Modern 254mm truss-dobsonian telescope in full aluminium construction
- Modern secondary mechanics - the collimation is easily achieved without tools and keeps collimation well during transports
- Modern primary mirror cell - the telescope mirror can be collimated from the front while looking through the eyepiece and is supported by a modern floatation system with radial roller bearin
- Large altitude wheels provide smooth and precise movement even at high magnifications
- Secondary unit and altitude wheels fit into the rocker box and the mirror box includes a cover for transport so that the whole telescope breaks down into only two aluminium cases and the tru
- Extremely high rigidity construction
- Dew-resistant because of aluminium construction: no deforming press board due to the exclusive use of metals
- Lightweight: the aluminium profile/aluminium plate construction reduces the weight to about half of the mass of most press board designs of this price range
- Two large radial fans for fast thermal equilibrium
- Scope of delivery: Telescope, Manual, Reducer 2"/1.25", Red dot finder, Stray light shield for secondary cage, Main mirror collimation tool, Battery compartment with bag for fans, Extension
£521.42*
% £899.00* (42% saved)Currently unavailable
Product number:
R12866
Former product no.:
R0116925
Note: Our item numbers have been updated.
You can continue to search for products using either the previous or the new item number.
EAN:
4007922028927
WEEE-Reg.-Nr.:
DE 34323861
Product information "EXPLORE SCIENTIFIC Ultra Light Dobsonian 254mm GENERATION II (Refurbished)"
NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.
No telescope type has influenced amateur astronomy as radically as the dobsonian telescope. Before the introduction of this telescope type by John Dobson the vast majority of amateur telescopes were small inadequate refractors on shaky mounts - just good enough to show the polar regions on mars or the rings of Saturn. Bigger telescopes, like the Schmidt-Cassegrain telescopes, were restricted to the relatively small group of amateurs that could afford them.The brilliant combination of simple - but effective - mechanics and the largest aperture available led to a worldwide triumph of this concept. No other telescope type offers you so much light for your money as a good dobson. We have taken the motto "held together by gravity and driven by yoghurt power" and offer a modern version of the classic - designed by amateur astronomers for amateur astronomers. Despite its large aperture the telescope can be transported easily even in small cars and is assembled within minutes without tools. The construction was optimized for maximum rigidity with a minimum of mass. The combination of big altitude wheels and a optimized aluminium-sandwich construction allows for small movements even at high magnifications. The focus position is already positioned to accept our coma-corrector. The ideal workhorse for the deep-sky enthusiast. A telescope with 254mm aperture gathers more than 1300-times more light than the naked eye. Details on planetary surfaces stand out even to unexperienced observers, and countless deep-sky objects show details. Bright globular clusters are resolved down to the core and the view of the lunar terminator will provide a unforgettable experience.
Dimensions for mobile use: Rockerbox 395mmx395mmx310mm; Mirrorbox 330mmx330mmx295mm; Trusses approx.700mm
Eyepiece Height while pointing at zenith approximately 1,15m; 10“ Net total weight: 26,4 kg; 10“ Mirror Box: 14 kg; 10“ Secondary cage +Rockerbox: 9,7kg; 10“ 4 Pairs of trusses: 1,5kg; 10“ Altitude Wheels: 1,2kg ; Focuser thread: M54 x 0.75 mm.Backfocus: 45mm behind the 2" eyepiece holder. 35mm when the 1.25" adapter is mounted
SPECIFICATIONS
- Truss-Dobsonian Telescope in full Aluminium construction
- NEW:Slider bearings made from TEFLON und GFK for smooth and precise movement
- NEW:Improved main mirror cell with completely redesigned mechanics
- NEW:Altitude bearings with new designed brake and friction system
- NEW:Universal finder slot to enable an easy finder upgrade
- NEW:Quick-lock fasteners with new springloaded design for comfortable use
- NEW:Powder-coated yellow altitude wheels to improve durability
- NEW:Laser engraved central mark on main mirror
SCOPE OF DELIVERY
- Truss Dobsonian Telescope
- LED finder with standard finder slot
- Stray light shield for secondary cage
- Main mirror collimation tool
- Battery compartment with bag for fans
- Extension tube for focuser
- Reducer 2"/1.25"
- Manual
Product and safety instructions
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
Contact:
www.bresser.de
www.bresser.de
Warning notes
- General safety instructions DANGER Risk of eye injuries! Never look directly at the sun or near the sun through this device. There is a risk of blindness! Children should only use the device under supervision. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! FIRE HAZARD! Do not expose the device especially the lenses to direct sunlight! The light concentration could cause fires. RISK of material damage! Do not dismantle the device! In case of a defect, please contact your dealer. They will contact the service center and may send the device in for repair. Do not expose the device to temperatures above 60°C!
- Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
- Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
- Do not expose the device to high temperatures.
