BRESSER StarTracker Astronomical Photo Mount Kit

Do you already own a photo camera and would like to create impressive pictures of the night sky with the help of the long exposure or even make time-lapse pictures with little effort ? The BRESSER StarTracker Astronomical PhotoMount PM-100 is the ideal base. Not only for beginners in astrophotography, this mount is particularly well suited, but also the experts swear by a compact and easy-to-use mount to automatically compensate for the natural rotation of the earth. The built-in tracking motor rotates the saddle-mounted camera precisely against the earth's rotation and thus the stars remain in pinpoint shape even with long exposures. If you already own a sturdy photo tripod with a video tilt head you can use the photo mount's head directly with the 1/4 inch & 3/8 inch photo thread holes. The pole height (latitude) is then adjusted by the video tilt head. The photo-mount with tripod with carry-case and polar wedge are also available as a bundle - Product No.: 4964120 Which cameras are basically suitable for use with the BRESSER photo mount ? All cameras with ¼ inch (6.3mm) tripod connection thread and bulb length" B "for long exposure are suitable. The BRESSER StarTracker Astronomical Photo Mount PM-100 is designed for a camera with lens of max. 2.0 kg total weight to carry and track in polar mode. In Azimut mode also a camera weight up to 5.0kg is possible.  Large aperture, wide-angle lenses are ideal for the beginning, because the requirements for tracking accuracy accumulate with increasing focal length and exposure time. Thus, a shot with wide-angle lens can be exposed for up to several minutes and the stars remain punctiform without problems. For example, with a 200mm telephoto lens the polar alignment of the photo mount must be exactly right. But thanks to the integrated pole finder tunnel, this is done quickly. After setting up the light and compact StarTracker Photo Mount, simply set the approximate latitude (pole height) and aim Polaris through the integrated pole finder tunnel. Then mount the camera with the photo lens using the quick-release plate on the supplied ball head. With the ball head, the camera can be aligned and determined at any time on any section of the sky. As soon as the tracking motor is switched on, long-time exposure can be started immediately. This does not even take 5 minutes ... The tracking is carried out by a precise stepper motor, which can be controlled by an easy digital setup on LCD screen. Low power consumption allows up to 20 hours of operation with just one battery charge or simply use the micro USB port for an unlimited power supply. FEATURES Equatorial StarTracker Photo-Mount Automatic siderial tracking against the Earth rotation  Different tracking speed setting possible Suitable for northern and southern henisphere Time lapse: from 15 minutes to 48 hours Ballhead with quick release saddle plate and 1/4" Photo thread for Kamera mountingPhoto-Mount with 1/4" threaded bolt for ballhead mounting Additional quick release coupling for ball head removal High precision stepper motor with helical gear for accurate tracking Clear LCD screen and easy setup menu Battery operation 4 x AA batteries or mico USB (optional acc.)  Battery life: up to 20 hours Weight Photo-Mont: 0.63kg Load capacity of Photo-Mount: up to 2.0kg/5.0kg (EQ/AZ) Optional Acc: Polar-wedge, Tripod and carry-case, optical pole finder scope with illumination unit SCOPE OF DELIVERY StarTracker astronomical Photo-Mount head Ballhead with quick release saddle plate User manual

Do you already own a photo camera and would like to create impressive pictures of the night sky with the help of the long exposure or even make time-lapse pictures with little effort ? The BRESSER photo mount is the ideal base. Not only for beginners in astrophotography, this mount is particularly well suited, but also the experts swear by a compact and easy-to-use mount to automatically compensate for the natural rotation of the earth. The built-in tracking motor rotates the saddle-mounted camera precisely against the earth's rotation and thus the stars remain punctiform even with long exposures. Which cameras are basically suitable for use with the BRESSER photo mount ? All cameras with ¼ inch (6.3mm) tripod connection thread and bulb length" B "for long exposure are suitable. The BRESSER photo mount is designed for a camera with lens of max. 2.5 kg total weight to carry and track. Large aperture, wide-angle lenses are ideal for the beginning, because the requirements for tracking accuracy accumulate with increasing focal length and exposure time. Thus, a shot with wide-angle lens can be exposed for up to several minutes and the stars remain punctiform without problems. For example, with a 200mm telephoto lens the polar alignment of the photo mount must be exactly right. But thanks to the optical pole finder, this is done quickly.  