Dobsonian telescopes:

BRESSER Messier 8" Dobsonian The BRESSER Messier 8" dobsonian is simply a breakthrough. Despite of its low price this telesccope offers a versatility and quality rivaling a lot more expensive telecopes. The optical diameter of 203mm (8") does not restrict your observations on solar system objects like the moon or the planets - you can reach farther into the sky and explore globular and open clusters, nebulae and galaxies. With that telescope those objects are beginning to show structures: globular clusters are no longer only fuzzy blobs, but are resolved into masses of individual stars. Nebulae, that can only be barely detected in smaller scopes, reveal structures within. The telescope is setting a new standard in versatility: the excellent Hexafoc focuser boosts a free diameter of 65mm (2,5") so that you do not have vignetting in big widefield eyepieces that is caused by smaller focuser barrels. The big altitude wheels handle those big, heavy eyepieces without problems - and when you intend to load even more (like a binocular viewer with two eyepieces) then you can move the tube in its tube rings and achieve balance within seconds. The excellent rigidity of the focuser makes focusing a snap - even for astrophotography. This is another virtue of this highly versatile telescope system: you can remove the altitude wheels from the tube rings, attach a dovetail and use the optical tube on a equatorial mount for astrophotography - in minutes. The focuser is handling even heavy cameras tilt and shifting-free. You are extremely demanding in your image sharpness? No problem - with the optional 10:1 gear reduction sharp images are easy. If you consider, that the focuser is that part of the telescope that is used most often, you will recognize the quantum leap this Hexafoc represents in a telescope of this price range. With the included standard accessories (LED-finder and 25mm SPL-eyepiece) the telescope is ready for observing. If you need to transport or store the telescope as compact as possible you will like this: the rocker box of the 8" BRESSER Messier assembles and disassembles extremely easy and fast due to the use of metal standard furniture fasteners. So you can transform the bulky rocker box into a handy flat package of boards. This telescope is setting a new standard in usability, versatility and performance in its price class. Newton optics with parabolic primary mirror made from H-PZ33 low expansion glass material 2.5" HEX focuser with rack & pinion drive Large altitude wheels provide smooth and precise movement even at high magnifications Red dot finder and SPL 25mm eyepiece included 6-point flotation system mirror cell for the for primary maximizes optical performance Tube rings facilitate the use of the optics on equatorial mounts The parts or the rocker-box are connected with metal furniture fasteners for easy assembly and dissasembly Diffraction limited optics: Strehl > 0,8 FEATURES primary mirror diameter: 203 mm focal length: 1218 mm 2,5" HEXAFOC focus primary mirror out of special-purpose glass with little thermal expansion shifting-free focusing, even with heavy accessories easy to move the tube dismountable rocker box optics can be attached to other mountings differently sized adjusting- and lock-screws SCOPE OF DELIVERY newtonian reflector LED viewfinder 25mm SuperPloessl eyepiece (Ø 31,7 mm / 1,25") 1 extension shell 37,5mm for 2.5" Hexafoc 1 eyepiece adapter Ø 31,7 to 50,8 mm 2 tube clamps 2 altitude wheels 1 rockerbox with 2 ground boards and assembly material Specifications: Type of telescope: Dobson Tube material: Stel Aperture: 203 mm Focal ratio: f/6 Secondary diameter: 57mm Focal length: 1218 mm Mirror material: Special low expansion H-PZ33 Secondary material: Borosilikat-Glas Focuser: Excellent 2,5" Hexafoc Focuser with possibility to upgrade to a 10:1 reduction Connection to eyepiece: 2" / with adapter 1 1/4" Viewfinder: LED Viewfinder Tube weight: ca. 25.3 lb

