Sun projection screen set B

With its 8.9 cm (3.5") LCD monitor, this student microscope allows several people to view objects at the same time. The microscope can be used for both transmitted light and (limited) reflected light microscopy. You can take photos of your observations or record them as a movie. The device has a card slot for SD cards and a USB port (for transferring photos/videos saved on an SD card). The magnification is 50-500x, the digital magnification reaches up to 2,000x (4x digital zoom). It is supplied with a comprehensive range of accessories. Thanks to the integrated LED incident light illumination, even opaque objects can be viewed without time-consuming preparation. Objects up to 3mm high can be viewed, e.g. small insects, plant parts, sand and much more. This allows children in particular a quick and uncomplicated introduction into microscopy. Transmitted light microscopy then opens up the world of cells and microorganisms. It doesn't just have to be permanent specimens; an onion skin, tiny moss leaves or water plant leaves already clearly show the structure of the plant cells. Water samples from a pond, aquarium or watering can contain numerous ciliates, rotifers and other protozoa. There is a lot to discover with the BRESSER LCD microscope, and several people can always relax and observe on the screen at the same time. FEATURES Type: Biological microscope for transmission/Incident Illumination: LED, AC Power Color filterwheel: red, green (bright, dark), yellow, blue Camera resolution: 5MP SCOPE OF DELIVERY Microscope 4x/10x/40x objectives mechanical desk with nonius USB cable Color filter wheel 5 permanent samples / slides 10 blank slides 20 cover glasses Large accessory pack with yeast, gum media, sea salt, artemia eggs, scissor, tweezers, pipette, 2 preparing needles, microtome, hatchery with magnifying lid

Make your AXJ mount more comfortable and precise with high precision encoders! The Vixen AXJ encoders allow you to manually move to the celestial objects via the monitor. Generally, computer-controlled mounts have an automatic "go-to" system where the position of the objects through a 2-star allighnment must be stored before the observation. Once you have done this, the mount is able to find the objects automatically. However, if you loosen the clamping levers on the mount while using the "go-to" system, the telescope loses information to identify the object positions and the "Go-to" becomes unusable. For this reason, the telescope could not be moved manually. However, with the AXJ encoder, this is now possible. You can "go-to" one object and manually adjust the next by releasing the clamp, without losing the positioning information on the next "go-to". On the high resolution monitor of the STARBOOK TEN control you can now adjust the objects comfortably by hand. The second big advantage is an enormously high tracking accuracy with a periodic error <0.5 arcseconds which allows long time exposures of faint celestial objects without an autoguiding system. This is a dream for any serious astrophotographer. The AXJ encoders are mounted inside the mount, and thus do not affect the dimensions of the AXJ mount. So there is no need to buy a larger storage case. FEATURESRA Encoder Sensor: Reflective laser sensor 2 pieces Refractive rotation disk made of glass Resolving power: 0.1 arc seconds Periodic error: Less than 0.5 arc seconds rms (typical) Power supply: From AXJ mount DC5V 0.2A Electrical Terminal: D-SUB15PIN female (connected to AXJ) Dimensions and weight: 99.5 mm diameter x 27 mm thickness / 350 g DC Encoder Sensor: Reflective optical sensor Resolving power: 0.2 arc seconds Power supply: From AXJ mount DC5V 0.1A Electrical Terminal: D-SUB9PIN female (connected to AXJ) Operating temperature: Between 0 and 40 degrees Celsius Dimensions and weight: 99.5mm diameter x 25mm thickness / 320g SCOPE OF DELIEVRYAXJ Encoder (2pcs) Mounting tool Mounting screws 

