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3609 EUR
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price without VAT: 2934 EUR
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The Sky-Watcher GT telescope series on the Dobsonian mount are high-precision optical instruments equipped with a built-in GOTO SynScan automatic guidance system. Thanks to their powerful aperture, telescopes of this type are perfect for visual observations of all objects in the starry sky, and thanks to the extendable construction of the tube, the telescope - despite its powerful mirror - can fit in any passenger car and be taken to our favorite observation spot.
The telescope tube is transported as a whole - there is no need to disassemble the tube into parts. The entire telescope is transported in two parts - the folded (pushed) telescope tube and the Dobsonian box mount. Such a telescope, after being extended, may only require gentle collimation. The telescope is easier to operate thanks to the patented Sky-Watcher pressure adjustment in the height axis.
Telescopes with the GOTO system are equipped with the SynScan AZ controller, which allows for extremely simple setting of the telescope in any direction of the sky and automatic searching of objects from the database built into the control unit. The user-friendly menu allows for quick selection of one of the 42,900 objects saved in the system memory, and after selection, the guiding system will automatically set the selected object in the telescope's field of view. Thanks to the use of special encoders, it is possible to manually rotate the telescope without the need to re-set the GOTO system. The telescope is an excellent combination of the advantages of large Dobsonians with the convenience of using a GOTO telescope. Observation capabilities of the telescope A telescope with a primary mirror diameter of 16 inches (i.e. over 40 cm) is practically the largest piece of equipment available to amateur astronomy enthusiasts in the world of amateur instruments - larger instruments are practically exclusively stationary, require a permanent observation site and a dome, and are usually beyond the financial reach of many.
A telescope this large allows for the most advanced visual observations available to amateur observers. It is difficult to list all the observation possibilities - so let's list only the most important ones:
• craters on the moon, shadows on impact craters, incredible detail and plasticity • phases of Mercury and Venus, Venus belts with good atmospheric stability • ice caps on Mars are perfectly visible (it is worth buying red, orange and yellow filters) • the structure of Jupiter's belts - both "tropical" and circumpolar, the Great Red Spot, four Jupiter moons, the shadows of the moons on the surface of Jupiter's disk • Saturn's ring with the Cassini and Encke divisions, belts, the ring's shadow on the planet's disk • the shields of Uranus and Neptune, certain structures in the atmosphere of these planets • asteroids • comets - icy blocks that travel through our Solar System - the telescope can serve as a powerful "comet finder" • hundreds of double, multiple and variable stars, including observations of scientific value • several thousand Deep Sky objects, including all from Messier's catalogue, as well as most of NGC, IC and Caldwell's catalogues; it is difficult to count them, because it is not about quantity , but about quality of obtained images - thus, there will be visible open clusters, such as the Manger in Cancer, hi chi in Perseus or Ptolemy's Cluster in Scorpius, globular clusters (M13 broken down to 1/2 diameter into individual stars, or M53 in Coma Berenices), gas-dust nebulae (perfectly visible structure of M42 in Orion, North America in Cygnus), galaxies (M31 in Andromeda with two satellite galaxies, i.e. M32 and M110), as well as Veil in Cygnus or famous Ring (M57) in Lyra and many, many more.
Moon planets star clusters nebulae planes
| • Optical system: | Newton's reflector | | • Mirror diameter: | 406mm | | • Lens focal length: | 1800mm | | • Light Force: | 1/4,4 | | • Precision of mirror manufacturing: | 1/8λ | | • Mirror glass type: | Pyrex | | • Theoretical angular resolution: | 0.3" | | • Maximum usable magnification: | 800x | | • Extended tube length: | about 168.5 cm | | • Length of the folded tube (pushed together): | 107 cm | | • Outer diameter of the tube: | about 55 cm | | • Tube weight: | 30.5 kg | | • Base diameter: | 84.5 cm | | • Dimensions of the telescope packed in transport boxes (3 boxes): | - tube: 120 x 61 x 64, 23 kg net / 31 kg gross - main mirror: 54 x 54 x 29 cm, 11 kg net / 14 kg gross - Dobsonian mount: 103 x 95 x 36 cm, 53 kg net / 68 kg gross
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• power supply: 10 to 15V, 1A, 2.1mm plug (standard container for 8x R20) • drive: DC servo motors • Motor encoder resolution: 1620000 counts per revolution • Axis encoder resolution: 11748 counts per revolution • speeds: 1x, 2x, 8x, 16x, 32x, 200x, 400x, 600x, 800x, 1000x • tracking modes: sidereal, lunar, solar • tracking method: azimuthal, two axes • setting modes: to the brightest star, to 2 stars • object database: 25 user-defined, Messier, NGC, IC catalogs, part of the SAO catalog, 42,900 objects in total • setting accuracy: up to 5 arc minutes
The set includes the following accessories: • 2" diameter Crayford focuser with 1.25" reduction and T2 thread • SP 25mm and 10mm glasses • Dobsonian mount with GOTO SynScan AZ system (40,000 objects in the database) • 9x50 finder with crosshair 60 months (5 years) for mechanics and 2 years for electronics (manufacturer's warranty)












This device focuses a large amount of light. Looking directly at the Sun through this device can cause partial or complete loss of vision. For observing the Sun, we recommend the safest method of eyepiece projection, i.e. projecting the image of our daytime star's disk onto a sheet of paper.