After setting up the light and compact photo mount, simply set the approximate latitude (pole height) to the scale and aim Polaris through the illuminated pole finder scope. Then mount the camera with the photo lens using the quick-release plate on the supplied ball head. With the ball head, the camera can be aligned and determined at any time on any section of the sky. As soon as the tracking motor is switched on, long-time exposure can be started immediately. This does not even take 5 minutes ...  The tracking is carried out by a precise stepper motor, which can also be moved via the hand box with 2- or 32-fold speed in forward and reverse. Thus, the sky section can be adjusted even more precisely. Low power consumption allows up to 50 hours of operation with just one battery charge.  The height-adjustable stainless steel tripod with polar wedge is an extremely stable base for the BRESSER photo mount. Thanks to the integrated circular level in the tripod head even the leveling of the photo mount is child's play. If you already own a sturdy photo tripod with a video tilt head you can use the photo mount's head directly with the 1/4 inch & 3/8 inch photo thread holes. The pole height (latitude) is then adjusted by the video tilt head. The photo-mount and the tripod with polar wedge are also available separately - Product No.: 4964111 and 4964112   FEATURESEquatorial Photo-MountAdjustable stainless steel field tripod with polar wedge and bubble levelAutomatic siderial tracking against the Earth rotation Handbox to control the tracking motors (2x/32x)Suitable for northern and southern henisphereOptical pole finder scope with illumination unit includedBallhead with quick release saddle plate and 1/4" Photo thread for Kamera mountingPhoto-Mount with 3/8" threaded bolt for ballhead mountingPhoto-Mount with 1/4" und 3/8" inner threads for tripod mountingHigh precision stepper motor with helical gear for accurate tracking Large screws and handles for easy usage at night  Battery operation or stabilized power adapter (optional acc.) Battery life: up to 50 hoursPower connector at handbox: 6 volts DC jack 5.5/2.5mm (positive pole at center pin)Weight Photo-Mont with ballhead: 1.4 kg Weight tripod with polar wedge: 3.5 kgLoad capacity of Photo-Mount: up to 2.5 kg Height of camera sattle plate max. 140 cmSCOPE OF DELIVERYFoto-Mount headTracking motor with HandboxUltra-stable stainless steel field tripod with bubble levelBallhead with quick release saddle plate Pole finder scope with illumination unitBattery compartment 6 volts with case (no D-batteries included)Manual   

The BRESSER Messier EXOS 100 GOTO Mount is a high-quality German equatorial mount for telescopes and cameras. It automatically locates celestial objects and moves your telescope precisely into position. You can operate the mount using the hand controller with display and keypad, or enjoy wireless control via Wi-Fi from a mobile device, laptop or PC. With a payload capacity of up to 5 kg, the mount is ideal for both visual observing and astrophotography.A stable platform for your telescope or cameraThe Vixen-style dovetail saddle provides a secure attachment for telescopes and cameras. The stainless steel tripod features height-adjustable legs, making it easy to set up at a wide range of observing locations, while the 2 kg counterweight ensures the telescope is properly balanced. A battery compartment for eight C batteries means you can use the mount even when there is no mains power nearby. Alternatively, you can connect a power station (not included) for the power supply.Easy polar alignmentThe built-in bubble level helps you set up the tripod perfectly level, while the integrated polar finder tunnel allows you to roughly align the mount with the north celestial pole. Fine adjustment screws for latitude and azimuth then let you fine-tune the alignment. For even greater accuracy, the optional polar scope (Art. No. 0456103) enables precise polar alignment, helping to improve the accuracy of the GoTo function and tracking.Automatic object location via hand controller or appThe hand controller, with its display and keypad, gives you direct access to the mount's main functions. To get started, simply perform a star alignment using one, two or three stars. Centre the suggested stars in the eyepiece and confirm each position. Once the alignment is complete, you can choose from more than 100,000 stored objects and automatically slew to your chosen target at the touch of a button. The extensive database