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This Page Updated
3rd July 2020

Page Date: 13-5-2013


The Takahashi FC-100DZ is the latest addition to Tak's Steinheil fluorite doublet refractor line-up. The high quality optics are optimized with a fluorite (CaF2) rear element and a front element made of low dispersion glass with a high refractive index. This combination produces wonderfully color corrected images with a Strehl ratio of 97.6% across the visible spectrum. Attached you will find spot, Strehl, and spherical aberration diagrams to support Takahashi's claims regarding these beautiful optics.

Like other refractors in the Takahashi FC-100 series, the 100DZ is compatible with the FC/FS Multi-Flattener and the FC-35 0.66X Reducer. This f/8 system will reduce to f/5.3 with the addition of said reducer, and provide full illumination to a full-frame sensor.

The FC-100DZ comes with the Takahashi 2.7" Rack & Pinion Focuser. It has a retractable dew shield. When the dew shield is retracted and any accessories are removed from the back end, the 100DZ becomes just 77cm long, making it an easy scope to take with you to remote viewing sites, solar eclipses, and vacations. The OTA weights a mere 3.4kg without accessories.
FC-100DL Images
FC-100DZ Technical Specifications
Type Fluorite Apochromat
Aperture 100mm
Focal Length 800mm
Focal Ratio f/8
Tube Diameter 95mm
Tube Length 840mm (Dew Shield Open) / 770mm (Dew Shield Rectracted)
Weight of OTA 3.8kg
with FC-35 Reducer 0.66X (TKA19580)
Focal Length 530mm
Focal Ratio f/5.3
Image Circle φ44mm
Adapter CA Ring 102 (TKA23202)
with Multi-Flattener 1.04x (TKA00582)
Focal Length 820mm
Focal Ratio f/8.2
Image Circle φ44mm
Adapter  Multi CA Ring 100 (TKA19203)
TAKAHASHI FC-100DZ Photo/Visual + Extender + Reducer System Chart  PDF - CLICK HERE
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The above images and information and gathered from various online sources

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