ThaiExcite

ThaiExcite
88/41 Kanlapapruek Road, Bangkae, Bangkae, 10160, Bangkok, ประเทศไทย
ติดต่อสอบถาม: 081-239-3299
อีเมล์: info@thaiexcite.com


URL: http://www.thaiexcite.com/GSO-12-Dobsonian-Telescope-with-2-Crayford-Focuser-GS980-SKU8304D12F51.html


กล้องดูดาวสะท้อน GSO 16" Truss Dobsonian Telescope พร้อม Dual-Speed Crayford Focuser แบบ 2" GS990


รายละเอียด


คะแนนสินค้า
ผู้ผลิต
จำนวนในสต๊อก
สินค้าหมด
น้ำหนัก
95,000.00 g
ราคาทั่วไป
฿79,900.00
ราคาของเรา
฿69,900.00 (บันทึก 13%)


รายละเอียด


กล้องดูดาวสะท้อน GSO 16" Truss Dobsonian Telescope พร้อม Dual-Speed Crayford Focuser แบบ 2" GS990

โปรดทราบ: กล้องอาจแตกต่างจากภาพในรายละเอียดปลีกย่อย เช่นสีของฐาน ลูกบิด เป็นต้น

                 GSO GS990 16-inch Dobsonian Telescope white

NEW!  Tube Balance System and Altitude Clutch with sealed altitude ball bearing:

กล้องดูดาวสะท้อน GSO GS680 8-inch Dobsonian tension and balancing system

 

สามารถอ่านรีวิวของกล้องรุ่นนี้ได้จาก: GSO GS990 Truss Dobsonian Telescope Review (ภาษาอังกฤษ)

 

The GSO GS990 Dobsonian is a user-friendly telescope for the serious amateur who wants serious deep-sky light-gathering. It shows you faint deep space objects that are simply invisible in smaller scopes. With a visual limiting magnitude of 15.7, the GSO GS990 is ideal for observing faint nebulas, galaxies, and star clusters from a dark sky site – all the faint fuzzies outside the solar system that fascinate us.  At Thai Excite, a Dobsonian is no dead-end-street. We offer all possible optional equipment like tripods and mounts, dozens of eyepieces, and even equipment for astro photography.

 

               /Truss Tube Dobsonian size comparison

 

The GSO Dobsonian line is particular model serves a very clear purpose, to offer a large aperture and an excellent image quality at reasonable cost. This 16" truss Dobsonian adds lightweight and portability to these advantages. Set-up is easy by inserting the truss tube onto the rocker box and you're ready to navigates through the night sky by manually moving the tube up or down, or side to side.

If you are using a heavy eyepiece, the new Tube Balancing System helps to balance the weight of the scope. The aluminium side bearing can be tightened for a higher friction. If you would like to install an heavy camera, the side bearing could be moved by a total 25mm along the tube.

All GSO dobsonian use optical quality BK7 glass, cooling fans built into the rear cell to decrease cooling times, also all dobs use a roller bearing on the azimuth surface providing dozens of support points for smooth swivel motion. The deluxe model comes with 2" Micro 10:1 Crayford style focuser and 1.25" adapter.

Simply-made, but rock stable. The GS990 16” Truss Dobsonian reflector will reward you with bright and faint deep space and solar system views and years of trouble-free observing enjoyment.

  

SPECIFICATIONS

Best for viewing Fainter Deep Sky Objects
Best for imaging Lunar & planetary
User level Advanced
Optical design Reflector
Optical diameter 406mm
Focal length 1800mm
Focal ratio f/4.5
Optics type Parabolic
Glass material Low thermal expansion glass
Eyepieces Super Plossl 9mm, SuperView 30mm
Magnification with included eyepieces 60x, 200x
Resolving power 0.29arc*sec
Lowest useful magnification 58x
Highest theoretical magnification 800x
Limiting stellar magnitude 15.7
Optical quality Diffraction limited, 1/12 wave
Finder scope 8x50 fully multicoated achromatic
Focuser 2" Precision Micro 10:1 Crayford
Secondary mirror obstruction 91mm
Secondary mirror obstruction by diameter 22%
Secondary mirror obstruction by area 5%
Mirror coatings/over-coatings Aluminum & Silicon Dioxide (Quartz)
Mount type Dobsonian
Bearing Material Metal Ball Bearing
Tube material Steel
Tripod material Wood
Length of optical tube 57 in. (1450mm)
Weight, optical tube 90 lbs. (41kg)
Weight, mount/tripod 105 lbs. (48kg)
Weight, fully assembled 195 lbs. (89kg)
Additional included accessories Eyepiece rack, Moon filter, 35mm extension tube, 1.25" Eyepiece adapter
Warranty One year

 

GSO is a leader in optical telescopes and accessories and their products have been sold for years by the "Big Three" (Meade, Celestron and Orion) under their own brand names. GSO telescopes and accessories are also sold under different names world-wide; Zhumell (USA), Apertura (USA), TPO (USA), Teleskop Service (Germany), Sky Optic (France), Antares (Canada), Astronz (New Zealand), and more than a dozen more brands too many to name. GSO is known for their high consistency in quality control, low defect rate, and their Taiwanese-based manufacturing scores closer to Japan in quality than other telescope manufacturers which mostly manfacture thier scopes in Mainland China. Give these telescopes a try - you will not be disappointed!