About the Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope OTA...
The additional aperture of the Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope provides a dramatic increase in resolution and a heightened sense of seeing lunar and planetary surface phenomenon in seemingly 3D-like high-definition. In this Sky-Watcher Telescope, 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 object''s core.
Each air-to-glass lens surface of this Sky-Watcher Telescope 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. The objective lens cell of the Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope is light-baffled to reject stray, unfocused light. The draw tube is likewise baffled to insure optimum contrast. The Sky-Watcher Telescope tube interior is flat blackened to help prevent unfocused internal light reflections from reaching the focal plane. Combine with a Sky-Watcher Mount for excellence in astrophotography.
Optical focus of the Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope is achieved by means of a mechanically ultra-smooth, backlash-free, precision 2" Dual Speed Crayford Focuser-assembly. This focuser offers fine and ultra-fine focusing adjustments. The Sky-Watcher Telescope 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.
Don'''t forget, we carry plenty of Sky-Watcher Accessories, too! Look for Sky-Watcher Telescope Eyepieces and Sky-Watcher Telescope Filters for visual observers! Astrophotography buffs will appreciate Sky-Watcher Photo Adapters and the Sky-Watcher SynGuider!
Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope OTA Features...
- Diameter/Aperture: 102mm
- Focal Length: 1000mm
- Multi-coated achromatic objective lens
- Aluminum tube
- Dew cap/Sunshade
- Adjustable Objective-lens Cell
- 6x30 finderscope for easy location of objects
- Smooth rack-and-pinion 2" focuser with a 1.25" adapter, accepting both 1.25" and 2" eyepieces
- 28% more light gathering power than 90mm, 112% more than 70mm
- Ideal for high-power study of the moon and planets
- Includes 10 and 25mm eyepieces, diagonal and 6X30 finderscope
Sky-Watcher BK 1021 Black Diamond 102mm Refractor Telescope OTA Specifications...
Optical Design: Achromatic Refractor
Focal Length: 1000mm
Highest Practical Power: 204x
Finder Scope: 6x24*
Focuser Diameter: 2" with 1.25 adapter
Diagonal: 2" 90 deg. Diagonal with 1.25" adapter
Eye Piece: 1.25" Super 25 and 10*
Tube Weight: 3.48 Kgs
Tube Dimensions: 10cm x 94.3cm
Shipping Weight: 10 Kg
Shipping Dimensions: 139x23x27 cm3Sky-Watcher Product Number: 20175.3