EXPLORE SCIENTIFIC 52° LER Eyepiece 20mm Ar

Mid-range high power eyepieces like the 10 mm are instrumental when transitioning through magnifications to observe an object until it is best seen. There are several aspects that have to come together when observing at high powers: good-to-perfect atmospheric seeing conditions; telescope optics that are collimated; a telescope that is acclimated to the ambient temperature; brightness and size of the object being observed are just a few aspects to consider. The observing challenges are high, but the rewards of observing at high power with razor sharp views are unforgettable. Comfort, Quality, Value. The Explore Scientific 52° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plössl. These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don't have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed - this makes sure you will be able to enjoy these eyepieces for many years to come.SPECIFICATIONSLarge eye distance, large field and great image sharpness Excellent viewing position for people with glassesExcellent field sharpness even with fast optics52° apparent field of viewArgon-purging prevents internal fogging, the sealing facilitates cleaningPatented EMD-coating to maximize contrastBlackened lens edges to avoid reflexesAll eyepieces of this series are parfocalStainless steel barrel with conical security cutoffDust covers and protective bag includedSCOPE OF DELIVERY52° EyepieceDust coversProtective bag

With the usage of barlow lenses, you can extend the equivalent focal length of telescopes and hence increase the magnification of your observed targets. Subsequently, you can use lower power eyepieces in Barlows to act as much more powerful eyepieces, but retain the larger ocular size and more comfortable viewing that comes with lower power eyepiece designs.Due to their two lens design, these Barlow lenses provide a brilliant image quality for the whole visual field and are suitable for observations and photography.  The black coloured Barlow element cell in this BRESSER Barlow Lens 2x 31.8mm/1.25," can be unscrewed and has the same thread as 1.25" filters, allowing it to be mounted in 1.25" eyepieces, t-adapters and other accessories, giving you flexibility of use and the ability to vary magnification in different accessories.  For instance, the black Barlow cell screwed into the average length nosepiece of a standard push fit t-adapter will give around 1.6x magnification on an attached DSLR.  This can be very useful when trying to get to photographic focus with some Newtonians and Solar Telescopes, which lack the necessary amount of in focus travel to get a camera to a prime focus position.FEATURESsuitable for observations and photographydoubling of the focal lengthtwo lens designfully multi-coatedWHAT'S INCLUDEDBarlow lens (1pc)

BRESSER 5mm Plössl Eyepiece 1,25" (31,7mm) Since years a well known and approved Plössl eyepiece. Ideal to improve the performance of your telescopes for a low budget price. All the BRESSER Plössl eyepieces provide sharp and high-contrast images because of the 4-lens design. All lenses have fully-multicoated surfaces which prevents reflections efficiently. Every eyepiece is equipped with a foldable rubber eyecup to avoid straylight from the sides and the inner eyepiece shaft is carefully blackened as well. Housing and eyepiece shaft are completely made from metal - no plastic is used. Filter thread for use with colour- and nebular filters is also available. All these Plössl eyepieces offer a much better image quality than all the very simple made Kellner and Huygens eyepieces. FEATURES Focal length: 5 mm Field of view: 50° Lens-Design: 4 lenses in 2 groups , fully-multicoated Housing material: completely made from metal Rubber eyecup: YES, foldable Filter thread: YES Storage: Twist-pack SCOPE OF DELIVERY BRESSER Plössl eyepiece with rubber eyecup Twist-pack

Five extension tubes from 30 to 5mm length with thread connection M48x0,75mm in a set. For adjusting different distances of the camera to the focal plane of the telescope or the corrector/field flattener. There is an M48.0,75 internal and external thread in each individual tube. The M48x0.75 thread is also called large T2 photo thread or 2.0 inch filter thread. Camera specific bayonet adapters or color and nebula filters can be used. Included are 5 different tubes with the steps 30, 20, 15, 10 and 5 mm. The larger free inner diameter of 45.0 mm effectively prevents undesired vignetting of the camera sensor. The outer diameter of the sleeves is exactly 50.65 mm and can therefore be mounted directly in any 2 inch diameter eyepiece adapter. FEATURES Extension sleeves M48x0,75 in set Five extension sleeves: 30, 20, 15, 10, 5 mm Use with correctors and field flatteners Distance adjustment from camera to focal plane Suitable for camera-specific bayonet adapters Also suitable for 2.0 inch colour and nebular filters Internal and external thread M48x0.75 mm (large T2 thread) Large inner diameter of 45.0 mm Outer diameter is 50.65 mm (2 inches) Black matt anodized aluminium Total weight 85 grams SCOPE OF DELIVERY Extension sleeves M48x0.75 (5 pieces)

