EXPLORE SCIENTIFIC Ultra Light Dobsonian 305mm GENERATION II

Ultra Light Dobsonian 254mm GENERATION II - with completely redesigned and improved construction.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.700mmEyepiece 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 mountedSPECIFICATIONS Truss-Dobsonian Telescope in full Aluminium constructionNEW: Slider bearings made from TEFLON und GFK for smooth and precise movementNEW: Improved main mirror cell with completely redesigned mechanicsNEW: Altitude bearings with new designed brake and friction systemNEW: Universal finder slot to enable an easy finder upgradeNEW: Quick-lock fasteners with new springloaded design for comfortable useNEW: Powder-coated yellow altitude wheels to improve durabilityNEW: Laser engraved central mark on main mirrorSCOPE OF DELIVERYTruss Dobsonian TelescopeLED finder with standard finder slotStray light shield for secondary cageMain mirror collimation toolBattery compartment with bag for fansExtension tube for focuserReducer 2"/1.25"Manual

Ultra Light Dobsonian 406mm GENERATION II - with completely redesigned and improved construction. 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 406mm aperture gathers more than 3300-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 550mmx550mmx330mm; Mirrorbox 480mmx480mmx300mm; Trusses approx. 1250mm Eyepiece Height while pointing at zenith approximately 1,63m. 16“ Total net weight: 38,4 kg; 16“ Mirror Box: 23,8kg; 16“ Secondary Cage + Rockerbox: 10,5 kg; 16“ 4 Truss pairs: 2,5kg; 16“ Altitude Wheels: 1,6kg ; 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: Larger feet to improve stability NEW: Universal finder slot to enable an easy finder upgrade NEW: Counter-weight system included - 2 x 1.0 kg 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 DELIVERYTruss Dobsonian TelescopeLED finder with standard finder slotStray light shield for secondary cageMain mirror collimation toolBattery compartment with bag for fansCounter-weights 2 x 1.0 kg Extension tube for focuserReducer 2"/1.25"Manual

The new BRESSER Messier 12" Dobson enhances this well-liked telescope series while providing great portability due to its lightweight fibreglass telescope tube. Despite its low price, it offers a variety of functions as well as quality that you would not find in considerably more expensive devices. Thanks to the powerful telescope aperture of 305 mm, you get significantly more light-gathering capacity than with the smaller models and are therefore not limited to observing the moon and the planets of our solar system - you can already look far out into the universe and observe globular clusters, nebulae and galaxies with even greater brightness. Details become visible in most deep-sky objects: globular clusters are clearly resolved into individual stars and gas nebulae, which can only be guessed at with smaller devices, show structure. The device is unrivalled in its versatility: The excellent large Hexafoc focuser has an aperture of 65 mm - so there is no noticeable obstruction from the focuser tube even with large wide-field eyepieces. Thanks to the large altitude wheels, even these heavier eyepieces are held effortlessly. And if a particularly large number of accessories is attached, such as a binocular attachment, then the entire tube can be moved inside the tube clamps - and everything is balanced again in a flash. The unrivalled rigidity of the focuser makes focusing easy - so photography with this tube is also possible. This is another strength of this universal telescope: if you want to take photos, you can simply unscrew the altitude wheels from the tube and attach it to an equatorial mount using a dovetail bar - so there's nothing standing in the way of astrophotography. An optional 10:1 gear reduction for the focuser is available for the highest demands. Considering that the focuser is the most frequently used part of the telescope, the use of the Hexafoc in this device is a quantum leap for this price range. With the initial equipment, you can start observing immediately - a 6x30 finder and a 25 mm SPL eyepiece are included in the scope of delivery. Various other viewfinder types can also be retrofitted using the 2 new hybrid viewfinder shoes (Art. 0620158) supplied as standard. In addition, the new 12" BRESSER Messier makes it easy to transport the device as compactly as possible - the rocker box can be dismantled in a few simple steps because the parts are assembled with metal quick-release connectors. This quickly turns a bulky rocker box into a handy flat package of individual parts. A telescope whose