Takahashi FOA-60Q Ortho Apochromatic Refractor

The included 1.7x extender takes the FOA-60 to another level, as well as letter.  This combination is referred to as the FOA-60Q.  You will simply call it a joy to use. 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. This is the "Q" version, so it comes standardard with the 1.7X extender.  The extender increases the focal length to 901 mm. The real beauty of this system is the availablity to make changes on the go as the scope is really two scopes in one.   Without extender the scope is 530mm f/8.8 With 1.7x extender the scope is 901mm f/15 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. Tech Details:  Aperture 60mm Focal Length 530mm and 901mm Focal Ratio f/8.8 and f/15 Heaviest Single Component 6.6 pounds Weight 6.6 pounds