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URL: http://www.thaiexcite.com/Sky-Watcher-BK1021-4-f-10-Refractor-OTA.html

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กระบอกกล้องดูดาวแบบหักเห Sky-Watcher BK1021 4" f/10 Refractor OTA

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รายละเอียด

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กระบอกกล้องดูดาวแบบหักเห Sky-Watcher BK1021 4" f/10 Refractor OTA 

• 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

 

All Sky-Watcher refractors come with muliti-coated objective lens for maximum light transmillion. Refractor telescopes are excellent for Lunar and Planetary viewing as they offer very crisp and sharp images. 

 

Note: OTA only. EQ3 mountand tripod for illustration only

The Sky-Watcher BK1021 series uses two-element, air-spaced, multi-coated objective achromatic refractor tubes. They are truly outstanding, high-performance, high-resolution instruments manufactured to extremely high standards of optical and mechanical precision. With their long focal lenghs and breathtaking, diffraction limited optical performance, they are ideal for the detailed high-power study of the Moon, Planetary Surfaces and other objects in our solar system, giving crisp contrasty images. These telescope packages will stand you in great stead for a lifetime of serious astronomical viewing.

 

In the Box:

- Telescope Tube
- 6x30 Finderscope and Bracket
- 2" 90-degree Diagonal
- 2x  1.25" SP eyepieces (10mm, 25mm)

 

SPECIFICATIONS

Optical Design	Achromatic Refractor
Optical Diameter	102mm
Focal Length	1000mm
F/Ratio	F/9.8
Highest Practical Power	204x
Faintest Steller Magnitude	12.7
Finder Scope	6x30*
Focuser Diameter	2"
Diagnol	2" 90 deg. Diagonal with 1.25" adapter
Eyepieces	1.25" Super 25mm and 10mm
Tube Weight	3.48 Kgs

 

SUPPORT DOCUMENTS  

Manuals: -

 

 

 

About Sky-Watcher 

Sky-Watcher was launched in 1999 featuring a modest line of Newtonian and refractor optical tubes, with distribution in Europe and Asia. In 2000, Sky-Watcher released their first series of Dobsonian telescopes, and two years later answered the rising popularity of digital SLRs with their first version of the famed German Equatorial Mount, the EQ6. Today, with a full product line that includes Dobsonians, APO refractors, EQ mounts, and photography products, Sky-Watcher has grown into the most popular telescope brand worldwide.