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BRESSER Sirius 70/900 AZ Refractor Telescope with Smartphone Camera Adapter

With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.

Here is the table of contents of the comprehensive BRESSER Telescope Guide:

Sky Guides by Bresser

The Sky Guide provides comprehensive information on constellations, planetary positions, and astronomical events – perfect for planning your observations and delving deeper into astronomy.
Visit the guide directly here to make the most of your observations!

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Product and safety instructions


Manufacturer: 
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede

Contact: 
www.bresser.de


Warning notes
  • Check the solar filter before every solar observation and ensure that it is not damaged. Hold it against a strong light source to detect any possible cracks and/or holes. Do not use the telescope for solar observation, even if the solar filter is only slightly damaged. In this case, contact the manufacturer for the appropriate replacement parts.
  • Always use the included solar filter when observing the sun. Make sure it is correctly attached to the telescope according to the instructions. The use of the solar filter is only intended in connection with this telescope.
  • Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
  • Check the secure fit of the solar filter before each solar observation. An accidental detachment from the objective opening can lead to immediate and permanent eye damage and blindness.
  • If the solar filter cannot be securely attached to the tube, improve the fit by placing several self-adhesive felt strips or similar between the solar filter and the objective opening. Never use the solar filter if it cannot be properly mounted on the telescope. In such a case, always contact our customer service first.
  • Be extremely cautious when observing the sun. A brief look through the unprotected optics will immediately cause severe eye damage, potentially leading to complete blindness.
  • Children should not look at the sun through the telescope, even with the filter properly installed. Never leave children unsupervised.
  • Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
  • Do not observe the sun after eye surgeries or other eye conditions without prior medical consultation.
  • Wrinkles/creases in the film are normal and do not indicate a product defect.
  • Do not expose the device to high temperatures.
  • BATTERY WARNING AND SAFETY Safe handling and use of batteries and accumulators Read and follow these instructions before using the battery or accumulator. To the extent permitted by law, failure to comply with these warnings and instructions may result in any damage caused to your product not being covered by the warranty. In this document, the term "batteries" also includes accumulators. Follow these instructions to ensure optimal safety and performance: DO NOT use counterfeit batteries in products. Only use supplied batteries. Use the battery SOLELY for its intended purpose. Keep batteries out of the reach of children and pets. DO NOT use batteries that appear to be damaged, swollen, or modified. Do not use batteries that are leaking, emitting a smell, swollen, melted, or showing dents, rust, cracks, or scratches. The battery should NOT be disassembled, crushed, punctured, shredded, or otherwise tampered with. The battery should NOT be exposed to liquids. Liquid may penetrate the battery's circuits, causing corrosion and compromising its safety. A wet or damp battery should NOT be dried with a device or heat source (e.g., hairdryer or microwave). The device or battery should NOT be placed near a heat source or direct sunlight. High temperatures can cause the battery to swell, leak, or malfunction. Examples include placing the device near a radiator, stove, kitchen appliance, iron, fireplace, or inside a vehicle or next to a window in direct sunlight. The battery should NOT come into contact with metal objects. If metal objects such as jewelry come into prolonged contact with the battery terminals, the battery may become very hot or catch fire. The battery should NOT be stored together with hazardous or flammable materials. Store the battery in a cool, dry, and well-ventilated area. The battery should NOT be inserted incorrectly when charging. MAKE SURE the battery compartment is empty, dry, and free of dirt before inserting the battery. The battery should NOT be charged in direct sunlight or at extreme temperatures. The battery must be charged at room temperature, typically between 20 °C and 26 °C (68 °F-79 °F). Charging may be temporarily suspended if the battery temperature exceeds 60 °C (140 °F). If the battery is hot but the temperature is under 60 °C (140 °F), the battery will still charge, but more slowly than usual. Avoid dropping the battery or the product with the battery inside. If dropped onto a hard surface, the battery or product may be damaged. If you suspect the battery might be damaged, replace it. Never leave your mobile hotspot plugged into the power supply for more than 24 hours to charge. Let the battery drain and then recharge it. Keeping your mobile hotspot plugged into a charger without draining the battery can damage the battery/device or affect performance. If a battery shows a significantly shorter runtime than when purchased, it has reached the end of its reasonable lifespan. We recommend replacing it. For optimal results and performance, batteries should be replaced after 12 months or earlier depending on usage. Follow local regulations for the disposal of used batteries. Do not throw the battery into fire or water.
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Accessories

OCULUM VERLAG - Fernrohr-Führerschein in 4 Schritten (GERMAN)
Please note that this astronomy book for beginners is only available in German.

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OCULUM VERLAG - Hobby-Astronom in 4 Schritten (German edition)
Please note that this astronomy book for beginners is only available in German language.