Explore the beauties of the night sky with this complete telescope set. Everything is included so that you can get started immediately with the fascinating hobby of astronomy: the astronomical reflector telescope with 150 mm aperture and 1,400 mm focal length, the equatorial mount, the tripod and extensive accessories for exciting observations. Especially important for beginners: the system is very easy to use. Particularly the Moon, the planets and the Sun appear impressive through the Pollux-II. Powerful performance for your first celestial observations – the telescope Take your first steps in astronomy with this classic reflector telescope of the "Newton" type. Because it is equipped with an additional lens inside the focuser, it belongs to the group of the so-called "catadioptric" optics. One advantage of this combination of lens and mirror: despite the large focal length, the telescope tube is relatively short and therefore easily transportable. In addition, you can look forward to a comfortable observation position at all times. This is because with telescopes of this design you do not look in at the back of the telescope, but at the front and laterally. So you don't have to bend down, even if the reflector telescope is pointed vertically upwards at the sky. The large aperture of 150 mm collects a lot of light from the celestial objects. In addition, 150 mm aperture and 1,400 mm focal length result in a focal ratio (ratio of aperture to focal length) of 1 to 9.3 (F/9.3). This allows you to enjoy viewing your favourite objects at high magnifications with good contrast. Admire especially the planets or details on the Moon through the entry-level telescope. But also some deep sky objects are very nice to observe: open star clusters, globular clusters and bright planetary nebulae such as the Ring Nebula M57 in the constellation Lyra can be seen beautifully through this astronomical telescope. But how close can you get to the celestial eye-catchers? The 150 mm aperture achieves a resolving power that allows magnifications of up to 300x with sharp images. The technical possibilities go far beyond this – theoretically up to 1,050x using the included accessories. However, as the magnification increases, the sharpness of the image can slowly decrease. In addition, high magnification also requires the right environmental conditions. For no matter through which telescope you look, the air turbulence in the atmosphere (seeing conditions) always influences your observation and magnification possibilities. Note for nature lovers: If you choose a Newtonian telescope like the Pollux-II reflector telescope, you can look forward to a specialist in astronomical observation. However, the image is always displayed laterally reversed as well as upside down, which makes no difference when observing the sky. However, this type of telescope is less suitable for nature and landscape observation during the day. Would you like to use your new telescope for exciting nature discoveries as well? Then we recommend that you choose one of the BRESSER refractor telescopes. Solid base for gazing skywards – mount and tripod Have you found the perfect location for your journey of discovery into the night sky? Then simply mount your astronomical telescope with the equatorial mount on the height-adjustable aluminium tripod. The special feature of this type of mount: after the so-called "alignment", the positioning of an axis parallel to the Earth's axis, the movement of the celestial bodies only has to be compensated for on this one axis. To do this, you simply point the axis approximately at Polaris. This is a huge advantage over the azimuthal mount, where both axes are moved simultaneously. In addition, the two flexible shafts with fine adjustment make adjusting and tracking the telescope very precise and comfortable. And to ensure that accessories are always at hand, they can be stored on the handy shelf between the tripod legs.Keep track of things automatically: For this telescope’s equatorial EQ-3 mount, the tracking motor with item number 4951400 is available as an optional accessory. This eliminates the need to manually track a celestial object set in the telescope. When this motor is installed at the mount, it automatically tracks the celestial object, keeping it in the field of view of the eyepiece. This makes observing the night sky even more comfortable! Everything you need, night and day – the accessories The astronomical telescope comes with a wide range of equipment so that you can start admiring the Moon, planets or the Sun straight away. At night, the LED viewfinder helps you keep an overview of the sky. Once installed parallel on the tube and correctly aligned, the small red dot shows you where the telescope is pointing when you look through it. This way, you can align the optics precisely and find celestial bodies more quickly before you then take a closer look with the high magnification. Varying views of the universe: the two eyepieces allow you to marvel at your observation objects in different magnifications. They are simply inserted into the telescope's focuser using their sockets with a standardised 1.25 inch (31.7 mm) diameter. You want to see even more details? Then go for the 3x barlow lens, which triples the magnification of the eyepieces. If you would like to make astronomical discoveries even during the day, use the solar filter to observe the star of our own solar system. It allows you to easily and safely observe sunspots and granulation on the sun. CAUTION: Never point the telescope at the sun without the solar filter! Capture special highlights easily – with the smartphone adapter, you use your smartphone as a camera for your telescope. This way you can quickly take your first photos of the Moon or the Sun, for example, and get started in astrophotography. FEATURES Reflector telescope with 150 mm aperture and 1,400 mm focal length Reflector type catadioptric Well suited for observing the Sun, Moon and planets Height-adjustable tripod with equatorial EQ3 mount Precise adjustment through flexible shafts and fine adjustment in both axes Easy to use, very suitable for beginners Focal ratio F/9.3, therefore good for observing the planets and details on the moon 1.25 inch (31.7 mm) eyepiece focuser Two eyepieces and one barlow lens with 1.25 inch (31.7 mm) extension tubes for different magnifications Safe solar observation with the included solar filter Entry into astrophotography with smartphone camera adapter SCOPE OF DELIVERY Telescope Aluminium tripod Equatorial EQ3 mount Eyepieces: 4 mm and 20 mm (1.25 inch sockets) Barlow lens 3x (1.25 inch socket) LED illuminated dot finder Solar filter Smartphone camera adapter Accessory tray Astronomy software download Instruction manual

This sturdy compass with a centimetre and a measuring scale has a floating 360° scale and compass needle. The sight wire and slot offers exact sighting of land objects. A practical connector allows for snap hook attachment. FEATURESsturdy compasscentimetre and a measuring scalefloating 360° scale and compass needlesight wire and slotlug for attachment to a carabiner SCOPE OF DELIVERYcompassmanual

The BRESSER Field Tripod ST-3 is a solid and height-adjustable tripod with double tripod leg clamp and made of corrosion-resistant stainless steel. It is suitable for direct usage with the BRESSER Slider Binocular Mount. Adjust the extendable stainless steel tripod to the desired base height and thereby pre-select your favourite observation position. For example, for landscape observation while standing or sitting, the full tripod height should be used. For night sky observation, a lower setting is recommended to ensure a comfortable viewing position while sitting or lying down. The tripod is equipped with a standard GP mounting head and a central screw with metric M10 threaded shaft. It is also suitable for EXOS-1 and EXOS-2 EQ mounts. The upper tripod leg tubes have a diameter of 50.8 mm (2 inches).FEATURESFor usage with BRESSER Slider Binocular Mount Standard GP mount head Also suitable for EXOS-1 and EXOS-2 EQ mounts Solid stainless steel and aluminium structure Double tripod leg clamp Height adjustable approximately from 68 to 110 cm Tripod weight: 5.5 kg Transport length approximately 87 cmUpper tripod leg tubes have a diameter of 50.8 mm (2 inches)SCOPE OF DELIVERYTripod Accessory tray Central spindle

NOTE: This item is a used or returned product. This means: The item may show slight signs of use; some accessories may be missing; the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.