versatility, performance and user-friendliness set new standards in this price class. Includes a high-quality objective solar filter for safe observation of sunspots, eclipses and planetary transits. A BRESSER premium telescope for night and solar observation. NOTE: Please note that "Newtonian" reflector telescopes are very good for astronomical observations in the starry sky, but are not well suited for nature and landscape observations during the day. We therefore recommend BRESSER refracting telescopes for nature and landscape observations. FEATURESType: Reflector telescope Telescope for night and solar observation Lightweight but very stable GRP telescope tubePrimary mirror diameter: 12" (305 mm) parabolic main mirror Focal length: 1,525 mm Aperture ratio: f/5 Maximum useful magnification: 610x Theor. resolving power: 0.45 arcseconds Easy to balance the tube by sliding it inside the tube rings Visual limiting magnitude: 14.5 mag Tube: GRP tube with adjustable tube rings and aluminium altitude bearings Focuser: 2.5" HEXAFOC focuser with 2" and 1 1/4" adapter Shifting-free focusing even with heavy accessories Secondary mirror bracket: very thin 4-arm steel spider Tube rings and altitude wheels made from aluminumDifferent sized adjustment and counter screws on the mirror cell Use of the optics also on EQ mounts (with optional dovetail bar) Mount: Dobsonian system Dismantlable rocker box Accessory tray for one 2" and two 1 1/4" eyepieces, mounted on the front side Eyepiece: BRESSER Super Plössl 25 mm (1 1/4") Viewfinder: 6x30 viewfinderHybrid viewfinder shoes (Art. 0620158) included (2 pcs)Tube weight without accessories: 16 kgTube weight with accessories: 18.9 kg Rocker box weight: 14.8 kg Total weight: 33.7 kg Overall dimensions: 60 x 60 x 163 cm SCOPE OF DELIVERY Tube with Newtonian optics Aperture solar filter 6x30 viewfinder Hybrid viewfinder shoes (2 pcs)25 mm Super-Plössl eyepiece (Ø 31.7 mm / 1.25") 1 extension tube 37.5 mm for 2.5" Hexafoc 1 eyepiece adapter Ø 31.7 to 50.8 mm 2 tube rings 2 altitude wheels Rocker box with 2 base plates and mounting material (disassembled for self-assembly) Shipping dimensions Box 1: 150 x 53 x 50 cm - 24 kg Shipping dimensions Box 2: 61 x 61 x 24 cm - 17 kg

NEW - now including a high-quality lens solar filter for the safe observation of sunspots, eclipses and planetary transits. A high quality telescope for night and solar observation.The BRESSER Messier 10 "Dobsonian is something very special. Despite the low price, it offers a variety of functions and quality that are sometimes unavailable in considerably more expensive telescopes. With its 254 mm diameter optics, this telescope is not limited to solar system observation of the Moon and brighter planets - you can also observe far out into the universe and see globular clusters, nebulae and galaxies. Details become visible in most deep-sky objects: globular clusters are broken down into individual stars and nebulae, which are only hinted at in smaller scopes, show considerable structure. This Dobsonian is unsurpassed in versatility within its price range: the excellent, large Hexafoc focuser has an opening of 65 mm - so even with large wide-field eyepieces, there is no noticeable vignetting from the eyepiece extension tube. The large elevation wheels also hold the telescope level with just the right amount of "sticktion", even when heavier eyepieces are used. And when a lot of heavier accessories are attached, such as the Bresser Binoviewer attachment, then the entire telescope tube can be moved within the tube rings - and everything is balanced again in a flash. The unsurpassed rigidity of the focuser makes it easy to focus - photography with this OTA is no problem either as the supplied extension tube for the focuser can be removed and a camera easily bought to a prime focus position. This is another strength of this universal telescope: if you want to take photos, you can simply unscrew the elevation wheels from the tube and place it on an equatorial mount with a standard dovetail rail - other rival Dobsonians do not offer this level of flexibility or pathway to more expansive astrophotography use. An optional dual speed 10:1 gear reduction for the focuser is available for those who need extra fine control of focus. If you consider that the focuser is the telescope part that is used most often, the supply of the Hexafoc on this telescope is a quantum leap for this price range.With the initial equipment you can observe immediately - a 6x30 viewfinder and a 25mm SPL eyepiece are included within the package.  