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The Sky-Watcher 70mm (2.8") f/5and 80mm (3.1") telescopes are
two-element, air-spaced, fully multi- coatedobjective, refractors.
The 80mm f5 is a well- proven performer which gives"rich- field"
views of star fields, clusters, nebulae, bright galaxies,
planets,the Moon and (with correct filtering or by projection) the
Sun, as well asexcellent terrestrial views. Both telescopes give
images which are crisp andwith very little chromatic aberration. One of the greatest assets of these solidly built telescopes is
portability.The light-weight optical tubes (1.25kg; 2.8lbs for the
70mm and 1.5kg; 3.3lbsfor the 80mm), and the compressed lengths of
about 380mm (15") and 480mm (18")make them "take it with me"
telescopes. Their optical tubes can be adapted tofit into an
airline carry-on bag, or into a hiker's backpack. Whether they
areto be used as a beginner's telescope, a "rich-field", a backup,
a guide scope ora travelling telescope, the very reasonable prices
make them choices toseriously consider. They are quick and easy to set up and the low- maintenance,
enclosed opticscome fully collimated from the factory. Alignment of
the finderscope and polaralignment of the optional equatorial mount
are all that are needed to startviewing. The optical tube
assemblies are held firmly by hinged, felt-lined "tubemounting
rings" which allow easy installation and optical tube rotation
andbalancing. Mounting one of these telescopes on the supplied
aluminum alt-azimuth mount or a photographic tripod is quickand
simple with the supplied "multi-function mount plate". Both telescopes perform well as a fixed aperture lenses for
bothastrophotography and terrestrial photography. The "fast" focal
ratios, combinedwith today's high speed films, make them useful for
capturing lunar and solareclipses as well as nature photographs.
With a suitable T-adapter, a camera canbe connected directly to the
T-mount thread on the eyepiece holder and asupplied 60mm (2.4")
extension tube allows closer focussing for terrestrialphotography.
- Recommend forEASY TRANSPOTATION
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