| BLACK DIAMOND ED120
Observing with Black Diamond ED120
The additional aperture of this telescope provides a dramatic increase in resolution and a heighten sense of seeing lunar and planetary surface phenomenon in seemingly 3D-like high-definition. Tight globular star clusters like M13 in Constellation Hercules appear like a beehive of crisp stellar pin points, star upon thousands of stars deep into the objects core. In Deep-space, rich aggregates of stars within Galaxies, Nebulas, and open clusters appear brilliant contrasted against a very dark velvet black background. The wispy, delicate, featherlike structure of dust lanes and extension of glowing gasses can be seen reaching out far beyond the objects core.
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 ED120 SCHOTT are cast-aluminum, painted white.
Included Components for Selected Models*
Black Diamond ED120 SCHOTT is supplied with backlash-free 2 Crayford focusers and quality foam-lined metal carrying cases as standard equipment. Black Diamond ED120 SCHOTT 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.
*Components included may be different in your area. Contact your local distributor for details.
Recommend for: ASTROPHOTOGRAPHY
| Optical Design |
ED Refractor |
| Lens Material |
|
| Diameter |
120mm |
| Focal Length |
900mm |
| Scondary Mirror Diameter |
n/a |
| F/ratio |
F/7.5 |
| Highest Practical Power |
240x |
| Faintest Steller Magnitude |
13.1 |
| Resoving Power |
0.96 |
| Finderscope |
8X50 Right Angle or 9x50* |
| Focuser diameter |
2 |
| Diagonal |
2 inch 90 Dieletric Diagonal with 1.25 inch adapter |
| Eyepiece(s) |
2 inch 28mm eyepiece |
| Mount Type |
n/a |
| Slow-motion Control |
n/a |
| Counterweight(s) |
n/a |
| Piggyback Bracket |
YES |
| Accessory Tray |
n/a |
| Ground Board Diameter |
n/a |
| Ground Board Weight(s) |
n/a |
| Motor Drive |
n/a |
| Go-to |
n/a |
| Tube Weight |
5.13kg |
| Tube Dimension(dia. x length) |
10 cm x 62cm |
| Tripod Height |
n/a |
| Shipping Weight |
14.5kg |
| Shipping Carton Dimensions
|
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