You have a Takahashi FC-60CB and you want to upgrade to a more powerful model without investing in a complete product? This kit is made for you. This is a part of the optical tube of the FC-76DCU refractor, including the lens and the dew shield, which comes to replace the tube of the Takahashi FS-60CB telescope. To fit it, simply unscrew the lens from the FS-60CB, fit this kit in its place and that's it; you now have an FC-76DCU refractor.
This kit gives you the possibility to easily have two Takahashi instruments, dismountable and ultra-transportable, for observation or roaming imaging.
Once the kit is assembled, the telescope has all the optical and mechanical properties of the FC-76DCU, including the accessory mounts at the focuser and the system-charts that expose them. You will also need to use the corrector, reducer and focal length extender of the FC-76D scope and not those of the FS-60CB, which have become incompatible.
Characteristic | Takahashi FC-76DCU refractor |
Objective | Fluorite doublet apochromat |
Lens cell | Air-spaced doublet. Fluorite in the back. |
Coatings | Hard multicoatings |
Diameter | 76 mm |
At prime focus | |
Focal ratio | 570 mm |
Focal ratio | F/7.5 |
Metal Back Distance | 159 mm |
With 76D FL field flattener | |
Focal length | 594 mm |
Focal ratio | F/7.8 |
Image circle diameter | 40 mm |
Metal Back Distance | 56.2 mm |
With FC/FS MFL1.04X field corrector | |
Focal length | 589 mm |
Focal ratio | F/7.8 |
Image circle diameter | 44 mm |
Metal Back Distance | 85.2 mm |
With 76D RD focal reducer | |
Focal length | 417 mm |
Focal ratio | F/5.5 |
Image circle diameter | 36 mm |
Metal Back Distance | 56.2 mm |
With EX-Q1.6X focal extender | |
Focal length | 916 mm |
Focal ratio | F/12 |
Metal Back Distance | 157 mm |
With 1.7XR focal extender | |
Focal length | 969 mm |
Focal ratio | F/12.8 |
Characteristic | Takahashi FC-76DCU refractor |
Length of the optical tube | 656 mm (with dew-shield) |
Diameter of the optical tube | 80 mm |
Diamètre of the dew-shield | 80 mm |
Weight | 1.9 kg |
Focuser | Rack-and-pinion |
Spot-diagram of the Takahashi FC-76DS refractor at prime focus
Spot-diagram of the Takahashi FC-76DS refractor with 76D-FL field corrector
Spot-diagram of the Takahashi FC-76DS refractor with FC/FS MFL1.04X field corrector
Spot-diagram of the Takahashi FC-76DS refractor with 76D-RD focal reducer
System-chart of the Takahashi FC-76DCU refractor | Télécharger |
System-chart of the Takahashi FC-76DCU refractor with Extender-C2X | Télécharger |
System-chart of the Takahashi FC-76DCU refractor with Extender-Q1.6X | Télécharger |
Takahashi FC-76DC refractor's instruction manual | Télécharger |