Takahashi TKA31587S: TOA-645 correction kit for TOA-130
TOA-645 corrector for photography with the TOA-130NFB. Check the connections and the distance to the sensor according to the Takahashi diagram.
CHF 529.03
Takahashi TOA-130NFB telescope with a 130 mm ED triplet, native focal length of 1,000 mm at F/D 7.7, and a 4.0-inch rack. Part number TOK13210, tube only.
CHF 6'515.80incl. Swiss VAT
Reference TOK13210
The Takahashi TOA-130NFB combines a 130 mm objective with a native focal length of 1,000 mm, for an F/D ratio of 7.7. Its wide-air-gap triplet includes two S-FPL53 ED glass lenses. This optical design corrects chromatic aberrations to preserve sharpness and contrast in both astronomical observation and photography.
The 4-inch rack features the focusing mechanism specific to the NFB version. The native back focus is 274.5 mm. The retractable dew shield reduces the footprint for storage.
The TOA-35FL corrector and the TOA-35RD reducer are available as options. To assemble the photographic train, follow the diagram for the TOA-130NFB version and the selected accessory: it specifies the rings and the distances to the sensor.
TOA-130NFB optical tube (single unit). The finder, its mount, and the mounting clamp must be purchased separately.
Choose a frame and mount that are compatible with the assembled unit, then check the balance and tightness.
Takahashi TOA-130NFB Documentation
The Takahashi TOA-130NFB is an apochromatic triplet refractor with two ED lenses, featuring a 130 mm aperture and a 1000 mm focal length (f/7.7), 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/7.7, which is rather slow for deep-sky imaging, it benefits from being used with a focal reducer.
With an APS-C camera featuring 3.76 µm pixels (Sony IMX571 sensor), you get approximately 0.78″ per pixel for a field of view of 1.3° × 0.9°. This is a fine resolution: under moderate turbulence, 2×2 pixel binning or a 0.7× reducer will produce rounder stars. With the 0.7× reducer, the resolution increases to 1.11″ per pixel and a field of view of 1.9° × 1.3°.
Yes, whenever you're using an APS-C or full-frame sensor: like any uncorrected triplet lens, it has a slight field curvature that stretches the stars in the corners. Dedicated correctors: Takahashi TKA31587S: TOA-645 correction kit for TOA-130 ; Takahashi TOA-35 - 0.7× focal reducer for TSA/TOA (focal length equivalent to 700 mm, f/5.4); Takahashi 35FL: 50.8 mm field corrector for TSA/TOA.
274.5 mm (metal back); 117.5 mm with TOA-35FL; 56.2 mm with TOA-645FL; 65.5 mm with TOA-35RD 0.7×. This focal length is measured from the thread to the sensor, including rings, filter wheel, and filter drawer: adhering to this measurement down to the millimeter ensures that stars remain round in the corners.
The tube weighs about 11.7 kg; with the camera, filter wheel, and guide scope, expect a total weight of around 13.2 kg: you’ll need a heavy-duty mount with a capacity of over 25 kg for astrophotography, ideally mounted on a fixed pillar. A refractor requires no collimation: once balanced, it’s ready to use as soon as it reaches operating temperature. At 102.2 cm long, it requires a spacious storage case.
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 260×.
Here are a few accessories we've selected for this model, depending on your needs.
TOA-645 corrector for photography with the TOA-130NFB. Check the connections and the distance to the sensor according to the Takahashi diagram.
1.5× ED extender to increase the focal length. For photography, Takahashi recommends the TOA-35 corrector; check the connections and do not place a filter on the eyepiece end of the extender.
190-mm motorized flat panel for a 180-mm anti-fog screen. Check the mounting, alignment, travel, cables, and ensure the control unit is compatible with your system.
Takahashi 156WM double collars for TOA-130NS or NFB, as an alternative to the 156WT. Top plate included; separate bottom plate. Check the attachment to the mount, the load, and the balance.
Takahashi 156WT double collars for TOA-130NS or NFB, as an alternative to the 156WM. Upper plate included; separate L-shaped lower plate. Check the attachment to the mount, the load, and the balance.
Takahashi 156S-GT symmetrical one-piece mount, an alternative to the 156WM or 156WT double mounts; separate lower plate. Check the mounting, load, and balance.
Recommended diameter: 200 mm. Check the measurement and the mounting.
Pro V2 may be possible, depending on the corrector; check the rings and the draw.