includes planets, constellations and Messier, NGC, IC, Sh2 and SAO objects. You can also enter and save your own celestial coordinates. Prefer using a smartphone or tablet? Simply download the free app for iOS or Android. Once connected, you can select interesting targets directly from the digital sky map or browse the object catalogue. You can also save your favourites ready for your next observing session.Accurate tracking throughout long observing sessionsThe tracking function automatically keeps your chosen target in the field of view, with sidereal, solar and lunar tracking rates available to suit different observing targets. For manual positioning, you can choose from eight different slew speeds. A quiet belt drive with worm gearing moves both axes smoothly and evenly. The synchronisation function lets you match the mount's position to a known object in the database. For greater accuracy, RA and DEC backlash compensation allows the gear backlash on both axes to be calibrated.Computer control via USB-C and ASCOMThe USB-C interface also lets you connect the hand controller to a computer, allowing you to operate the mount with ASCOM-compatible software such as Stellarium or N.I.N.A.With precise polar alignment, automatic object location, Wi-Fi control and a sturdy design, the mount provides everything you need for visual observing and astrophotography. This compact GoTo mount makes it easy to find and track tens of thousands of celestial objects.Turn your telescope into an easy-to-use GoTo system with the BRESSER Messier EXOS 100 GOTO Mount.FEATURESGerman equatorial mount with GoTo functionPayload capacity up to 5 kgControl via hand controller with display and numeric keysWi-Fi function for control via tablet, notebook or desktop PCHolder for Vixen-style dovetail plates1-, 2- and 3-star alignment for initialisationAccess to over 100,000 stored celestial objectsSynchronisation and RA/DEC backlash compensation for greater accuracy8 slew speeds as well as sidereal, solar and lunar ratesLow-noise belt drive with worm gearPolar finder tunnel for rough alignment with the celestial north polePolar finder scope for precise polar alignment available separately (Art. No. 0456103)Integrated circular bubble level for levelling the tripodUSB-C interface for ASCOM-compatible PC control (e.g. Stellarium, N.I.N.A.)SCOPE OF DELIVERYBRESSER Messier EXOS 100 GOTO MountStainless steel tripod with circular bubble levelHand controller with coiled cableCounterweight (2 kg)Battery compartment for 8 x C batteries (batteries not included)Instruction manual

The new BRESSER Nebula 6 EQ/AZ Wifi-Network Mount is a precise and quiet telescope mount – ideal for astrophotography. The controller box offers numerous central connection options for various accessories such as cameras, filter wheels, and motor focusers via USB (2.0/3.0), simplifying the setup of a professional astro-photography machine. BRESSER relies on innovation paired with quality Made in Italy for this top-class product. The long-standing experience of the manufacturer in mount construction guarantees a high-end device with first-class functionality and highest reliability. Additionally, the in-house development team for hardware and software in Italy ensures quick response times in technical support and the adaptation of new device drivers. True to the motto "Professionals at work!" The mount is controlled via pre-installed web app software, accessible via Wifi and an Ethernet cable connection. The philosophy behind the Nebula GoTo system is to provide the user with a control system independent of a normal PC, which can be remotely controlled in all its functions via a smart device such as a mobile phone or tablet. However, this does not exclude the traditional use of computers of all types and brands, which can be connected to the system either wired or wirelessly. The BRESSER Nebula GoTo System Controller is a Raspberry Pi 4 microcomputer, which allows complete control of the setup (mount, camera, etc.) without the need for any other external device. The BRESSER Nebula GoTo system is already equipped with all Linux-based applications necessary for performing all astrophotographic functions.The existing INDI environment allows the control of almost all devices (cameras, filter wheels, rotators, including observatory domes), necessary for conducting local or remote astrophotography sessions. The system also offers high flexibility for users who prefer to use traditional computer client applications such as Cart du Ciel (Star Chart), TheSkyX, SkySafari, Stellarium, and other planetarium programs as well as SGP, Nina, CCD Ciel, and other astrophotography tools. This complete compatibility is ensured through the