Description
Including :
tabung optik, mounting ring, aluminum case, finder 9×50, 2″ diagonal, 28mm eyepiece, dan dual speed focuser)
BLACK DIAMOND ED100
Observing with Black Diamond ED100
Fortunate indeed is the amateur astronomer with a Black Diamond ED100mm refractor on a clear night with transparent skies and a stable atmosphere.
Turning the telescope to the Crescent Moon, the Apennine Mountains snap into razor-sharp focus revealing a cornucopia of jagged mountain ridges, canyons, and numerous small craters in ultra high definition. Not far removed, reaching skyward, the crater wall of Archimedes pops into view in bold relief against the smooth flatlands that transverse the distance between it and the Apennine Mountains. This is lunar observing at its best – HD style.
The gas giant Jupiter displays its swirling equatorial bands in high-definition with festoons, and tonality within the bands. The great spot is clearly visible, discreetly contrasted from the surrounding Jovian landscape. Prominent deep-space nebula yield improved definition in gaseous outer extensions.
Stars in globular clusters resolve to pinpoints. This is just the beginning of an incredible journey of
exploration possible with a Black Diamond ED100.
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.
Specification
Optical Design ED Refractor
Aperture 100mm
Focal Length 900 mm
Focal Ratio F/9
Resolving Power 1.15″
Highest Practical Power 200x
Faintest Steller Magnitude 12.7
Focuser diameter 2″
Finderscope 9×50*
Diagonal 2 inch 90º Dieletric Diagonal with 1.25 inch adapter
Eyepiece(s) 2 inch 28mm eyepiece
Tube Weight 3Kgs
Tube Dimension(dia. x length) 10 cm x 92cm
Shipping Weight 12.2kg
Shipping Carton Dimensions 92.5 x 30 x 23 cm3
Tripod Height n/a
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