Takahashi FC-76DCU F/7.5 Fluorite Doublet Apo Refractor Telescope
The Takahashi FC-76DCU apochromatic refractor is equipped with a fluorite doublet at F/7.5. Its very low weight, only 1.9 kg for the tube alone, makes it a very portable instrument, usable on a simple photo tripod. It comes with a fixed dew shield and a 31.75 mm compact rack-and-pinion focuser inherited from the FS-60CB. A brake locks the focus and it is possible to add an optional Camera Angle Adjuster (CAA) to make it easier to frame the picture.
The FC-76DCU can be equipped with a focal reducer (76D-RD) or with a field corrector (76D-FL or multi-flattener FC/FS MFL1.04X) for deep sky imaging.
The 80 mm diameter tube is in 2 parts. It can receive the Extender 1.7XR from the FS-60Q, which increases the F/D ratio from 7.5 to 12.75. The focal length gain then allows optimal chromatic correction for unforgettable planetary observations.
For FS-60CB owners, there is a conversion kit available to convert this refractor to FC-76DCU.
Specifications: Takahashi FC-76DCU F/7.5 Fluorite Doublet Apo Refractor Telescope
Characteristic
- Objective: Fluorite doublet apochromat
- Lens cell: Air-spaced doublet. Fluorite in the back.
- Coatings: Hard multicoatings
- Diameter: 76 mm
- Length of the optical tube: 656 mm (with dew-shield)
- Diameter of the optical tube: 80 mm
- Diameter of the dew-shield: 95 mm
- Weight: 1.9 kg
- Focuser: Rack-and-pinion
At prime focus
- Focal ratio: 570 mm
- Focal ratio: F/7.5
- Metal Back Distance: 159 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
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