The Takahashi 645 Reducer 0.7X reduces the focal length of the FSQ-130ED telescopes by 0.7X, increasing the speed of the optical system for astrophotography. The reducer produces a 70 mm diameter image circle that is ideal for larger imaging chips.
Specifications
Telescope with Adapter |
FSQ-130ED with 645-0.7X RD |
Adapter Part Number |
TKA38580 |
Aperture |
130mm |
Resolution |
0.89″ |
Limiting Magnitude |
12.3 |
Light Gathering Power |
345X |
Focal Length |
455mm |
Focal Ratio |
f/3.5 |
Image Circle Diameter |
70mm |
Optical Type |
Triple ED Quintuplet |
Tube Diameter |
156mm |
Tube Length (With Lens hood retracted) |
830mm (700mm) |
Tube Weight |
12.7kg |
Recommended Finder |
7×70 |
Metal Back Distance |
74mm |