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-6-Dobsonian-Telescope-with-1.25-Crayford-Focuser-GS580.html


กล้องดูดาวสะท้อน GSO 6" Classic Dobsonian Telescope พร้อม Crayford Focuser GS580


รายละเอียด


คะแนนสินค้า
ผู้ผลิต
จำนวนในสต๊อก
สินค้าหมด
น้ำหนัก
25,000.00 g
ราคาของเรา
฿12,990.00


รายละเอียด


กล้องดูดาวสะท้อน GSO 6" Classic Dobsonian Telescope พร้อม Crayford Focuser 1.25" GS580

GSO 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 ต่างๆอีกหลายอย่างและรองรับอนาคตได้ดีกว่า (focuser แบบ 2" ที่ปรับละเอียดได้, รองรับ eyepiece และอุปกรณ์ ทั้ง 1.25" และ 2" ตั้งแต่ต้นพร้อม tube balancing, มีพัดลมกำจัดกระแสไอร้อนในตัว เป็นต้น)

 

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      

กล้องดูดาวสะท้อน GSO GS580 8-inch Dobsonian

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 GS580 Dobsonian reflector telescope combines powerful 150mm-diameter (6") 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 astro photography.

ขนาดกล้องดูดาว Dobsonian เทียบกับคน

The GSO GS580 houses a big 150mm parabolic mirror with 80% more light grasp than a 4.5" 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 a difraction limited optic. 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 6x30 finderscope

Horizontal and vertical adjustment of the GSO GS580 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. Here, you can adjust for the stiffness in this axis and even lock it. The GSO GS580 Dobsonian telescope comes equipped with a smooth 1.25" craford focuser, unlike rack-and-pinion focusers in scopes in this price range.

กล้องดูดาวสะท้อน GSO GS680 8-inch Dobsonian eyepiece holder tray

It has a removable telescope eyepiece rack (the above 2" eyepiece is not included), a spring tension system to hold scope in position, two Plossl telescope eyepieces , and a nice 6x30 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 GS580 also allows you to calibrate your mirrors to obtain the highest quality images that the telescope is capable of. Use a 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 GS580 telescope which has great reputation for its best-in-class mirrors.

SPECIFICATIONS

Best for viewing Brighter deep sky
Best for imaging Lunar & planetary
User level Beginner
Optical design Reflector
Optical diameter 153mm
Focal length 1200mm
Focal ratio f/8.0
Optics type Parabolic
Eyepieces Super Plossl 9mm, 25mm
Magnification with included eyepieces 48x, 136x
Resolving power 0.76arc*sec
Lowest useful magnification 21x
Highest useful magnification 300x
Highest theoretical magnification 300x
Limiting stellar magnitude 13.5
Optical quality Diffraction limited, 1/12 wave
Finder scope 6x30 fully multicoated achromatic
Focuser 1.25" Crayford
Secondary mirror obstruction 34mm
Secondary mirror obstruction by diameter 23%
Secondary mirror obstruction by area 5%
Mirror coatings/over-coatings Aluminum & Silicon Dioxide (Quartz)
Mount type Dobsonian
Tube material Steel
Tripod material Wood
Length of optical tube 45.5 in. (1156mm)
Weight, optical tube 13.5 lbs. (6.2kg)
Weight, mount/tripod 20.9 lbs. (9.5kg)
Weight, fully assembled 34.4 lbs. (15.6kg)
Additional included accessories Eyepiece rack, 35mm Extension Tube
Warranty Two year

 

References and Downloads

download me I'm usefull GSO 6" Classic Dobsonian Telescop Manual

 

REVIEW 

BBC Sky at Night magazine
by Mark Parrish

BBC Sky at night 2

 

Our rating

BBC Sky at night 4.5 rating 4.5 (review is for the 10" model)

The GSO is a steel-tubed telescope with a large, sturdy base and an appealing price tag. The telescope tube does not come to pieces or collapse down like the others, so it comes in a pretty large box. Constructing the base is straightforward, especially if you have ever built flat-pack furniture.

A small Allen key is provided along with a tiny diagram, so good eyesight plus a screwdriver and 13mm spanner are all that’s required to put it together. The mirror is held in a substantial three-point cell and is well protected from damage and stray light inside the rigid tube. This meant the GSO was well collimated after its journey to us. Adjusting the secondary mirror requires a screwdriver, and although we didn’t like having to hold tools above the primary mirror, collimation was easy to achieve.

To aid mirror cooling, a battery-powered fan is thoughtfully provided.

The shiny silver tube is a little tricky to grasp and we felt that a simple handle would be a thoughtful addition. The mount turns smoothly, thanks to a large roller bearing in the base section and Teflon pads, which support the plastic altitude bearings on either side of the tube. In use, these worked beautifully, with just the right amount of friction generated by the downwards force from two springs that also keep the scope safely secured.

 

Sky at night GSO Dobsonian 10

 

The tube seemed well balanced even when we tried heavier eyepieces than the supplied 32mm wide-field model. The scope could also be re-mounted onto an equatorial mount if you have suitable tube rings.

Like many scopes of this ilk, the GSO comes with an eyepiece and accessory tray. The 2-inch Crayford focuser is very solidly built, with tension and locking screws that functioned very effectively. Brass compression rings are provided in the focuser and the 1.25-inch adaptor to protect your eyepieces. There’s a straight-through 8×50 finderscope held in a spring-loaded holder, which we found easy to adjust. The views through this kind of finderscope are the same way up as the main scope, which you may find convenient.

 

Beehive beauty

Our first view through the 32mm eyepiece was of the Beehive Cluster and we were impressed with the crisp stars and delightful variations of colour. The edge of the field beyond about 70 per cent was less sharp with some signs of coma (distortion of the star shapes), but this did not detract from what was a very enjoyable experience.

We turned towards nearby Mars, which exhibited good colour, but we needed to use shorter focal length eyepieces to magnify it to a reasonable size. This tube provided the best shielding from stray light and the contrast was good enough to pick out the spiral structure of the Whirlpool Galaxy (M51) in a fairly light polluted area.

 
Conclusion
 
Although at times we felt the azimuth bearing was a bit too easy to turn – we knocked the scope off target when changing eyepieces – for simplicity and reliability, this scope ticks all the right boxes.

 

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!