Takahashi FC-35 .66X Reducer
for FC-100DF, FS-102 & FC-100 Telescopes
The FC-35 0.66 X Reducer was designed by Takahashi Japan for a wide variety of their FC and FS series telescopes. This FC-35 comes with a dedicated CA 100 Ring, and is compatible with the FC-100DF, FC-100, and the FS-102. A FC-35 with CA 130 Ring is also available for the FC-125, FC-128 and FC-152. The only difference between the two models is the size of the included CA Ring.
The FC-35 will reduce the focal length of your telescope by 10%, and will provide a 44 mm diameter image circle. The metal back, as measured from the flat, rear-most shoulder of the FC-35, is 78.1 mm. With the FC-35 installed, each compatible telescope will have the following focal length and f/ratio:
- FC-100DF: 485 mm, f/4.9
- FC-100: 526 mm, f/5.3
- FS-102: 542 mm, f/5.3
- Additional Information
SKU TK-TKA-19580 Manufacturer Takahashi Barrel Size Thread-on Warranty 1 Year Warranty
- Included Items
- FC-35 Reducer
- CA 100 Ring
- Questions & Answers
Product QuestionsI have tried imaging with the DF using a Sony A6000 (APSC) and do not like the results. I guess using this reducer would require me to use the Sony A7RII full frame sensor. I would like to see samples first.Question by: Henry K Staub on Dec 24, 2016 11:02:00 AMThis reducer will work with any E-mount camera as long as the manufacturer specified backfocus of 56mm from the Wide-T (M54x0.75) threads on the CA-100 ring to the camera's focal plane. You will need either a Sony NEX T-ring with a custom 1mm thick adapter or a Sony E-mount to Sony A-mount adapter plus one of Takahashi's Soy A-mount Wide T adapters. Both the A7 series and the A6xxx cameras will work using the same adapters.
Unfortunately, neither the manufacturer nor users have posted many pictures showing this setup in action. The stated image circle is 44mm, so it will cover both APS-C and 35mm formats.Answer by: Chris Hendren on Dec 27, 2016 2:48:00 PM
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