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Takahashi TOA-35 0.7x Reducer for TOA-150, TSA-120 and TSA-102

Price: $1,190.00

  • Manufacturer: Takahashi
  • MPN: TKA32580B
  • SKU: TKA32580B
  • Availability: Ships from Warehouse

*Is ONLY to the LOWER 48.
Not Alaska/Hawaii/ PR/Guam/Thailand, etc

The ideal design for a reducer is its ability to reduce the f-stop while flattening the field and controlling chromatic aberration. The TOA-35 0.7x reducer is configured with 4-elements in three groups and uses two low dispersion, high refractive index glass , while reducing the focal length by a factor of 30%.

The TOA-35 reducer produces 3-micron stars in the center of the field and 6-micron stars at the edge with a very flat field. There is also an improvement in the color correction when used with the TOA-130/150.

This high performance optical system produces images that will be flat, sharp and highly corrected for color. When used with the TSA Series the image is 8-microns in the center and 12-microns at the edge.

The TOA-35 Reducer is available in two models: the 130 model is designed to work with the TOA-130 and the 150 model is designed to work with the TOA-150, the TSA-120 and TSA-102. Each model is supplied as a set that includes the reducer and a wide mount Ø55mm adapter to attach the reducer to the camera that is used.

TOA-35 0.7x Specifications

Model Focal Length Image Circle CA Ring
TOA-130 698mm [f/5.4] Ø44mm 130
TOA-150 775mm [f/5.2] Ø44mm 150
TSA-102 575mm [f/5.6] Ø44mm 150
TSA-120 635mm [f/5.3] Ø44mm 150


Metal back distance:

TOA-130 version 71.5mm
TOA-150/TSA version 68.5mm

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