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The Sky-Watcher GreatStart SW 90AR AZ3 90mm Manual Refractor Telescope offers dramatically increased detail gathering capability combined with ultra high contrast imaging for exquisite planetary, lunar and terrestrial views. The deluxe altazimuth mount and tripod is robust, intuitive to operate and easy to set up and use. The SW 90AR-AZ3 is an excellent telescope for casual astronomy. It is also configured to be a superior land telescope, being supplied with an image erect 45° roof-prism and an 8x20 erect viewfinder.
Deluxe dual slow-motion controls facilitate smooth tracking in each axis. This is one of the most popular telescopes ever offered to the marketplace. The Sky-Watcher SW 90AR-AZ3 offers sufficient resolution for enhanced study of surface phenomenon in the solar-system and additional structural detail in the brighter, more prominent deep-space objects. This telescope will also serve as a high resolution terrestrial telescope for razor sharp views of distant landmarks, nature and people.
As seen through the SW90AR, the pockmarked face of Moon presents a treasure trove of extraterrestrial geographic landscape features. The SW 90AR will deliver breathtaking detail of famous-name high-walled craters and vast flat expanses known as lunar maria (seas). The planet Saturn reveals amazing views of the planet's ring structure and 4-prominent moons. Jupiter's equatorial bands show good detail revealing numerous discontinuities between the bands not visible in smaller aperture telescopes. In deep-space prominent nebulae and globular star clusters take on greater presence revealing themselves as more than just luminous, ghostly apparitions.
Discrete stellar pinpoints manifest themselves to a far greater extent. A number of additional double stars are suitable for study as are satellite transits silhouetted against the surface of gas giants like Jupiter. The air-spaced, achromatic doublet objective lens of the SW90AR-AZ3 is fabricated of Grade-A Crown & Flint glass. Each lens element is precision pitch polished to demanding standards of optical excellence. Each air-to-glass is multicoated with metallic high-transmission optical coatings ensuring the optimum through-put of light. The metal focuser assembly is solid and stable with a mechanically smooth metal rack & pinion focuser.