FC-100DF tube assembly complete D-100mm F-740mm F/7.4

FC-100DF tube assembly complete D-100mm F-740mm F/7.4

FC-100DF tube assembly complete D-100mm F-740mm F/7.4

TAKAHASHI

The Takahashi FC-100DF apochromatic refractor is designed around a fluorite doublet at F/7.4. Its use remains very versatile and even a small mount will make it possible to exploit its full potential.

€3,220.00

Available Upon Request

Available Upon Request

In this case, we do not keep the products in stock but are only available upon pre-order. As soon as we receive your order, we will notify you by e-mail or phone, about the exact delivery time.

Availability: In stock
SKU
TAK-TFK10100


FC-100DF TUBE ASSEMBLY COMPLETE D-100mm F-740mm F/7.4


The Takahashi FC-100DF apochromatic refractor is designed around a fluorite doublet at F/7.4. It is equipped with a 50.8 mm rack-and-pinion focuser, larger than that of the FC-100DC, allowing the mounting of heavier cameras. Its use remains very versatile and even a small mount will make it possible to exploit its full potential.

If you want to make astrophotography at the native focal length of the refractor, a field corrector is available. 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 50.8 mm focuser. The use of the latter is recommended for cameras or APNs equipped with APS-C or higher sensors.

Sun imaged with Takahashi FC-100DF telescope - Copyright: Lefteris Velissaratos 

More Information
Net Weight (g) 3600
Optical design Apochromatic Refractor
Aperture (mm) 100
Focal length - F (mm) 740
Focal ratio (f/) 7.4
Mount Not included
Finderscope 6x30
Maximum useful magnification (x) 200

In the box:

Characteristic Takahashi FC-100DF refractor
Objective Fluorite doublet apochromat
Lens cell Air-spaced doublet. Fluorite in the back
Coatings Hard multicoatings
Length of the optical tube 785 mm (with fixed dew-shield)
Diameter of the optical tube 95 mm
Diameter of the dew-shield 124 mm
Focuser Rack-and-pinion
 
At prime focus
Focal length 740 mm
Focal ratio F/7.4
Metal Back Distance 223 mm
 
With 76D-FL field corrector
Focal length 770 mm
Focal ratio F/7.7
Image circle diameter 35 mm
Metal Back Distance 56.2 mm
 
With FC/FS MFL1.04X field corrector
Focal length 757 mm
Focal ratio F/7.6
Image circle diameter 44 mm
Metal Back Distance 71.2 mm
 
With 76D RD focal reducer
Focal length 540 mm
Focal ratio F/5.4
Image circle diameter 30 mm
Backfocus 56.2 mm
 
With FC-35RD focal reducer
Focal length 480 mm
Focal ratio F/4.8
Image circle diameter 44 mm
Metal Back Distance 74.1 mm
 
With EX-Q1.6X focal extender
Focal length 1185 mm
Focal ratio F/11.9
Metal Bck Distance 157 mm
 
With C2X focal extender
Focal length 1480 mm
Focal ratio F/D 14,8
Metal Back Distance 73 mm

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

Spot-diagram of Takahashi FC-100D refractor with 76D FL field corrector

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

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

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