adoption of the Alpaca communication protocol, which allows the use of traditional ASCOM platform drivers for native INDI devices. State-of-the-art mount construction The BRESSER Nebula mounts are CNC-manufactured from stainless steel and aluminum. The simple and functional design is thanks to a renowned Italian mount manufacturer, who has designed and now also manufactures these fine BRESSER products 100%. So, look forward to a stable yet easily transportable mount, which despite its light weight of only 16 kg (including tripod) allows a high load capacity of up to 25 kg. Visual Observation For visual observation and direct use, control the mount with the hand control box included in the package. Alternatively, connect the Nebula 6 via WLAN directly to your smartphone or tablet and use the virtual hand control box. Of course, all adjustment parameters can also be adjusted via the web application. The user interface is deliberately simple and clear to ensure intuitive operation. Astrophotography Here, the Nebula mount shows its full strength. Whether mobile or stationary, remote capability is crucial. Connect your laptop or PC either via WLAN or with an Ethernet cable (recommended for faster data transfer) directly to the Raspberry-Pi control unit of the mount. Then use the pre-installed software Kstars/EKOS to control the mount and all external devices such as cameras, motor focus, filter wheel, etc. Alternatively, you can also directly control the unit with your own software. Applications such as Cart du Ciel (Star Chart), TheSkyX, SkySafari, Stellarium, and other planetarium programs as well as SGP, Nina, CCD Ciel, and other astrophotography tools can be used without any issues. 2-in-1 Mount with EQ and AZ Mode If required, the Nebula can be switched from the equatorial mode to the azimuthal mode. This is particularly advantageous for observing nature or tracking satellites. Thus, the mount can be used for various applications and is not limited to astronomy only. Attachment of up to two optics Would you like to adapt multiple optics? No problem. Simply use the option to replace the counterweight bar with another telescope. Use the second optic simply as a counterweight to the main telescope. Set the Nebula 6 to azimuthal mode, remove the counterweight bar, and screw on an extension adapter with a suitable second telescope clamp directly to the mount. FEATURES Precise and quiet telescope mount – ideal for astrophotography Extensive connection options for various accessories via USB Integrated web app software enables central control of all components Integrated Raspberry Pi with USB-3 ports and Ethernet port Compatible with client applications such as Cart du Ciel (Star Chart), TheSkyX, SkySafari, Stellarium Compatible with SGP, Nina, CCD Ciel, and other astrophotography tools Virtual hand control box and settings menu for smartphones and tablets PC control – ASCOM and INDI compatible USB ports for cameras, motors, filter wheels etc. Conversion from parallactic to azimuthal mode possible Small hand box for basic functions included High load capacity yet lightweight Mount CNC-manufactured from stainless steel and aluminum Tooth belt drive for precise and quiet tracking Load capacity: 18 kg in EQ mode and 25 kg in AZ mode Dual-prism clamping for the attachment of Vixen GP and Losmandy Weight of the mount: 11 kg Weight of the tripod: 5 kg SCOPE OF DELIVERY Nebula 6 EQ/AZ Mount Field tripod Central control unit with Raspberry Pi Counterweight: 6 kg (1 piece) Basic hand box Connection cables Power supply 230V/12V/3A

Enter the world of astrophotography now. With the new BRESSER HD moon and planet camera with ST4 autoguider function. This camera is very good for astrophotography with short exposure times, i.e. for celestial objects like the moon, planets or star clusters. For astrophotography with long exposure times for low light deep sky objects, like galaxies and gas nebulae, we recommend the BRESSER Full HD Deep-Sky Camera (Art. No. 4959050) instead, with it's even higher resolution and sensor sensitivity. Equipped with the new high-sensitivity SONY IMX225 CMOS colour sensor, the BRESSER HD moon and planet camera delivers amazing image results with very short exposure times, even with simple telescope equipment. In addition, this ultra-modern camera can also be used as an autoguider, e.g. to actively track the main imaging device with SLR or CCD astro camera. A universal CMOS colour camera that delivers super-sharp lunar and planetary images in particular. The particularly low noise level of this new chip generation from SONY, ensures an exceptionally high brilliance and no cooling is required. Due to the high native pixel resolution of 1280x980, together