Takahashi TOA-35 0.7X Reducer & Camera Ring - TOA-150, TSA-102/120

Takahashi TOA-35 0.7X Reducer & Camera Ring - TOA-150, TSA-102/120
Item # TK-TKA32580N
0 Questions(s)

Scheduled Delivery

  • This Takahashi TOA-35 reducer and camera ring set is made exclusively for the TOA-150, TSA-102, and TSA-120 refractors.
  • Constructed of four elements in three groups, this reducer (0.7X) also flattens the field and controls chromatic aberration.
  • When the Takahashi TOA-35 reducer is used with the TOA-150, it produces 3-micron stars in the center of the field and 6 micron stars at the edge of the field. With the TSA 102mm or 120mm, images are 8 microns & 12 microns, respectively.
  • The camera ring supplied with the TOA-35 reducer is a wide mount 55mm adapter that is used to attach the reducer to a camera.
  • Metal back distance for the TOA-150 version of the TOA-35 is 68.5mm, and it produces an image circle of 44mm.


 Takahashi TOA-150 0.7X Reducer & Wide Camera Mount Set

The ideal design for a reducer is its ability to reduce the f-stop while flattening the field and controlling chromatic aberration. The Takahashi TOA-35 0.07x reducer is configured with 4-elements in three groups and uses low dispersion, high refractive index glass for two of the elements, while reducing the focal length by a factor of 30%.

The Tak 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 when used with the TOA-150. Images sizes for the TSA-102 & 120 are 8 microns at center and 12 microns at the edge. There is also an improvement in the color correction on all models. The 0.7X Reducer is supplied with a wide mount Ø55mm adapter to attach the reducer to the customer's camera.

Takahashi TOA-35 0.7x Reducer Specifications

  • Focal Length (installed on TOA-150): 775mm
  • Focal Length (installed on TSA-102): 575mm
  • Focal Length (installed on TSA-120): 635mm
  • Focal Ratio (installed on TOA-150): f/5.2
  • Focal Ratio (installed on TSA-102): f/5.6
  • Focal Ratio (installed on TSA-120): f/5.3
  • Image Circle (all models): Ø44mm
  • Metal Back Distance (all models): 68.5mm

Image shows both models of the TOA-35 Reducer (TOA-130 & TOA-150/TSA). You will only receive one of them.


Additional Information

Additional Information

Manufacturer Takahashi
Barrel Size Thread-on
Warranty 5 Year Warranty
Included Items

Included Items

  • Takahashi TOA-35 0.7X Reducer
  • Takahashi 55mm Wide Camera Mount Adapter
Questions & Answers

Product Questions

No questions yet. Be the first to ask the question!
Support / Downloads