Ultra Light 20'' Dobson 500mm f/3.6 Generation II Telescope

Description: 20'' Dobson 500mm f/3.6 Generation II Ultra Light Telescope - Explore Scientific 20'' Dobson 500mm f/3.6 Generation II Ultra Light Telescope - Explore Scientific Key Features: 500mm f/3.6 Modern Lattice Dobsonian Dobsonian armor tube in all aluminum construction. Handmade in HUNGARY and GERMANY. Quartz main and secondary mirrors with proof certificate. Low viewing height of only 1.63 m at zenith Extremely high construction stiffness. Adjustable main mirror during observation. Very portable thanks to its compact carrying dimensions. Fully welded tube frame - no rivets or screws HEXAFOC DeLuxe 2.5′′ Focus with 1:10 Fine Fit Large powder-coated height wheels allow for smooth movement 500mm GENERATION II Ultralight Dobsonian : a handmade telescope mechanism in HUNGARY and GERMANY No type of telescope has changed amateur astronomy like Dobsonian telescopes. Before John Dobson introduced the Dobson telescope, the vast majority of amateur telescopes consisted of small refracting telescopes with primitive mechanics, enough to see the polar caps of Mars or the rings of Saturn. Larger telescopes, such as the Schmidt-Cassegrains, were reserved for a wealthy clientele. The ingenious combination of simple yet effective mechanics with the widest possible aperture has given the Dobson telescope a unique triumph worldwide. Nowhere else do you get so much light for your money as with a good dobsonian. We take the principle ""gravity maintained and force driven by yogurt"" very seriously and create a modern Dobsonian telescope with a brand new design and spacer tube . The fact that the device can be disassembled means that this great device can be easily transported even in small cars; it can be mounted completely toolless in just a few minutes . The entire construction has been optimized for maximum stiffness and minimum weight. Combining large lift wheels with optimized aluminum sandwich construction allows for the finest correction movements with the biggest magnifications. The focusing position has already been ready for use with our comma concealer (Item # 0510330) . The ideal workhorse for the deep sky observer. A device with a 500mm diameter mirror captures more than 5,100 times more light than the human eye . Details of planets become visible even to untrained observers, and countless deep sky objects show structures and even colors . Bright star clusters resolve to the core and the terminator's view on the moon becomes a unforgettable experience . The fast 20′′ f3.6 primary mirror and the large 120mm secondary mirrors are made of quartz material high quality. This reduces cooling time to a minimum and the Dobsonian is quickly ready for use. Each primary mirror comes with a individual optics. test certificate which you can use Best performance guaranteed. A center mark of the laser-engraved primary mirror makes adjustment easy. All optical surfaces have a high quality aluminum mirror coating with 94% reflectivity and an extremely durable quartz protective layer.. Therefore, the main mirror can withstand the frequent buildup of dew and the need to clean it from time to time without damage and ensures a long service life. To meet the significantly higher stiffness and load capacity requirements to accommodate optical components, a brand new design of this Dobsonian. All connections in the tube structure were made by TIG welding and no rivets or screws were used. So we made this lightweight 20′′ Dobsonian so incredibly rigid to torsion despite its low weight: remarkably good and unsurpassed quality. Almost all mechanical components are manufactured by our partners in Hungary and the final assembly of optics plus final quality control takes place in Germany, at the headquarters in Rhede . The equipment details of smaller, popular Dobson models for years have been adopted and even expanded considerably. The first thing to mention is, of course, the very good disassembly and transportability Assembly and disassembly can be done without tools The main and secondary mirrors can be adjusted during observation and you only need to move two adjustment screws By using precision ball heads in the primary mirror cell and an precision hinge for secondary mirror mounting , the fit works absolutely smooth