with suitable telescopes, very beautiful images of the moon, but also detailed planetary images are possible. The ToupSky pro software included in the scope of delivery not only offers the necessary basic functions for image and video recording, but also many helpful special functions for image post-processing and for setting up the Guider. Functions such as live image display, exposure settings, white balance, dark image capture, stacking, timelapse recordings and much more can be individually configured. Especially the very sophisticated software makes it really easy for you to get started in astrophotography. With the automatic settings, you can produce absolutely presentable results without much prior knowledge. If you wish, simply switch off the automatic settings and gradually venture into the individual professional settings. Connect the camera directly to the ST4 connector of your telescope mount and you have fully automatic tracking control. This makes long exposures of several minutes possible without the stars producing unwanted line marks due to the ever-present synchronisation fluctuations of a telescope mount. A corresponding ST-4 connection cable is even included with the camera. Due to the high light sensitivity of the camera, you will always find a suitable guide star even with very short exposure times. For connection to guide tubes or off-axis guiders, the camera has a 1.25" plug-in sleeve, 1.25" filter thread (M28.5x0.6) and C-mount thread (1 "x1/32"). IMPORTANT NOTES: This is not a stand-alone guider camera. You always need a Windows 10 / 11 computer to take pictures and for autoguiding. The autoguider software is not included. You can use PHD2 Guiding, Guidedog, Metaguide, Guidemaster (freeware) or AstroArt, MaxIm DL (paid). DOWNLOAD PHD2-Guiding: https://openphdguiding.org/ DOWNLOAD GuideDog: http://barkosoftware.com/GuideDog/index.html DOWNLOAD latest camera software and drivers: https://www.touptek-astro.com/downloads SPECIFICATIONS Camera type: BRESSER / Touptek GPCMOS01200KPF color Sensor: SONY IMX225 CMOS colour Image and video size: Full HD 1280 x 960 pixels (video 30-54,4 FPS) Native sensor size in pixels: 1280 x 960 Exposure times: 102ms to 16min Binning: YES, 1x1 and 2x2 Megapixel: 1.2 MP Sensor size in mm: 4.8 x 3.6 Pixel size: 3.75 µm x 3.75 µm Bit depth: 8/12 switchable ST-4 Compatible Autoguider: YES CNC milled housing made of aluminum Protective strap on the camera housing Camera tube diameter: 1.25 inch (31.7 mm) Camera connection thread: C-mount + 1.25 "filter thread Computer interface: USB 2.0 C-mount extension tube with 1.25 inch filter thread included No IR cut filter installed Operating system: WINDOWS 10 + 11 ASCOM and WDM driver included Field of view for different focal lengths in mm (given in arc minutes): 400 mm - 41,2'x 30,9' 500 mm - 33'x 24,7' 600 mm - 27,5'x 20,6' 700 mm - 23,5'x 17,7' 800 mm - 20,6'x 15,4' 900 mm - 18,3'x 13,7' 1000 mm - 16,5'x 12,4' 1250 mm - 13,2'x 9,9' 1500 mm - 11'x 8,2' 1750 mm - 9,4'x 7,1' 2000 mm - 8,2'x 6,2' SCOPE OF DELIEVRY HD camera C-mount adapter USB 2.0 PC connection cable with a length of 180cm Interface cable for ST-4 autoguider port with 150cm length Dust cap for camera tube Software CD

THE PMC-EIGHT GOTO SYSTEM JUST AWARDED A SKY AND TELESCOPE HOT PRODUCT FOR 2018. The new Explore Scientific LOSMANDY G-11 with PMC-8 Electronics is quite unique and special. Most of the serious amateur mounts on the market today offer single processors. The PMC-8 electronics are extremely robust. They include a 2-Channel Multi-Processor Micro-controller with 8 CPUs that run independently and are completely deterministic in their behavior, thus the name PMC-8. Within this multi-processor system is a 64 Kbyte EEPROM Non-Volatile Memory bank used to store parameters; a Wireless Ethernet 10/100 with full IP function which permits operation from anywhere using a browser, ASCOM, or APP over the web or serial port; and Non-Volatile Memory used to store user selected parameters. The electronics also includes an Auto-Guide port (ST4 contact input) and features the only wireless ASCOM driver on the market. The belt driven system uses 2 timing pulleys (1-45 groove and 1-10 groove) with fiberglass re-enforced neoprene belt connected to a Nema16 bi-polar stepper .67 amps 12ncm motor then connected to the worm. Precise bearings in both axes ensures minimal backlash at all nine possible tracking speeds. The included battery pack (12 V) takes eight size "D" batteries. The head rests on a very tough and rigid CNC machined LOSMANDY Aluminum field tripod. This system is all controlled from a tablet, notebook or desktop pc with 7" display and WIN8.1, WIN10, iOS or Android 4.4 with a beautiful full