Takahashi FRC-300 O.T.A.




The FRC-300 is the newest flat field Ritchey-Chretien produced by Takahashi.

This newest flat field astrograph is designed to produce a flat 90 degree image circle for medium format photography or CCD imagery. This image circle can be used with the largest available CCD cameras for many years to come. The f/7.8 focal ratio enables the imager to produce images of smaller objects with amazing sharpness and contrast.

The pin-point stars 10 microns at the edge and 2348mm focal length produce a field, free of astigmatism or coma, will allow the FRC to resolve star clusters and fine detail in galaxies and nebulae across the entire 90mm circle.

The temperature compensated secondary holder insures pinpoint stars during long exposures.

The dedicated f/5.9 reducer produces a 36mm flat circle for CCD imaging at this shorter focal length.

Price includes built-in temperature compensation device and tube holder.

SPECIFICATIONS for the FRC-300 (Tube assembly only)

Optical SystemCorrected Flat-field Ritchey-Chretien
UsesCCD or medium format astrophotography
Focal Ratiof/7.8
Image Circle90mm
Focal Length2348mm [effective]
Focal Length (with reducer)1770mm
Focal Ratio (with reducer)f/5.9
Image Circle (with reducer)36mm
Tube Diameter324mm [12.76in.]
Tube Length1030mm [40.55in.]
Finder Scope7x50 6.3
Tube Weight 30kgs / 66lbs


Add to Cart:

  • Model: TRC0300
  • Shipping Weight: 66lbs
  • Manufactured by: Takahashi

This product was added to our catalog on Tuesday 21 June, 2005.