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-8-Classic-Dobsonian-Telescope-with-2-Crayford-Focuser-GS200C.html

กล้องดูดาวสะท้อน GSO 8" Classic Dobsonian Telescope พร้อม Crayford Focuser 2"

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ผู้ผลิต
GSO
จำนวนในสต๊อก
สินค้าหมด
น้ำหนัก
31,000.00 g
ราคาของเรา
฿16,990.00

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กล้องดูดาวสะท้อน GSO 8" Classic Dobsonian Telescope พร้อม Crayford Focuser 2"

GSO รุ่น Classic Dobsonian ถือเป็นรุ่นแนะนำสำหรับมือใหม่ที่งบจำกัด: การออกแบบของกล้อง GSO จะมีสไตร์เรียบๆ แบบ no-frills (ออกแบบเรียบง่าย เน้นใช้งาน) ส่วนวัสดุ งานประกอบ และการควบคุมคุณภาพอยู่ในเกณฑ์ดีมาก คุณภาพของภาพที่ได้ไม่แพ้ Big 3 ในอเมริกาด้วยราคาที่คุ้มค่ากว่า แต่ถ้าสามารถเพิ่มงบอีกสักหน่อย ขอแนะนำรุ่น GS-680 ขนาด 8" จะเพิ่ม feature ต่างๆอีกหลายอย่างและรองรับอนาคตและอุปกรณ์ต่อพ่วง เช่นกล้องถ่ายรูป ได้ละเอียดแข็งแรงกว่า (focuser แบบ 2" ที่ปรับละเอียดได้, พร้อมระบบ tube balancing, ระบบกันฝุ่นเข้า เป็นต้น) สามารถดูตารางเปรียบเทียบได้ที่ด้านล่าง

 

BBC Sky at Night magazine rating

BBC Sky at night 4.5 rating 4.5 out of 5 stars!  (review is for the 10" model)

BBC Sky at night

"..we were impressed with the crisp stars and delightful variations of colour. For simplicity and reliability, this scope ticks all the right boxes.."  - BBC Sky at Night magazine      

 gso-dobson-8-zoll-1000

A Dobsonian telescope offers the best optical performance for your money. 90% of the value are concentrated in the optical tube assembly (mirror cell, focuser etc.). So you get much aperture for an affordable price. The GSO Classic Dobsonian reflector telescope combines powerful 200mm-diameter (8") reflecting optics with point-and-view simplicity in one surprisingly portable package.  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 astrophotography.

 

ขนาดกล้องดูดาว Dobsonian เทียบกับคน

 

The GSO Classic Dobsonian houses a big 200mm parabolic mirror with 78% more light grasp than a 6" mirror, for brighter, more detailed views of night sky curiosities. Due to the long focal length, the secondary mirror can be kept small making this telescope for a lunar and planetary specialist. The very high contrast leads to detail visibility near the physical limitations. Of course, deep sky observations are also pleasing. Pinpoint stars over the entire field of view make observing galaxies and nebulae an aesthetic delight. GSO guarantees 1/12 wave difraction limited optics. The streamlined Dobsonian telescope base offers unflinching stability yet easy portability. While the telescope may appear bulky, it is actually quite easily portable, since it can be separated into two main sections: the optical tube, and the Dobsonian base.

 

GSO 8x50 Finderscope with bracket on G680

 

Horizontal and vertical adjustment of the GSO Classic Dobsonian telescope is very easy. It has gliding bearings in both axes. The telescope remains stable - just point, release and observe. Vertical adjustment is aided by the "tension control" system (see picture above). Here, you can adjust for the stiffness in this axis and even lock it.

GSO 2-inch-crayford

The GSO 8" Classic Dobsonian telescope comes equipped with a smooth 2" craford focuser, unlike rack-and-pinion focusers in scopes in this price range.  A central part of the telescope is the good 2" Crayford focuser with many advantages:
- Much smoother focus motion compared with simpler focusers.
- Secure and scratch-free grip on the eyepieces through use of a brass compression ring (both 1.25" and 2")
- No image shift. This means that the object will remain precisely in position while you focus. Simpler focusers tend to be shifted a little bit out of alignment, resulting in a relative movement of the object. This somewhat annoying effect does not occur in the Crayford focuser.
- No play when you reverse the focusing direction. The focuser will reverse the direction in which it moves instantaneously when you change the direction in which you turn the focus knobs.

 

GSO Classic Dobsonian Eyepiece rack

 

It has a removable telescope eyepiece rack, a spring tension system to hold scope in position, two Plossl telescope eyepieces , and a nice 8x50 correct-image finder scope. With accessories like these included, you're ready for night after night of family stargazing fun right out of the box!

 

 กล้องดูดาวสะท้อน GSO GS580 8-inch Dobsonian secondary mirror spider vane

The GSO Classic Dobsonian also allows you to calibrate your mirrors to obtain the highest quality images that the telescope is capable of. Use any philips-head (cross-head) screw driver to keep both primary and secondary mirrors in alignment. Such screws makes it easy to get the best out of your GSO Classic Dobsonian telescope which has great reputation for its best-in-class mirrors.

 

Primary Mirror Cooling Fan: Until a mirror is properly cooled down it will create currents of warm air that will deteriorate the image - no matter which mirror substrate is used. Only after the mirror has cooled down this effect stops. The cooling fan reduces the cooling down time.

 

gso-cooling-fan-540

 

Instruction Manaul can be found at: https://www.tejraj.com/pdf/GS680-C.pdf

 

SPECIFICATIONS 

COMPARISON
GSO 8" Professional Dobsonian - vs - GSO 8" Classic Dobsonian
  GSO 8" Pro Dobsonian GSO 8" Classic Dobsonian
ACTUAL IMAGE GSO 8" Professional Dobsonian GSO 8" Nightwatch Dobsonian
Place of Manufacturing - TAIWAN Taiwan Taiwan
Newtonian Reflecting Telescope ✓ ✓
8 inch Parabolic 1/12 wave ✓ ✓
diffraction limited / BK7 ✓ ✓
94% enhanced coating ✓ ✓
Diameter - 203mm ✓ ✓
Focal Length - 1200mm ✓ ✓
Focal Ratio - F/ 6 ✓ ✓
Faintest Steller Mag - 14.2 ✓ ✓
Resolving Power - 0.57 Arc - Seconds ✓ ✓
2" Precission Crayford Style Focuser ✓ ✓
Dual-Speed 10:1 ratio Micor Focuser ✓  
1.25” eyepiece adapter ✓ ✓
Premium Widefield SP 30mm (2") ✓  
Premium Plossl 25mm (1.25")   ✓
Premium Plossl 9mm (1.25") ✓ ✓
8x50mm Multi-coated Achromatic Finder ✓ ✓
Dobsonian Wooden Base ✓ ✓
Altitude Ball Bearings ✓  
Altitude Clutch ✓  
Azimuth Roller Bearing ✓  
Tube Balancing System ✓  
Cooling fan for 'Thermal Equilibrium' ✓ ✓
Eyepiece Tray ✓ ✓
Total Height 52 inch 52 inch
Tube Length 45.25 inch 45.25 inch
Stand Height 27 inch 27 inch
Base Diameter 20 inch 20 inch
Shipping Weight Tube Net Weight 13Kg Tube Net Weight 11Kg
Gross weight 15 Kg Gross weight 13 Kg
Shipping Carton Dimension Tube 32 x 40 x 128 cm3 Tube 32 x 40 x 128 cm3
Stand 14 x 60 x 70 cm3 Stand 15 x 64 x 64 cm3

 

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!