If you want to transport the device as compactly as possible, it is easy with the new 10 "BRESSER Messier - the rocker box can be dismantled in a few simple steps, as the parts are assembled with metal quick-release connectors. A bulky rocker box quickly becomes a handy flat package of boards within a few minutes. This is a telescope whose versatility, performance and ease of use set new standards in this price range.Please note that while Newtonian type reflecting telescopes are very good for astronomical observations in the night sky, they not well-suited for observing nature and landscapes during the day. We therefore recommend BRESSER refracting or Cassegrain designs of telescopes for additional nature and landscape observations.PROPERTIESType: mirror telescopeMirror diameter: 254mm / focal length: 1270mm / F / 5Maximum useful magnification: 508 timesTelescope for night and solar observation2.5" HEXAFOC focuserMain mirror made of special glass, with low thermal expansionHassle-free focusing, even with heavy accessoriesEasy to move tubeDismountable rocker boxTube mounting on altitude bikes using clampsUse of the optics on other mounts as wellAdjustment and construction screws of different sizesBase diameter 54cmWhat's IncludedTube with Newtonian opticsFull aperture Solar filter6x30 viewfinder25mm Super Plössl eyepiece (Ø 31.7 mm / 1.25 ")1 extension tube 37.5mm for 2.5 " Hexafoc1 eyepiece adapter 1.25" to 2"/31.7 to 50.8 mm2 Tube Rings2 Altitude support wheelsRocker box with 2 base plates and mounting material (disassembled for self-assembly)Shipping dimensions Box1: 134x44x44cm - 19.0kgShipping dimensions Box2: 61x61x24cm - 17.0kg

Maksutov Newton MN-152 David H. Levy Comet Hunter Telescope Highly corrected optic for wide-field observation and astrophotography. Developed in collaboration with the famous "comet hunter" David H. Levy. The Maksutov-Newton system does have some pros and cons respectively to the classical newtonian design. Apart from the higher price the main disadvantage is the higher weight - the thick corrector lens at the front is the cause for this. The main advantage of the Maksutov-Newton compared to the classical newton is the sharpness of the field of view. Classical newtonian telescopes do show a sharp pinpoint star image only at the middle of the field of view - outside the optical axis they have a dominant abberation, the so called coma. This is inherent in the newtonian design, and therefore valid for all newtonian telescopes of all brands and not caused by manufacturing tolerances. Coma distorts the star image - the pinpoint star shows a tail, just like a small comet. This decreases sharpness and contrast considerably. The Maksutov-Newton shows a much sharper star image - for most applications the coma is not visible. This results in a high contrast image all over the field of view - for visual observations and for astrophotography with DSLRs alike. This makes the Maksutov-Newton a ideal all-purpose telescope, that is able to show a sharp field without the need for additional correctors. SCOPE OF DELIVERY Optical Tube Carbon fiber with 2’’ focuser and reduction 10:1 Carbon dew shield with dust cap Tube rings with dovetail Explore Scientific 52° LER Eyepiece 30mm 8x50 finder scope with illumination Eyepiece Barrel diameter: 2’’ and 1.25’’ Universal 44mm Dovetail plate with stainless steel rail (fits LXD75/Great Polaris/EQ5) Instruction manual SPECIFICATIONS Overall length including dew shield: 825mm Net weight including tube rings, handle, dew shield and finderscope: 7,9kg

Ultra Light Dobsonian 500mm GENERATION II - telescope mechanics handcrafted in HUNGARY and GERMANY 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 (part No. 0510330) . The ideal workhorse for the deep-sky enthusiast. A telescope with 500mm aperture gathers more than 5100-times more light than the naked eye. Details on planetary surfaces stand out even to unexperienced observers, and countless deep-sky objects show details and some color. Bright globular clusters are resolved down to the core and the view of the lunar terminator will provide a unforgettable experience. The fast 20’’ f3.6 main mirror as well as the large 120mm secondary mirror are made of high quality quartz material, so the cooling time is reduced to a minimum and the Dobson is quickly ready for use. Every main mirror is delivered with an individual optical test certificate, which guarantees the highest capacity. A laser engraved center mark of the main mirror allows easy adjustment. The optical surface has a high-quality aluminum silvering with 94% reflectivity and an extremely resistant quartz protection layer. The mirror overcomes frequently