Takahashi FC-100DZ Fluorite Refractor
The FC-100DZ is a fluorite doublet with a 100 mm aperture and an 800 mm focal length. In this doublet design, Takahashi has paired the fluorite element with a low dispersion glass having a high refractive index. This combination provides excellent optical performance across the entire visible spectrum with a Strehl ratio in excess of 97.6% across this range. In addition, to satisfy the increasing demands of today’s imaging system, this glass combination minimizes the blue halo sometimes present at shorter wavelengths. This halo intensity is reduced by about 50% when compared to the existing FC-100D. The FC-100DZ is fully compatible with the accessories available used with the existing FC-100 telescopes, including the FC/FS Muli-flattener and the FC-35 0.66X Reducer. With FC-35 reducer, this telescope becomes an excellent imaging system, illuminating a full frame chip at f/5.3. Mechanically, the FC-100DZ has a tube diameter of 95 mm and a retractable dew shield. With the dew shield retracted and accessories removed, the total length is only 595 mm, easily carried on most commercial flights. The FC-100DZ utilizes the same focuser used on the FC-100DF and DL and weighs approximately 3.8 kg.
The FC-100DZ is fully compatible with the accessories available used with the existing FC-100 telescopes, including the FC/FS Muli-flattener and the FC-35 0.66X Reducer. With FC-35 reducer, this telescope becomes an excellent imaging system, illuminating a full frame chip at f/5.3.
Mechanically, the FC-100DZ has a tube diameter of 95 mm and a retractable dew shield. With the dew shield retracted and accessories removed, the total length is only 595 mm, easily carried on most commercial flights. The FC-100DZ utilizes the same focuser used on the FC-100DF and DL and weighs approximately 3.8 kg.
Technical Specifications
| CHARACTERISTIC |
TAKAHASHI FC-100DZ REFRACTOR |
| Objective |
Fluorite doublet apochromat |
| Lens cell |
Air-spaced doublet. Fluorite in the back |
| Coatings |
Hard multicoatings |
| Diameter |
100 mm |
| Focal length |
800 mm |
| Focal ratio |
F/8 |
| Metal Back Distance |
223 mm |
| Focal length |
820 mm |
| Focal ratio |
F/8.2 |
| Image circle diameter |
44 mm |
| Metal Back Distance |
71.2 mm |
| Focal length |
580 mm |
| Focal ratio |
F/5.8 |
| Image circle diameter |
30 mm |
| Metal Back Distance |
56.2 mm |
| Focal length |
530 mm |
| Focal ratio |
F/5.3 |
| Image circle diameter |
44 mm |
| Metal Back Distance |
68.8 mm |
| Focal length |
1185 mm |
| Focal ratio |
F/11.9 |
| Metal Back Distance |
157 mm |
Takahashi FC-100DZ refractor
| CHARACTERISTIC |
TAKAHASHI FC-100DZ REFRACTOR |
| Length of the optical tube |
840 mm (770 mm with retracted dew shield) |
| Diameter of the optical tube |
95 mm |
| Diameter of the dew shield |
- |
| Weight |
3.9 kg |
| Focuser |
Rack-and-pinion |
In the Box
Optical Tube Assembly
F-50.8 AD Ring TKP19001
50.8 Sleeve TKP00113
Coupling (S) TKP00103
Eyepiece Adapter 50.8 TKP27110
Extension tube (L) TKP31112
Manual & Warranty
System-chart of Takahashi FC-100DZ refractor
System-chart of Takahashi FC-100DZ with FC-35RD
System-chart of Takahashi FC-100DZ with Extender Q 1.6X
Takahashi 5-Years Warranty
