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 category includes products which are not kept in stock and for some reasons -which don’t depend on our company- can’t be available in less than 14 days. Specifically, this category includes new products thar are pre-advertised by manufacturers, however they are not available in Greece yet. You can pre-order these items with a special preferential price. If the estimated arrival date of this product is already known, then the estimated date will be written above the indication “AVAILABLE UPON REQUEST”.
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 |
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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