA 250 & Mewlon 250CRS/300CRS Telescopes - TKA82580 - Perfect for Astrophotography and Astronomical Observation
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Description
Description
The Takahashi Reducer CR 0.73X is a is compatible with the Mewlon 250 CRS, Mewlon 300CRS, CCA-250, and FSQ-106EDX4 telescopes, providing a focal length reduction of .73X. The reducer produces a 44 mm diameter image circle suitable for medium format cameras and chips.
Specifications
Telescope with Adapter | FSQ-106EDX4 with CR 0.73X RD106mm | Mewlon 250 CRS with CR 0.73X RD106mm | Mewlon-300CRS with CR 0.73X RD106mm | CCA-250 with CR 0.73X RD106mm |
Adapter Part Number | TKA82580 | TKA82580 | TKA82580 | TKA82580 |
Aperture | 106mm | 250mm | 300mm | 250mm |
Resolution | 1.09" | 0.46" | 0.4" | 0.46" |
Limiting Magnitude | 11.9 | 13.8 | 14.2 | 13.8 |
Light Gathering Power | 229x | 1276X | 1827x | 1276x |
Focal Length | 387mm | 1825m | 2160mm | 910mm |
Focal Ratio | f/3.6 | f/7.3 | f/7.2 | f/3.6 |
Image Circle Diameter | 35mm | 35mm | 35mm | 38mm |
Optical Type | Double ED Quadruplet | Dall-Kirkham | Dall-Kirkham | Modified Cassegrain |
Tube Diameter | 125mm | 280mm | 324mm | 306mm |
Tube Length (With Lens hood retracted) | 675mm (580mm) | 945mm | 1045mm | 870mm |
Tube Weight | 7.0kg | 12.0kg | 27.0kg | 22.8kg |
Recommended Finder | 7x50 | 7x50 | 7x50 | 7x50 |
Metal Back Distance | 72.2mm | 72.2mm | 72.2mm | 56.2 |
