Takahashi FC-100DC Fluorite Doublet APO f/7.4
The Takahashi FC-100DC apochromatic telescope is designed around a fluorite doublet at F/D 7.4. It is equipped with a 31.75 mm compact rack-and-pinion focuser, inherited from the FS-60CB. It is much lighter than its big sister FC-100DF, only 2.8 kg compared to 3.6 kg for the FC-100DF. A small mount will be enough to make the most of it. Designed primarily for observation, it still allows the use of small cameras in astrophotography.
Photography at the native focal length of the refractor requires the 76D field corrector (or the multi-flattener). The FC-100DC can also be equipped with the 76D-RD focal reducer.
The user of large sensors, in APS-C or higher format, will prefer the FC-100DF model and its dedicated focal reducer, the FC-35RD.
Technical Specifications
| CAHARACTERISTIC |
TAKAHASHI FC-100DC REFRACTOR |
| Objective |
Fluorite doublet apochromat |
| Lens cell |
Air-spaced doublet. Fluorite in the back |
| Coatings |
Hard multicoatings |
| Diameter |
100 mm |
| Focal length |
740 mm |
| Focal ratio |
F/7.4 |
| Metal Back Distance |
161 mm |
| Focal length |
770 mm |
| Focal ratio |
F/7.7 |
| Image circle diameter |
35 mm |
| Metal Back Distance |
56.2 mm |
| Focal length |
757 mm |
| Focal ratio |
F/7.6 |
| Image circle diameter |
44 mm |
| Metal Back Distance |
71.2 mm |
| Focal length |
540 mm |
| Focal ratio |
F/5.4 |
| Image circle diameter |
30 mm |
| Metal Back Distance |
56.2 mm |
| Focal length |
1185 mm |
| Focal ratio |
F/11.9 |
| Metal Back Distance |
157 mm |
| Focal length |
1480 mm |
| Focal ratio |
F/D 14,8 |
| Metal Back Distance |
73 mm |
| Length of the optical tube |
815 mm (with fixed dew-shield) |
| Diameter of the optical tube |
95 mm |
| Diameter of the dew shield |
124 mm |
| Weight |
2.8 kg |
| Focuser |
Rack-and-pinion |
In the Box
Takahashi FC-100DC Fluorite Doublet APO f/7.4
Manual & Warranty
System-chart of Takahashi FC-100DC refractor
System-chart of Takahashi FC-100DC refractor with Extender Q 1.6X
System-chart of Takahashi FC-100DC refractor with Extender C2X
Takahashi 5-Years Warranty