occurring dew fogging and cleanups without any damages and guarantees a long service life. A complete redesign of this Dobson was necessary to ensure the significantly increased requirements to stiffness and load bearing capacity of the optical components. All connections of the tube structure were made in the TIG welding process and no rivets and screws were used. This has made it possible for us to produce this 20’’ light weight Dobson so unbelievably stiff in spite of the low weight - a noticeably good quality which is searching for its match. The production of almost all mechanical components is carried out by our partners in Hungary and the final assembly of the optics and subsequent quality control takes place in Rhede, Germany. The equipment details of the smaller Dobson models, which have been popular for years, have been taken over and even extended considerably. First of all, of course, the very good decomposability and transportability should be mentioned. Set-up and dismantling can be carried out without tools. The main and secondary mirrors are adjustable during the observation and only two adjusting screws have to be moved. Thanks to the use of precision ball-heads in the main mirror cell and a precision hinge for secondary mirror suppport, the adjustment is absolutely easy and guarantees excellent stability. All connecting parts of the tube trusses now consist of CNC machined aluminum and are attached by stainless steel dowel screws. The secondary mirror can now also be adjusted by the adjusting screws in the direction of the optical axis. The tried and tested 2.5’’ HEXAFOC focuser with 1:10 fine adjustment has been used for years - this allows vignetting-free observation despite the fast aperture ratio. A second 40° displaced installed mounting plate with a viewfinder shoe allows the rotation of the tube top in combination with a favorable position of the viewfinder tube or the mounting of an additional TELRAD viewfinder. The 6 supporting feet underneath the rockerbox offer a perfect stability and guarantee a smooth tracking in azimuth. Four smaller fans are installed in the side of the mirror box as well as a large fan is installed under the main mirror. This allows an even quicker adaptation to the ambient temperature and reduces the tube seeing (boundary layer removal). The lateral altitude wheels can now be stowed comfortably in the foam layers of the mirror box. Last but not least another gimmick: The optical tube and the mirror cell are designed to use also on heavy equatorial mounts. Dimensions for mobile use: DIMS total: 680x680x1790mm; Rockerbox 678mmx678mmx347mm; Mirrorbox 590mmx590mmx361mm; Trusses approx. 1084mm; Truss diameter: 25mm; Eyepiece height while pointing at zenith approximately 1,63m; 20’’ Total net weight: 53 kg; 20’’ Mirror Box + Altitude wheels: 35,8kg; 20’’ Secondary Cage: 3,8kg; Rockerbox: 10,6 kg; 20’’ 4 Truss pairs: 2,8kg; 20’’ Primary mirror: 20kg SPECIFICATIONS Truss-Dobsonian telescope in full Aluminium construction Handcrafted in HUNGARY and GERMANY Fast 20’’ f3.6 optics with 1800mm focal length Large 120mm secondary mirror (short axis) Quarz primary- and secondary mirror set Laser engraved central mark on primary mirror Eyepiece height while pointing at zenith approximately 1,63m Full welded rigid telescope structure - no rivets and no screws Telescope tube and rockerbox powder-coated Collimation while observing with the delivered tooling DeLuxe 2,5’’ HEXAFOC focuser with 1:10 gear-reduction 8x50 finder scope with red illuminated reticle Slider bearings made from TEFLON und GRP for smooth and precise movement Improved primary mirror cell with completely redesigned mechanics High precision hinge system for secondary mirror holder Secondary mirror holder with adjustment mechnism along the optical axis 6 larger feet to improve stability Counter-weights (4 x 1.0 kg) included 2 universal finder slots to enable an easy finder position Quick-lock fasteners with new springloaded design for comfortable use Large powder-coated yellow altitude wheels for smooth tracking Altitude wheels can be stored in the mirror box 5 cooling fans are speeding up the cool-down time SCOPE OF DELIVERY Truss Dobsonian Telescope Individual optical test report for primary mirror 8x50 finder with red illuminated reticle Stray light shield for secondary cage Primary mirror collimation tool Battery compartment with bag for fans Extension tube for focuser Reducer 2’’/1.25’’ Manual SHIPPING DIMENSION - truck shipment only in order to guarantee a save transport: BOX1: 600x600x380 approx. 44 kg ; BOX2: 690x690x330 approx. 17 kg ; BOX3: 150x150x1150 approx. 4 kg

