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About this product
Product Information
The Skywatcher Pro SW 120ED APO 120mm ED Refractor Telescope is coveted for the superb contrast, high-definition and coal-black sky background that make stars appear like diamonds imbedded in black velvet. SW APO refractor utilizes the most modern optical glasses and fabricating techniques to deliver the ultimate in high-fidelity astronomical imaging. Subtle details pop as never seen before in telescopes of lesser optical capability. The additional aperture compared to a 100mm diameter lens provides a dramatic increase in resolution and a heighten sense of seeing lunar and planetary surface phenomenon in seemingly 3D high-definition. In a given aperture size, refractors will always exhibit sharper images than other optical designs because the refractor concentrates more light into the central airy-disk and first diffraction rings. There is no diffraction pattern interference caused by a diagonal mirror, or secondary mirror being suspended in the optical path (central obstruction) as is the case with reflectors. Skywatcher ED-APO refractor provides the finest images obtainable - bar none - in their design class. Skywatcher ED apochromatic refractor delivers dramatic coal-back skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Skywatcher ED-APO refractor is the logical choice as an investment in advanced instrumentation for exceptional viewing or photography. The Skywatcher ED-APO design assures virtual elimination of secondary, residual false color normally present in 2-element achromatic lens designs using Crown and Flint glass. Skywatcher APO refractor utilizes a second lens element made from the mineral fluorite instead of Flint glass. Fluorite, CaF2, is a halide with unique properties and a hardness of only four. It is an exotic and difficult material to fabricate into a lens. Hence the cost of manufacturing a fluorite lens is quite high compared to a Flint lens element, for instance.Product Identifiers
BrandCelestron
MPNS11130
UPC0812556011245
ModelSky-Watcher Pro 120ED APO
eBay Product ID (ePID)115930235
Product Key Features
Mount TypeEquatorial
TypeRefractor
Additional Product Features
Aperture120mm
Lens Size4.7in (120mm)