Item condition: new and original packed

Omegon Dobson telescope Push+ N 203/1000 Your smartphone phone and this telescope are now 'best friends Experience a whole new feel to exploring the night sky with this Omegon 8 inch Dobsonian telescope together with the Push+ object locator. This telescope can find any planet or deep sky object in the twinkling of an eye! This is made possible by the intelligent Push+ object locator - the telescope communicates instantaneously with your smartphone! The advantages in a nutshell finding newly invented - you can now located any object in the night sky using the Push+ object locator and your smartphone built-in digital encoder - your telescope immediately knows where it is pointing. The software allows you follow every step and locate objects in a jiffy. Bluetooth 2.0 provides a wireless connection to your smartphone - with a range of 10 meters smartphone holder - suitable for all smartphones with a width of up to 75mm software - take control of your telescope with the SkySafari® 4 Plus app for Android, or use programs such as Cartes du Ciel® or Stellarium® with your PC GP receiver - mounts any telescope with a GP rail The optics - high contrast and sharp images thanks to the parabolic mirror Good optics are the heart of any telescope - the 203mm parabolic main mirror here provides a sharp image right out to the edge of the field of view, for a visual experience where you might forget that you are still on Earth and are only 'travelling' with your eyes. A journey into the past - getting into the world of galaxies 203mm of aperture lets you enter a whole new domain - that of the 'deep sky objects', or DSOs. You can observe globular clusters thousands of lightyears away, sparkling like a million diamonds in your telescope. Or even galaxies - 'islands of stars' like our Milky Way. You can observe the following objects with the telescope globular clusters planetary nebulae galaxies open clusters hydrogen nebulae planets, comets and much, much more. Omegon Dobsonians open a new door to the universe - the main mirror in this telescope gathers 75% more light than a 150mm telescope. You can explore hundreds of objects in the night sky. Digital Encoder - a 'satnav' for your telescope Know where you are - the digital encoders on the azimuth and elevation axes tell you just where you are in the night sky at all times. This technology, which is used on large equatorial mounts, is now also employed with this Dobson telescope. But all this would be nothing without a good controller - and this you already have! Smartphone - your way to the stars Your Android smartphone now allows you to keep track of everything yourself - the Sky Safari® 4 Plus astronomy app for Android systems turns your phone into a control centre for your telescope. The coloured display on your smartphone shows the current region of the night sky and allows you to select an object you wish to observe. You can then move the telescope to the target in a jiffy - as you move the telescope in the direction required, you will see a crosshair moving across the star chart. With the right app it's easy You can purchase the SkySafari® 4 Plus app at Google Play. Push+ will not work with Apple iPhones or iPads (iOS operating system) - a separate version for these is due to be released in 2017 Is there also another way that doesn't need a smartphone? Yes, there is! - you can use Stellarium® or Cartes du Ciel® planetarium software. Simply install one of these free programs on your laptop - and off you go, wirelessly, to the stars. Whether smartphone or PC - a Bluetooth 2.0 connection is used to communicate with the telescope. GP receiver The rocker box has a receiver for Vixen style GP rails. This means you can connect most telescopes with GP rails to the rocker box and benefit from the Push+ system. This works best with Newtonian reflector telescopes of up to 8 inches in diameter. Ensure your exploration of the night sky is always successful with Push+. Note: smartphone and App are not included. Our expert comment: The Push+ object locator is also available as a mount (rocker box) with GP receiver for your own telescope OTA (for up to 8 inches aperture). In the box: Tube Rockerbox 2x eyepieces 10mm, 25mm Kellner Red dot finder

Item condition: new and original packed

Skywatcher - Skyliner-250PX CLASSIC Dobson

Item condition: new and original packed

Dobsonian telescopes offer an incredible aperture-to-price ratio. The Dobsonian mount, popularized by John Dobson in the 1970.s, is a simple and efficient method of mounting a Newtonian reflector, based on the alt-azimuth principal. Fast and easy to set up, the Dobsonian mount consists of a box-type mounting which allows the telescope to pivot in altitude, while the box itself is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and use frictional materials which allow it to be moved easily when nudged but to stay in position when not. The mount is designed to be driven by hand as opposed to slow motion controls. Sky-Watcher Dobsonians provide excellent all round performance for the observation the moon and planets and deep-sky objects such as galaxies and nebulae. Characteristics: Aperture 254mm, focal lenght 1200mm, f/4.7 Central obstruction appr. 27% 2" focuser with reduction 1¼" Resolving power: 0.59" Retractable upper tube unit Parabolic mirror and secondary mirror coated with Radiant™ Aluminum Quartz (RAQ™) coating, with up to 94% reflectivity and optimum durability and long-term stability Total weight appr. 44kgs Delivery: 10" Dobsonian telescope w/ Flex-Tube system 2" focuser with reduction 1¼" 9x50 finder with dovetail connector 25mm & 10mm 1¼" Super eyepieces

Item condition: new, but not original packed

Skywatcher Dobson Skyliner 16" F/4,4

Item condition: new and original packed

GSO - Dobsonian GSD 200c

Item condition: new and original packed