Takahashi FC-100DF f/7.4 Doublet Fluorite APO Refractor
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Takahashi FC-100DF f/7.4 Doublet Fluorite APO Refractor

£2,399.00
  (1 Review)
✓ 2 year warranty

:  

Out of stock due 10-15 working days

About this product

Model:  tak_tfk10110
Part Number:  TFK10110

Takahashi FC-100DF f/7.4 Doublet Fluorite Apochromat Refractor

Essentially, a Takahashi FC-D100DC fitted with the larger, more robust Sky 90 2.7" focuser, making it more suitable for deep sky imaging with the optional FC35 Focal Reducer (provides a 44mm circle and an F4.9 focal ratio).

The new Takahashi FC-100DF has premium quality F7.4 Fluorite doublet optics for superb contrast, sharpness and colour correction.

Utilises the Steinheil design with a fluorite rear element and an eco-glass front element. 

It is a versatile telescope that provides wonderful views at low and high magnifications but can also be used for astrophotography. When combined with the optional FC-76 Reducer, the FC-100D operates at F5.4 and delivers a fully corrected 35mm circle that is perfect for APS-sized sensors. 

The FC-100D is pleasingly light but well-engineered, like all Takahashi scopes. 

The weight of the OTA is only 3.6 Kg. 

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:

Telescope Field of View Simulator

 

What's in the box

OTA Only Includes:

  • FC-100DF OTA

OTA Package Includes:

  • FC-100DF OTA
  • TKA00551 6x30 Finder
  • TKA00562 Finder bracket
  • TKA21420 Tube holder (95mm)

Specifications

FC-100DC Type Fluorite Apochromat
Aperture 100mm
Focal length 740mm
Focal ratio F/7.4
Diameter of main tube 95mm
Length of main tube 815mm (with fixed dew shield)
Weight of OTA 3.5kg
Back focus 161mm
With 76D Reducer (TKA18580)
Focal length 540mm
Focal ratio F/5.4
Image circle φ30mm
With 76D Flattener (TKA18582)
Focal length 770mm
Focal ratio F/7.7
Image circle φ35mm
With Extender-Q 1.6X (TKA00595)
Focal length 1,185mm
Focal ratio F/11.9
With Extender C2X (TKA00594)
Focal length 1,480mm
Focal ratio F/14.8
With FC35 Reducer (100DF)
Focal length 488mm
Focal ratio F4.9
Image circle φ44mm

Customer reviews

Average Rating (1 Review):  
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One happy owner
19 June 2024  | 

This is my first Takahashi and it's just superb in all respects. I knew it would arrive triple boxed but I wasn't expecting the boxes to be air-gapped with custom fit polystyrene, and this pretty much sets the theme. Everything just speaks of quality - the scope, the presentation, fit & finish, even having a manual - it makes for a very nice first impression. I went full Tak and bought the accessory bundle as well - I'd heard the tube clamp is handy for quick balancing (it is) and I think having a finder just completes the look of a refractor (even if it's a bit pricey and not overly useful, but more on that later). The scope is surprisingly light given its size, I have it mounted on an AZ4 no issues at all.

I fortunately had clear skies two days later on a light-ish June evening. No planets, no Moon, so I looked at the brighter deep sky objects M13, M92, M27, M57. As expected, the views are exceptional with excellent contrast and stars standing out very bright and sparkly. M13 was nicely resolved into stars at 82x and looked great. I'm so pleased I have the finder and it puts up great views in its own right. I'd forgotten how much it helps to build the anticipation before viewing through the main scope and I've found star hopping with it to be very enjoyable. There's something about the finder and main scope working in harmony like this I think. I moved on to M51 for more of a test and both cores were visible with some shape to NGC5195 and a halo to M51, which I thought was pretty good considering the June sky. I was also imaging M51 at the time with another scope so the spiral arms I saw through the Tak were unfortunately just a recent memory of the laptop screen

I ended with a quick tour round the Sagittarius star clouds where I lucked upon M17 just from swinging the scope round, it was impressively bright and detailed. M8 and M20 both fit in the same finder FOV - little grey clouds surrounded by piercingly bright stars against a deep blue sky, wow. It was a shame there was a crosshair in the way tbh!

On a more functional note, all my eyepieces come to focus without swapping any adapters (1.25" and the focuser feels very sturdy, if a little stiff but I understand that is adjustable. The single speed focuser may pose a problem at high magnification but it's certainly obvious when in focus so that helps. Stars show nice distinct rings either side of focus which felt very powerful as my previous refractors have shown rings on one side of focus but blurry on the other. I seriously cannot wait to view the planets with this scope. The brief time I've spent with the Tak so far has more than confirmed it was worth taking the plunge (it took some serious "should I, shouldn't I" thinking). I know everyone says it but the views really are something special and it's also great to look at when inside. Massive thanks to Chris for all the assistance with my purchase - I am a very happy owner indeed!

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