and ensures excellent fit stability . All tubular mount connecting parts are now made of CNC-milled aluminum and are fastened seamlessly by stainless steel screws. The secondary mirror can now also be adjusted in the direction of the optical shaft using adjustment screws. The 2.5′′ HEXAFOC focuser with 1:10 fine fit, proven for years, allowing for observation without vignetting despite the fast aperture ratio. A second mounting plate with 40° displaced viewfinder shoe allows The top of the tube should be rotated in combination with a favorable viewfinder position or the installation of a additional TELRAD viewfinder . The 6 feet below the tilt box offer the best stability and ensure smooth azimuth tracking. The 4 smallest fans mounted on the side of the mirror box and a large fan installed under the main mirror allow for even more Faster adaptation to room temperature and reduced visibility in the beam path (removal of the boundary layer). Side lift wheels can now be comfortably stored in mirror case foam inserts. Last but not least, a special trick: the optical tube that includes the mirror cell is mechanically designed to work on a heavy equatorial mount! Transport dimensions for mobile use: Rockerbox 678mmx678mmx347mm; Mirror box 590mmx590mmx361mm; Bar length approximately 1084mm; View height in zenith position approximately 1.63m; Total weight 20”: 53kg; 20′′ mirror box with wheels height: 35.8kg; Top 20′′′ with secondary mirror: 3.8kg; Bottom of rocker box: 10.6kg; 20′′ 4 pairs of struts: 2.8kg; Primary mirror weight: 20kg Features: Dobsonian armor tube in all aluminum construction. Handmade in HUNGARY and GERMANY. Fast 20′′ f3.6 optics with 1800mm focal length Large 120mm secondary mirror. Quartz main and secondary mirrors with proof certificate. Laser engraved primary mirror center mark Low viewing height of only 1.63 m at zenith Extremely high construction stiffness. Fully welded tube frame - no rivets or screws Tube and rocker box completely powder coated Adjustable main mirror during observation. HEXAFOC DeLuxe 2.5′′ Focus with 1:10 Fine Fit 8×50 Finder Viewfinder with Illuminated Sight TEFLON and GRP smooth bearings, resulting in very sensitive tracking Enhanced primary mirror cell with precise adjustment mechanics Precision hinge for secondary mirror holder. Secondary mirror mount with adjustment mechanism along optical shaft. 6 feet large for optimal stability 4 x 1.0 kg compensating weights included in delivery 2 mounting plates with universal viewfinder shoe Quick closures with spring elements for comfortable handling 5 fans for quick temperature adjustment Large powder-coated height wheels allow for smooth positioning Lift wheels can be stored in the mirror box. Delivery content: Dobsonian Gitterrohr 20"" Telescope Test certificate for primary mirrors. 8×50 viewfinder with viewfinder stand Parasitic light protection for secondary mirror cage Balance weight 1.0 kg (4 pieces) Adjustment tool for primary mirrors. Battery box with fan pocket. Focus Extension Case 2′′ to 1.25′′ Reducer Adapter instruction manual Delivery in 3 packages only possible by courier to ensure safe transportation: BOX1: 600x600x380 approximately 44 kg; BOX2: 690x690x330 approximately 17 kg; BOX3: 150x150x1150 approximately 4 kg Alt-azimuth / RA delay: Teflon Lift orientation / DEC: Teflon Finder: 8 x 50 mm - illuminated Scope: Deep Sky Observation, Planetary Observation Color: black Optical design: The Newton Reflecting Telescope Product family: Reflector telescope Primary mirror material: quartz Secondary mirror material: quartz Batteries 2): 2x LR41, 1.5V Target audience [telescopes]: Advanced, Visual Observers, Specialists and Research Focusing system: 2.5′′ Hexafoc DeLuxe with 10:1 Type: LR41 Mount type: dobson Manufactured by Explore Scientific Use of this product, and all those offered on this website, will be the personal and sole responsibility of the person using them. Шикото Катана мастер голубовато-зеленый Longquan выковали молотком Шикото Катана мастер голубовато-зеленый Longquan выковали молотком Shipping Shipping products to Spain is free, for other countries calculated by product and destination All shipments are made in a period between 3 and 10 days.

Price: 9308.36 USD

Location: Toledo

End Time: 2025-01-10T15:14:12.000Z

Shipping Cost: 163.36 USD