The Takahashi 0.73X reducer QE reduces the focal length of the FSQ-106ED (not EDX4) and FSQ-85ED telescopes by 0.73X, increasing the speed of the optical system for astrophotography. The reducer produces a 44 mm diameter image circle that is ideal for larger imaging chips.
Specifications
Telescope with Adapter |
FSQ-85ED with QE0.73X RD | FSQ-106ED with QE0.73X RD |
Adapter Part Number |
TKA36580 | TKA36580 |
Aperture |
85mm | 106mm |
Resolution |
1.36" | 1.09" |
Limiting Magnitude |
11.4 | 11.9 |
Light Gathering Power |
147X | 229x |
Focal Length |
327mm | 386mm |
Focal Ratio |
f/3.8 | f/3.6 |
Image Circle Diameter |
44mm | 44mm |
Optical Type |
Double ED Quadruplet | Flourite ED Quadruplet |
Tube Diameter |
95mm | 125mm |
Tube Length (With Lens hood retracted) |
615mm (525mm) | 675(580mm) |
Tube Weight |
3.6kg | 7kg |
Recommended Finder |
6x30 | 7x50 |
Metal Back Distance of Reducer |
72.2mm | 72.2mm |
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