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FC-100DZ refractor

Description

The Takahashi FC-100DZ apochromatic refractor has a different design from the FC-100DC/DF. It has a fluorite doublet with a slightly extended focal length, 800 mm instead of 740 mm. The color correction is further improved and the results are closer to the best instruments of the brand. This lens modification makes the FC-100DZ one of the most powerful and versatile 100mm scopes on the market.

It is equipped with a 50.8 mm rack and pinion focuser, identical to the FC-100DF's one, allowing the mounting of heavier cameras. Its use is still very general purpose and even a small mount will allow its full potential to be exploited.

If you wish to take pictures at the native focal length of the refractor, a field corrector is available (the multi-flattener FC/FS 1.04X). It can also be equipped with a focal reducer: either the 76D-RD model normally intended for the small focuser, or the FC-35RD model, specific to the FC-100DF and its 50.8mm focuser. The use of the latter is recommended for cameras or DSCs equipped with APS-C or higher.

Characteristics

Takahashi FC-100DZ refractor

Characteristic Takahashi FC-100DZ refractor
Objective Fluorite doublet apochromat
Lens cell Air-spaced doublet. Fluorite in the back
Coatings Hard multicoatings
Diameter 100 mm
At prime focus
Focal length 800 mm
Focal ratio F/8
Metal Back Distance 223 mm
With FC/FS MFL1.04X field corrector
Focal length 820 mm
Focal ratio F/8.2
Image circle diameter 44 mm
Metal Back Distance 71.2 mm
With 76D RD focal reducer
Focal length 580 mm
Focal ratio F/5.8
Image circle diameter 30 mm
Metal Back Distance 56.2 mm
With FC-35RD focal reducer
Focal length 530 mm
Focal ratio F/5.3
Image circle diameter 44 mm
Metal Back Distance 68.8 mm
With EX-Q1.6X focal extender
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

Spot-diagram of Takahashi FC-100DZ refractor at prime focus

Spot-diagram of Takahashi FC-100DZ refractor with FC/FS MFL1.04X field corrector

Spot-diagram of Takahashi FC-100DZ refractor with FC-35RD focal reducer

Documentation

System-charts

System-chart of Takahashi FC-100DZ refractor Télécharger
System-chart of Takahashi FC-100DZ with FC-35RD Télécharger
System-chart of Takahashi FC-100DZ with Extender Q 1.6X Télécharger

Instruction manuals

Takahashi FC-100DZ instruction manual Télécharger

Available configurations

FC-100DZ refractor

Reference : [TFK10300]
[TKA00551] - Finder 6x30
[TKA00562] - Finder bracket for 6x30 finder
[TKA21420] - Cradle 95S
[TFK10310] - FC-100DZ refractor OTA