NEW - now including a high-quality aperture Solar-filter for safe observation of sunspots, eclipses and planet transits. Great telescope for night and solar observation.The MESSIER MCX-127 telescope is your own small observatory with GoTo computer control. Easy to operate, easy to transport and universally use.  Observe moon, planets, galaxies and nebulae through the proven BRESSER Maksutov-Cassegrain optics. The main features of this optics are a sharp and high-contrast image, as well as the very compact and sealed tube design. An all-round telescope for all fast spotting lovers ! Goto systems play an important role in the world of amateur astronomy as they ensure that users spend less time searching for celestrial objects and more time observing and photographing. The BRESSER Messier GoTo control, allows you to operate your telescope with the included computer handbox. After entering the basic data such as date, time and location, at least 1 known reference star is approached and confirmed. Afterwards, you can choose your favourite objects from the integrated database and let the MCX telescope move to and track them automatically. It couldn't be simpler! One of the outstanding features of the MCX telescopes is the very solid fork mount made of die-cast aluminium and the universal field tripod made of stainless steel. Both guarantee a safe stand and as little unwanted vibrations as possible during observation. In addition, the drives in both axes are equipped with precision ball bearings and precision worm gears made of steel and brass. This ensures smooth and quiet star tracking. Adapt your smartphone camera directly behind the SPL26mm eyepiece using the included smartphone holder or mount your camera on the M35 threaded connector and take astro photos of the moon and planets. The 90° flip mirror at the back of the telescope allows a quick and comfortable change between using an eyepiece or a camera.  You'll be amazed at what this MCX telescope can do with little effort.When it comes to tracking the stars with a telescope or camera, there is nothing comparable to the precision of a German equatorial or parallactic mount. It is important to follow the objects as precise as possible when they rise in the east and sink in the west. For observers it is very easy to keep their celestial object in the middle of the eyepiece for a longer time with a German equatorial/parallactic mount. This possibility of setup  (EQ mode) is already included in your new MCX telescope. The so-called polar wedge on the tripod head can be tilted accordingly and adjusted to the latitude of your location. You can therefore quickly switch between these two types of installation (AZ/EQ) - without having to buy extra accessories! Also a fast use of the MCX telescope without tripod only as a table device is possible !  This telescope combines so many good characteristics that the purchase is really worthwhile. You will be inspired! FEATURES Universal and compact entry-level telescope with GoTo function Easy operation and transport High-resolution and proven BRESSER Maksutov-Cassegrain optics Aperture diameter: 127mm , focal length 1900mm FMC fully coated optics for a brighter image Solid die-cast aluminium fork mounting with drive motors in both axes Proven Goto control for navigation in the starry sky Computer hand box with very large and illuminated display Multilingual menu navigation in DE, GB, FR, ES, IT Sturdy stainless steel tripod with polar wedge (AZ+EQ mode possible) Can also be used without a tripod as a table-top unit Flip mirror 90° - quick change between eyepiece and camera possible Battery compartment integrated in the base for 8 x AA batteries (Batt. not included) Integrated circular bubble for easy leveling Enlarged primary mirror (138mm) for a brighter image Precise worm gears made of steel/brass in both axes Manual gear clamps in both axes Smartphone holder included for photography through the telescope LED red dot finder with CR-2032 battery included BRESSER Super Plössl eyepiece 26mm (1.25") included (73x) Eyepiece shaft diameter: 31.7mm (1.25") Camera connection thread: M35 x 1 mm External connection for 12 Volt power supply: Yes Adjustable working height on tripod: 110 - 160cm Recommended magnifications: 36x - 204x Telescope for night and solar observationSCOPE OF DELIVERY Optical MCX Tube in Fork Mount GoTo Computer Handbox with Hand Strap Field tripod with polar wedge AZ/EQ Smartphone holder for photography through the telescope BRESSER Super Plössl eyepiece 26mm (1.25") LED red dot finderAperture solar-filterObjective dust capInstruction manual