EXPLORE SCIENTIFIC Ultra Light Dobsonian 305mm GENERATION II (Refurbished)

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

A breath of fresh air for fresh air enthusiasts, the BRESSER 7-in-1 Weather Center Weather Station Air-Mon merges locally measured weather data with current internet air quality values for your home, featuring a modern weather station with app and color display. Weather station with outdoor sensor for a complete meteorological overview Quickly mounted, the 7-in-1 wireless sensor in conjunction with the stylish base station including integrated thermo-hygrosensor and barometer, swiftly delivers accurate measurements. Look forward to local information about temperature, humidity, air pressure, wind speed, wind direction, precipitation, UV levels, and light intensity. For a broader weather outlook, just check the reliable 7-day forecast including maximum and minimum temperatures. Retrieve meteorological history through the max/min value memory. Fully connected – smart use of the Wi-Fi weather station Specific current air quality values appear via the Wi-Fi connection on the elegant color display. Not at home? Access all data via the intuitive ProWeatherLive App or through a web browser – anytime, anywhere! Breathe deeply again with the air quality monitor The air we breathe matters – protecting our health from pollutants around us is crucial. Therefore, the weather station displays the 6 most important pollutant values in your environment: carbon monoxide, nitrogen dioxide, sulfur dioxide, ozone, as well as fine particulate matter PM2.5 and PM10. And because these are many values, the AQI (Air Quality Index) provides a summarized assessment of the current air quality. Red, yellow, or green – the traffic light as a comfort indicator Is the air too poor for Sunday coffee on the terrace? The comfort level traffic light, available for each air quality factor, gives the answer. Conveniently, indoor temperature and humidity, as well as UV radiation, are also equipped with a traffic light indicator. This allows you to see at a glance the status of indoor climate and the likelihood of sunburn.Premium weather station with additional potential: the extensions In addition to its main functions, the weather station already includes useful features such as automatic time display, moon phases, and an alarm clock. A well-rounded package indeed. And there's more: The BRESSER weather station, with rain gauge, wind gauge, and more, can be tailored to your individual needs with optionally available additional sensors. Optional devices (not included) allow you to easily check, for example, the pool temperature, soil moisture in your flowerbed, or indoor climate in multiple rooms. A CO2 sensor (not included) and an HCHO/VOC sensor (not included) provide even more insights into local air quality. Browse through the compatible BRESSER accessories for individual extensions. Make the 7-in-1 Weather Center Weather Station Air-Mon the new centerpiece of your home. BASE STATION FEATURESWeather station with air quality monitor Wi-Fi connection for retrieving and sharing local data on platforms like ProWeatherLive, WeatherUnderground, and Weathercloud Display of internet data on local AQI (Air Quality Index) and the 6 key pollutants (PM2.5, PM10, NO2, SO2, O3, CO) Comfort level traffic light for air quality measurements, UV levels, and indoor climate Display of precise measurements from the 7-in-1 outdoor sensor (Outdoor temperature, humidity, wind speed, wind direction, precipitation, UV levels, light intensity) Indoor temperature (°C/°F) and humidity Current weather and 7-day forecast with max/min temperatures Air pressure Weather and air quality alert functions Weather data calibration Max/min value memory Time and date (internet time synchronization) Moon phase, sunrise and sunset Alarm clock with snooze function and frost warning Expandable with the following optional sensors for direct measurement on site: Up to 3x thermo-hygro, soil, and/or pool sensor (not included) 1x PM2.5/10 sensor (not included) 1x CO2 sensor (not included) 1x HCHO and VOC sensor (not included) Suitable for table or wall mounting Power supply: AC adapter (included), CR2032 backup battery (not included) 7-IN-1 OUTDOOR SENSOR FEATURESMeasuring temperature and humidity Measuring wind speed, direction, and precipitation Measuring UV levels and light intensity Solar panel for extending battery life Range: up to 150 m Power supply: 3x AA batteries (not included) SCOPE OF DELIVERYBase station 7-in-1 wireless sensor Power adapter Operating instructions

Ultra Light Dobsonian 305mm 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 305mm aperture gathers more than 1800-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 450mmx450mmx320mm; Mirrorbox 380mmx380mmx300mm; Trusses approx. 980mmEyepiece Height while pointing at zenith approximately 1,4m.12“ Net total weight: 32,1 kg; 12“ Mirror Box: 18,9 kg; 12“ Secondary cage +Rockerbox: 10 kg; 12“ 4 Pairs of trusses: 1,8kg; 12“ Altitude Wheels: 1,4kg ; 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: Larger feet to improve stabilityNEW: Universal finder slot to enable an easy finder upgradeNEW: Counter-weight system included - 2 x 1.0 kg NEW: 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 fansCounter-weights 2 x 1.0 kgExtension tube for focuserReducer 2"/1.25"Manual