The Black Diamond ED80 is a
modestly wide-field telescope offering bright, wide swaths of sky in a
single view. It is well suited for wide-field astronomical observation
of prominent nebulae, star clusters, and galaxies from a dark-sky
location, or can be used as an astrograph for sky photography. As a
terrestrial spotting scope or telephoto lens, the Black Diamond ED80’s
performance is absolutely superb.
Ultra high contrast allows the
subtlest of details to be easily scrutinized under conditions of good
seeing. The petite silhouette of the Black Diamond ED80 makes for an
excellent compact, portable telescope that travels light and fits a
small space. At about 50-power structural detail becomes apparent
in our solar system’s gas giants like Saturn and Jupiter. The Moon also
exhibits striking crater detail along the lunar terminator.
Schott Glass Used in Selected Models for Crown Element. Black
Diamond ED80 SCHOTT benefit from the inclusion of Schott glass being
used for the positive front Crown element in the objective. Schott is
the recognized world leader in glass utilized for precision optical
lens systems, including medical instrumentation, and famous-brand
camera lenses. While Schott glass is only used in selected models, all
other models utilize top-quality, Grade-A glass from perhaps less
famous but, nonetheless, highly respected, high-quality glass
manufacturers
Metallic High-Transmission Lens Coatings. Each
air-to-glass lens surface has exotic anti-reflection metallic coatings
applied to ensure optimum light through-put of approaching 99.5%. The
proprietary Sky-Watcher “Metallic High-Transmission Coatings” (MHC) are
the finest photon anti-rejection coatings in their class.
Light-Baffled Optical Systems. The
objective lens cell is light-baffled to reject stray, unfocused light.
The draw tube is likewise baffled to insure optimum contrast. The tube
interior is flat blackened to help prevent unfocused internal light
reflections from reaching the focal plane.
Precision 2” Crayford Focuser is Standard. Optical
focus is achieved by means of a mechanically ultra-smooth,
backlash-free, precision 2” Crayford rack & pinion
focuser-assembly. This focuser offers fine and ultra-fine focusing
adjustments.
Tube Materials. The optical tube material is
rolled steel, powder-coated reflective gloss black with gold fleck
accent. The front and back cells are cast-aluminum painted white, or
black.
Telescope Tube Attachment Hardware: The optical tube
comes with attachment hardware that allows it to be securely fastened
to any Sky-Watcher mount. The quick-release tube rings provided with
Black Diamond ED80 are cast-aluminum, painted white.
Included Components for Selected Models*
Black
Diamond ED80 is supplied with backlash-free 2” Crayford focusers. Black
Diamond ED80 is also supplied with 8x50mm viewfinder with bracket; 2”
dielectric diagonal; two 1.25” LE (Long Eye Relief) eyepieces (LE20mm
and LE5mm); 1.25” focuser adaptor; and tube ring attachment hardware
for mounting to any Sky-Watcher, or other compatible mounts.
This product was added to our catalog on Saturday 07 March, 2009.