Takahashi FS-60CP 60mm F5.9 355mm Fluorite Apochromatic Refractor OTA

Takahashi released a new variant of the popular 2-group, 2-element fluorite objective telescope FS-60C- the FS-60CP.

The FS-60CP can be used with an ultra-high performance reducer. In order to insert the large diameter lens of this reducer into the draw tube, the 2-inch large focuser and Φ95mm lens barrel have been adopted. The newly released 60CP FU Reducer 0.65X uses fluorite for one of the four elements in the 4-group configuration, and almost completely eliminates the chromatic aberration that could not be corrected by the previous Reducer C0.72X, reducing the chromatic aberration to less than half of what it was before.

The field curvature is also completely flat all the way to the periphery of the full frame, and the RMS-SPOT radius is within 3 microns from the center to the periphery. In addition, the placement of the large diameter lens increases the peripheral illumination, boasting approximately 80% even at the periphery of the full frame.

When used in combination with the 60CP FU Reducer 0.65X, the FS-60CP becomes an ultra-high performance astrograph with a focal length of 230mm F/3.8, it can also be used with a high performance flattener and focal length extender optimized for the FS-60CP such as the FC/FS MFL1.04X and Extender CQ1.7X.

Optical tube only. Telescope rings, dovetail, flattener, reducer and extender are all optional.

Specifications

• Aperture: 60mm
• Focal Length: 355mm
• Focal Ratio: F5.9
• OTA total length: 361mm
• Optical design: Fluorite apochromatic refractor with 2 elements in 2 groups