Takahashi TKA00582: 1.04x MFL FC/FS Corrector
FC/FS 1.04× corrector for the FC-100DC, an alternative to the 76D reducer. Be sure to use the CA-100 TKA19203 Multi ring and check the connections and focus.
CHF 207.51
Takahashi FC-100DC 100 mm telescope, focal length 740 mm at f/7.4, 31.75 mm rack. Part number TFK10000, configuration includes a finder scope and mount.
CHF 2'428.00incl. Swiss VAT
Part Number TFK10000
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi FC-100DC combines a 100-mm apochromatic objective with a native focal length of 740 mm, for an f/7.4 ratio. The air-spaced doublet features an internal fluorite lens and is coated with a hard multicoating.
The compact rack with a 31.75 mm lead comes from the FS-60CB. Takahashi intends this version primarily for visual observation, with the option to use small cameras and compatible photographic accessories. The dew shield is fixed.
The 76D-FL corrector, the FC/FS multi-flattener, and the 76D-RD reducer are available as options. The selection of rings and the distance to the sensor follows the specific diagram for the telescope and the selected corrector.
The researcher helps with alignment, while the collar holds the tube in place on a suitable mount.
Choose a mount that is compatible with your equipment, and check that the assembly is balanced and securely fastened.
Takahashi FC-100DC Documentation
The Takahashi FC-100DC is a 100-mm-aperture fluorite doublet refractor with a focal length of 740 mm (f/7.4), designed primarily for deep-sky astrophotography. Its focal length is ideal for observing galaxies (M51, M101, the Leo Triplet), planetary nebulae such as M27, and globular clusters, with a good level of detail. At f/7.4, its classic aperture-to-focal-length ratio requires slightly longer exposure times, but in return delivers very fine star points.
With an APS-C camera featuring 3.76 µm pixels (Sony IMX571 sensor), you get approximately 1.05″ per pixel for a field of view of 1.8° × 1.2°.
Yes, whenever you're using an APS-C or full-frame sensor: like any uncorrected doublet lens, it has a slight field curvature that stretches the stars in the corners. Dedicated correctors: Takahashi TKA00582: 1.04x MFL FC/FS Corrector.
161 mm (metal back); 71.2 mm with a 1.04× MFL. This focal length is measured from the thread to the sensor, including the rings, filter wheel, and filter drawer: adhering to this measurement to the nearest millimeter ensures that stars remain round in the corners.
The tube weighs about 2.8 kg; with the camera, filter wheel, and guide scope, expect it to weigh around 4.3 kg: an HEQ5-R Pro-class mount provides plenty of headroom. A refractor requires no collimation: once balanced, it’s ready to use as soon as it reaches operating temperature. At 81.5 cm long, it requires a decent-sized trunk.
Yes, as a bonus: with an angled mirror and an eyepiece, it provides high-contrast, color-accurate images of the Moon, the planets, and double stars, up to about 200× magnification.
Here are a few accessories we've selected for this model, depending on your needs.
FC/FS 1.04× corrector for the FC-100DC, an alternative to the 76D reducer. Be sure to use the CA-100 TKA19203 Multi ring and check the connections and focus.
76D Reducer for FC-100DC: 540 mm at f/5.4 and a specified image circle of 30 mm. An alternative to the 1.04× corrector; check the sensor format, mounts, and focal length.
Extender-Q 1.6× to increase the focal length and magnification. Check the connections according to the Takahashi diagram; the 50.8 mm TKA00596 adapter may be required depending on the mount.
120 mm heating strip for a 124 mm defogger. Check its location and clearance; a 12 V power supply or controller with an RCA connector and sufficient power must be provided separately.
Recommended diameter: 125 mm. Check the measurement and the mounting.
Recommended diameter: 150 mm. Check the measurement and the mounting.