graphical user interface using our very own ExploreStars OpenGoto® Software. The ExploreStars OpenGoto® Software has the same basic functions as most all other mounts on the market today. ExploreStars is a free App downloadable from the Microsoft App store and GooglePlay. The basic download includes a standard 2 star or 3 star alignment procedure, over 70,000 star database, the Messier Catalog and Solar System objects. The software interface features a Classic four-button pattern for guiding, centering, moving and slewing on the touch screen of your tablet or phone. Pull-down menus open to offer the intuitive 2 star and 3 star alignment procedure, selection of the various catalogs, guided tours, the sync button, the park position, search feature and the coordinate input screen to enter RA and DEC coordinate information. Numerical key pad allows for selectable and user enterable GOTO speeds for slewing, centering and guiding rates. You can also set sidereal, king, lunar, solar, and user defined tracking rates. What makes this software different is that YOU can write your own code and import it into this software. Create a Messier challenge. Create a selectable list of objects you want to photograph and program that information into the software. With the ability to write your own code, you can create whatever your heart desires. Share it with the community of astronomers that are using this software. In addition, this mount can be controlled by any ASCOM compliant software using the built-in wireless ASCOM driver. GPS-compatible and auto time / date settings are dependent on optional receiver on computer or tablet. Here are most of the ASCOM software packages available for use with the Explore Scientific / Losmandy G-11 with PMC-8 mount: ACP; APT; AST / ATC & Ricerca (Omega Lab); AstroArt; AstroMB; Cartes du Ciel / Sky Chart; CCD AutoPilot; DeepSky; Deepsky Planner; DFM Engineering; Earth Centered Universe Pro; EasySky; Eye and Telescope; Project Pluto; Hallo Northern Sky; Maxim DL; MaxPoint; PinPoint Astrometric; Prism; Sequence Generator Pro; Sidereal Technology; The Sky; SkyMap Software; SkyTools 3; Star Atlas PRO; Sky Observer; StarryNight; Stellarium; Virtual Moon Atlas; and WorldWide Telescope. Scott Losmandy is the designer of the world-famous G-11 mount and tripod that works with most popular-sized telescopes for the serious astronomer.Mr. Losmandy has graciously allowed us to buy these mounts and add the new Explore Scientific PMC-Eight GoTo system with its precision stepper motors... We also include the Losmandy G11 RA Extension Kit so you can slew past the meridian and disassemble the RA and Dec axis for easier transport.VIDEO REVIEW: https://youtu.be/UV2CdRUyC9AIMPORTANT NOTETo start using ExploreStars app, download the free app and download the celestial data set that contains the astronomical catalogs, reference images, and reference text. Simply by unzipping the ExploreStars folder containing the expanded celestial data set into your Pictures directory, you will expand the native database from a thousand objects to over seventy thousand objects. SOFTWARE DOWNLOAD https://explorescientificusa.com/pages/software-and-downloads-for-pmc-eight-system FEATURESUnique PMC-8 Open Goto SystemBeautiful full graphical user interface using our very own ExploreStars OpenGotoWifi controlled by Tablet, Notebook or Desktop PC with 7" or larger display, and Wifi function (not included)Needed system software of optional computer or tablet: WIN8.1, WIN10 or Android 4.4 or higherClassic four-button pattern for guiding, centering, moving and slewing on the touch screenIntuitive 2 star and 3 star alignment procedureMultiprocessor Micro Controller with 8 CPU´sMicro-Stepper Motors NEMA-16ASCOM + INDI Driver available: YES , supports also Pulse-GuidingYOU can write your own code and import it into this softwareGPS-compatible and auto time / date settings are dependent on optional receiver on computer or tabletSaddle plate accepts both "D" Losmandy Style Dovetail or Vixen Style DovetailSPECIFICATIONSLoad capacity equipment: 27 kg (60 lbs.)Load capacitiy total rating: 45 kg (100 lbs.)Dovetail saddle plate: 3" Losmandy und Vixen GPWeight EQ head: 15 kg (33 lbs.)Weight tripod: 16 kg  (35 lbs.)SCOPE OF DELIVERYExplore Scientific LOSMANDY G-11 with Open GOTO PMC-8Losmandy CNC machined Aluminum Field Tripod Counter Weight 1 x 10 kg Power supply 12VExploreStars Software via downloadIMPORTANT NOTE: This package doesn´t include any WINDOWS/iOS/Android Computer or Tablet.FAQ / KNOWLEDGE-BASE:  https://explorescientificusa.com/pages/explore-scientific-knowledge-base-and-faqsPMC-Eight GROUPS:  https://espmc-eight.groups.io/g/MAIN

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