Perfect for passionate weather enthusiasts: The BRESSER 9-in-1 MeteoChamp HD WiFi Weather Station offers everything a hobby meteorologist's heart desires with various display modes, a sophisticated multi-sensor with 9 different sensors, and comprehensive data storage with export options. Additionally, the extensive weather forecast, the heat stress index, and the air quality data make it easy to plan your outdoor activities while keeping health in mind. And thanks to the Wi-Fi connection, you always have your own measurements on the go on your mobile device. Weather station perfectly presenting extensive measurement data How strong will the wind blow in my face shortly? With the wireless weather station, you can answer this and other meteorological questions in no time. The partially solar-powered multi-sensor measures all relevant weather parameters from temperature to air pressure with precision. Trend graphs, data log, channel overview or max/min value display – enjoy numerous possibilities to evaluate the data at a glance on the screen. A CSV export to your PC can also be done in no time. Detailed weather forecast for long-term planning Do you want to know if your weekend trip will be ruined by rain? With the MeteoChamp, you will have a comprehensive weather forecast on your screen in no time. Find out what to expect hourly for the next 24 hours or daily for the next 14 days in terms of climate. The temperature and precipitation probability forecast helps you with your planning. Carefree summer fun – with the heat stress index When the weather is nice, many head outdoors. But when the sun is too strong, we need to take care of our health during strenuous activities. This is where the heat stress index comes into play, calculated by the weather station. It is based on the Wet Bulb Globe Temperature, which considers the key heat factors in the environment. The four warning levels help you stay safe and healthy on hot days. Breathe easy – with the air quality display How clean is the air you breathe? The local AQI (Air Quality Index) shows you directly whether the air in your surroundings is clean. Also, current data on pollutant exposure from PM2.5, PM10, NO2, SO2, O3, and CO from the internet are available at the press of a button. For data measured directly on-site, you can expand your weather station with optional CO2 sensors (not included), in addition to optional thermo-hygro sensors (not included) or water detectors (not included). Keep an eye on the climate with the help of a versatile weather expert: the BRESSER 9-in-1 MeteoChamp HD WiFi Weather Station. FEATURES BASE STATION Weather station with HD display for various display modes Display of the exact measurement data from the 9-in-1 outdoor sensor (outdoor temperature, outdoor humidity, wind speed, wind direction, precipitation amount, UV level, light intensity, WBGT, air pressure) Heat stress index based on WBGT Weather forecast (14 days / 24 hours) including temperature and precipitation probability WiFi connection for sharing and retrieving local data on platforms like ProWeatherLive (3 years membership included), WeatherUnderground, and Weathercloud Indoor temperature (°C/°F) and humidity Display of internet data on local AQI value (Air Quality Index) and the 6 most important pollutants (PM2.5, PM10, NO2, SO2, O3, CO) Multi-channel overviews of live data from all wireless sensors Felt outdoor temperature and dew point Max/min value memory with timestamp Trend graphs over 72 hours for all sensors Data storage with export function High/low value alarm for various measurements Weather data calibration Alarm clock with frost warning Time and date (internet time synchronisation) Moon phase, sunrise/sunset, moonrise/moonset Expandable with the following optional sensors: Up to 7x thermo-hygro, ground, and/or pool sensors (not included) Up to 7x water detectors (not included) 1x PM2.5/10 sensor (not included) 1x CO2 sensor (not included) 1x HCHO and VOC sensor (not included) 1x lightning sensor (not included) Various backgrounds adjustable Power supply: Power plug (included), CR2032 back-up battery (not included) Good to know: The sensor pairs with multiple base stations at once – perfect if you want to keep an eye on conditions in different rooms. FEATURES MULTISENSOR Measures temperature, humidity, wind speed, wind direction, precipitation amount, UV level, light intensity, air pressure, WBGT Operates via a large movable solar panel If there is insufficient sunlight, operates on 3x AA batteries (not included) Waterproof housing High range up to 150 m SCOPE OF DELIVERY Base station including power plug 9-in-1 outdoor sensor Manual

The Bresser cover slips have a size of 22 x22 mm and a thickness range from 0,13 – 0,17 mm. They are used to cover the sample on the slide. A thin and even sample is necessary for observations with high magnification. These cover slips are designed to work with all objectives that have the thickness of 0,17 mm included in their optical design. Usually you find this number printed on the objective. For beginner’s and student microscopes, these cover glasses are also suitable. FEATURES Cover slips, square, size 22x22mm Soda lime glass pre cleaned SCOPE OF DELIVERY 100 cover slips Kunststoff-Box