FOA-60 Ortho Apochromatic Refractor

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Description The FOA-60 is a new compact apochromatic fluorite doublet refractor from Takahashi. The telescope features a 60 mm aperture and a 530 mm focal length. It is also availa ble with a 1.7X extender, which increases the focal length to 901 mm. The version with the 1.7X extender is known as the FOA-60Q. The spacing of the doublet elements is such that the correction of the spherical abberations is similar to that found in the much larger TOA series. This innovative design results in a Strehl ratio in excess of 96% for the base unit and over 99% with the extender. Compact design for relatively long focal length, making it ideal for transport Outstanding visual and photographic performance, providing a 44 mm diameter image circle for full frame imaging Available with a 1.7x extender and a 0.93x flattener Note: FOA-60 Shown. Mount, tripod, tube holder and finder not included. Specifications Telescope FOA-60 FOA-60Q Part Number TFA06010 TFA06100 Aperture 60mm 60mm Resolution 1.93" 1.93" Limiting Magnitude 10.7 10.7 Light Gathering Power 73x 73x Focal Length 530mm 901mm Focal Ratio f/8.3 f/15 Image Circle Diameter 44mm 44mm Optical Type Fluorite Doublet OrthoApochromat Fluorite Doublet OrthoApochromat Tube Diameter 68mm 68mm Tube Length (With Lens hood retracted) --------- -------- Tube Weight --------- -------- Recommended Finder 6x30 6x30 Metal Back Distance --------- -------- FOA-60 Visual System Chart FOA-60 Extender System Chart FOA-60Q System Chart Show more