The SkyWatcher Esprit 150/1050 triplet apochromatic refractor is in every respect in the premium category. Its optical and mount design is first class, providing unparalleled contrast and sharpness of image. No aberration occurs even at extreme magnifications.If the atmosphere permits, you can go beyond the theoretical maximum magnification and the image will not fall apart. Its performance puts Esprit apo's in the league of market-leading competitors (e.g. Takahashi, Astrophysics, TEC).
The 150/1050 Esprit tube is a planet-killer in the making, but its large aperture also makes it an excellent instrument for observing deep sky objects. You can dissect globular clusters, see details in the brightest galaxies and gas clouds, and dissect close binaries. Saturn's ring with Cassini is an unforgettable sight, while Jupiter's clouds offer a detailed view of the Great Red Spot and the many tiny eddies. The Moon is almost three-dimensional.
The soul of the Esprit apochromats is the triple (triplet) air slit objective lens, made from FPL-53 and Schott glass materials, which has SkyWatcher's most advanced anti-reflection coating. The two-piece field flattener designed for the lens, which screws onto the tube, provides a 43 mm distortion-free, flat field of view, making the telescope suitable for use with full frame (24x36) DSLR and CCD cameras. At the end of the corrector is an M48 thread for camera attachment. The 9x50 amici prismatic finder scope makes it easy to find objects.
The rotatable 3" 1:10 focusing eyepiece allows for extremely fine, precise focusing and produces vignetting-free images. In-tube knife-edge blends significantly reduce light scattering, resulting in a highly contrasty image. The long dew cap also protects the lens in humid weather. The prismatic lens is Losmandy standard, so it can be easily mounted on the new HEQ-5 and larger mounts.
