TAKAHASHI
This refractor is very versatile. It allows striking observations with a light and compact tube, while offering great possibilities in deep sky astrophotography.
Available Upon Request
This includes products that we do not keep in stock but are only available upon request or have been announced in advance by the manufacturer. These items are usually shipped within 5-14 days. Once we receive your order, we will notify you by e-mail or telephone of the exact delivery time, as well as the amount of any deposit that will be required.
FC-76DS TUBE ASSEMBLY COMPLETE D-76mm F-570mm F/7.5 (FLUORITE DOUBLET)
The FC-76DS apochromatic refractor is equipped with a fluorite doublet at F/7.5, identical to that of the FC-76DCU. Its 95 mm diameter tube and 50.8 mm focuser allow it to support heavier cameras than its little sister can. It is equipped with a retractable dew shield which makes it more compact than the FC-76DCU with its fixed dew shield.
The FC-76DS can be equipped with a focal reducer or with a field corrector for photography. The image circle is 36 mm diameter at F/5.5 focal ratio with the flattener and 40 mm diameter at F/7.8 focal ratio with the corrector. There is also an optional Camera Angle Adjuster (CAA) for photographic framing and a microfocuser for finer focus.
This refractor is very versatile. It allows striking observations with a light and compact tube, while offering great possibilities in deep sky astrophotography.
| Net Weight (g) | 3000 |
|---|---|
| Optical design | Apochromatic Refractor |
| Aperture (mm) | 76 |
| Focal length - F (mm) | 570 |
| Focal ratio (f/) | 7.5 |
| Mount | Not included |
| Finderscope | 6x30 |
| Maximum useful magnification (x) | 152 |
In the box:
| Characteristic | Takahashi FC-76DS refractor |
| Objective | Fluorite doublet apochromat |
| Lens cell | Air-spaced doublet. Fluorite in the back. |
| Coatings | Hard multicoatings |
| Length of the optical tube | 660 mm (567 mm with retracted dew shield) |
| Diameter of the optical tube | 95 mm |
| Diameter of the dew shield | 114 mm |
| Focuser | Rack-and-pinion |
| At prime focus | |
| Focal length | 570 mm |
| Focal ratio | F/7.5 |
| Metal Back Distance | 173 mm |
| With 76D-FL field corrector | |
| 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 |

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