READ : BEFORE YOU BUY A TELESCOPE - BUYERS' GUIDE
[PDF]
READ : A QUICK GUIDE TO CLEANING OPTICS
[PDF]
READ : HOW TO CONNECT A COMPACT CAMERA TO A TELESCOPIC
[PDF]
READ : HOW TO CONNECT A DSLR TO A TELESCOPE
[PDF]
>> FREQUENTLY ASKED QUESTIONS << (click to expand the list of questions) Question : Can a beginner assemble and operate this telescope?
Answer: We deliver a comprehensive manual in Polish to each telescope, which will tell the user how to assemble the telescope and how to use it during observations. Customers usually have no problems assembling the telescope, as long as they read the manual. A separate issue is searching for objects in the sky during the first observations. That is why we recommend educational items from the Publications section (especially maps and astronomical guides) and Stellarium: an excellent, free "planetarium" program in Polish, ideal for learning the sky and planning observations.
 ENTER AND DOWNLOAD STELLARIUM FOR FREE Question : Can I attach a DSLR camera to this telescope? What accessories are needed?
Answer: Of course YES, you can connect a DSLR camera to this or any other telescope. You will need a projection adapter and a T2 ring appropriate for your DSLR camera (there are 5 DSLR camera mount standards: Canon EOS, Nikon, Olympus E, Petax K and Sony Alfa / Minolta AF). These adapters are available in our online store in the astronomy accessories section. Question : Can I attach a compact camera to this telescope? What accessories are needed?
Answer: Of course you can. You can find a suitable shelf for compact cameras in the astronomy accessories section of our online store ( universal adapter for digital compact cameras ). Question : Can a HYBRID camera (a large compact SLR-sized camera) be attached to this telescope? What accessories are needed?
Answer: You can try this, but it is not recommended. So-called hybrids are not very good for astrophotography, because they do not have the option of taking off the lens like a SLR, and they are large and have large lenses, which means that shelf systems cannot be used, and the vignetting is high, because you cannot get the lens very close to the last optical surface of the telescope eyepiece. We recommend buying a SLR or a cheap compact. Question : What else is worth buying for this telescope?
Answer: The presented telescope is a complete set ready to conduct astronomical observations on the first clear night. As an addition, we recommend educational publications first, which will make both using the telescope and the observations themselves more conscious and easier. In addition, it is worth considering buying planetary contrast filters and solar filter foils (available in the astronomical accessories section). Question : Can this telescope be used as a spotting scope/nature scope?
Answer: NO. This reflecting telescope (Newtonian) is not suitable for observing terrestrial objects, because it produces an image that is upside down ("green down") and there are no good optical methods to "restore" it. However, this does not interfere with astronomical observations, because for a terrestrial observer the concept of up and down makes sense on Earth, but does not exist in space. Newtonian telescopes, on the other hand, work quite well for photographing terrestrial objects and observing airplanes at cruising altitudes. Question : Can I observe both planets and nebulae with this telescope? Is this a city or country telescope?
Answer: All offered telescopes allow you to observe the planets of the Solar System (all of them) and nebulae, or more precisely galaxies, star clusters, emission nebulae, etc. A separate issue is the clarity of the details of the planets' surfaces and the number and brightness of nebulous objects. A smaller telescope has its own sky, a large one - its own, but we can always count on wonderful observations of the structures of the Moon's surface, the phases of Mercury and Venus, the disk of Mars, the belts on Jupiter and the four Galilean moons of Jupiter, the ring of Saturn and the disks of Uranus and Neptune. The brightest nebulae, such as the Great Andromeda Nebula M31, the Great Orion Nebula M42 or the globular cluster in Hercules M13 always delight, even a small telescope will show several dozen of the most beautiful nebulae. Finally, a telescope equipped with a solar filter can be used to observe spots on the Sun's disk. There is no division into city and country telescopes, rather there are recommendations: if the telescope will be used mainly in the city, in conditions of city light pollution and high atmospheric instability (buildings give off heat at night, heating the air and the image starts to "float" like on hot days over a hot road!), then an achromatic refractor (lens telescope) or Maksutov (meniscus - mirror) is recommended. Our target will be mainly planets and compact objects. In turn, under pitch-black, country skies, it is worth using a Newtonian system telescope (mirror) with the largest possible mirror we can afford, because we can count on a more stable and clearer atmosphere and great possibilities for observing nebulae. Question : Does this telescope include a tripod/mount?
Answer: Of course YES, every telescope has a mount unless it is described as OTA ( Optical Tube Assembly ). Question : You write that the telescope comes with assembly, does that mean you will come and assemble the telescope for me?
Answer: Mounting does not mean mounting , but a system for mounting the telescope tube. It must be understood that we never conduct observations "by hand" with an astronomical telescope - we must mount the telescope on a system that allows its precise setting to any region of the sky. In the case of a Dobsonian mount , the telescope's optical tube is mounted on a kind of box that acts as an azimuth mount , i.e. it has two perpendicular axes: an altitude axis ("up - down") and an azimuth axis ("left - right"). Question : I see that this telescope is quite low. How/in what position do you observe with it?
Answer: Dobsonian telescopes have an eyepiece - the place where we look / "put our eye" - often relatively low, especially when the mirror diameter does not exceed 35 centimeters. Nevertheless, observation is possible in a standing position, and the most comfortable is a sitting position - for this purpose it is worth getting a stool with adjustable height or even a folding fishing chair. The lying position is rather not practiced :-)
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