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BRESSER Amici Prism 90° 31.7mm/1.25"
An amici prism allows for a comfortable 90° viewing position and creates an erect image without left-right reversal. This makes it especially suitable for nature observations but it can also be very helpful with astronomical observations. Particularly beginners may find it easier to orientate in the sky when they compare the view through the telescope with what they can see with their naked eyes.With this  amici prism an astronomical telescope can be used as a powerful spotting scope.Suitable for refractor telescopes as well as Maksutov-Cassegrain style telescopes with 1,25" visual back.FEATUREScomfortable eye relief for refractor telescopes90°- viewing position and image without left-right reversalastronomical telescope turns to a powerful spotting scope1,25" visual backfully multicoated prismSCOPE OF DELIVERYAmici Prism 90° 31.7mm/1.25"

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Vixen NPL 50° Eyepiece 15mm (1.25'')
The 2-group 4-element Plossl optical design of the NPL series eyepieces delivers flat and clear images with good color correction. The lenses are fully multi-coated for high light transmission. FEATURES Push-fit Size: 31.7 mm Apparent field of view: 50° Eye relief: 11 mm Weight: 100 g WHAT'S INCLUDED 1x Eyepiece 15 mm (1.25'')

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Vixen NPL 50° Eyepiece 30mm (1.25'')
The 2-group 4-element Plossl optical design of the NPL series eyepieces delivers flat and clear images with good color correction. The NPL20, NPL25, NPL30 and NPL40 eyepieces employ twist-up eye-guards for viewing comfort. The lenses are fully multi-coated for high light transmission. FEATURES Push-fit Size: 31.7 mm Apparent field of view: 50° Eye relief: 24 mm Weight: 120 g WHAT'S INCLUDED 1x Eyepiece 30 mm (1.25'')

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BRESSER 10mm Plössl eyepiece 31,7mm/1,25"
BRESSER 10mm 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: 10 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

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£29.00*
BRESSER 6.5mm Plössl eyepiece 31,7mm/1,25"
BRESSER 6.5mm 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: 6.5 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

Available

£27.00*
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BRESSER 10mm Plössl eyepiece 31,7mm/1,25"
BRESSER 10mm 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: 10 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

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EXPLORE SCIENTIFIC Filter 1.25" Green No.56
The green filter is to increase the contrasts enormously between the red and the blue regions of the cloud structures on the gas planets Jupiter and Saturn. Seeing our Earth Moon through the green filter, the contrasts of each ray crater become clearly more visible.What ist a color Filter for and do we really need it ? Color Filters darken the light slightly, that reaches the eye or the sensor of the camera. This eliminates for instance stronger transitions. The result is that your picture turns out with more contrast which automatically shows more details.FEATURESMade from high-quality optical glassFilter glass is absolutely parallel All optical surfaces have anti reflex coatingsFilter housing from black anodized aluminumFilter threads on both ends (female/male)Multiple filters usage is possibleSCOPE OF DELIVERYColor filterProtection-case

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BRESSER JUNIOR Astro Planetarium
The BRESSER JUNIOR Astro Planetarium quickly transforms your ceiling into a starry sky. And then it’s time for you to go exploring: This home planetarium projects over 8,000 stars and 61 named constellations using 2 projection discs and a bright LED, bringing the universe into your home. Ever curious about the constellations visible on your birthday? Why not have a look? Just set the date and a time between 8 PM and 2 AM, because during this time there will always be stars in the sky. Then just switch on the children's planetarium and the night sky of your birthday lights up above you. For the best experience, maintain a 2-meter distance from the ceiling. This allows the projection to cover a substantial area of approximately 1.6 x 2.1 metres. A focusing wheel ensures the celestial display is crystal clear. This is not just for special occasions like Christmas or birthdays; it's a year-round gateway to the stars. Use the star projector to enjoy the night sky indoors If you've ever used a telescope, the most crucial tool for stargazers, you know that clear skies are essential. Cloudy skies can obscure your view of the heavenly bodies. With this home planetarium, however, weather is no impediment. Rain or snow, your exploration of astronomy continues indoors. Thanks to its built-in motor, the projected sky rotates automatically. A counter-clockwise rotation mimics the natural movement of the northern hemisphere, while a clockwise rotation aligns with the southern hemisphere's pattern. Choose from 6 speed settings to tailor your experience. The shooting star mode adds a dash of magic, bringing meteor trails across your ceiling. Drift off to sleep under the stars There's something incredibly soothing about falling asleep under a starlit sky. The sleep mode turns off the home planetarium automatically after 30 or 60 minutes. For longer enjoyment, let it run normally, and it will switch off after 2 hours to conserve energy. You'll likely be deep in dreams of cosmic adventures by then. Turn your home into a place for celestial explorations with the BRESSER JUNIOR Astro Planetarium. FEATURESStar projector suitable for children aged 14 and up Shooting star function Automatic shut-off (after 30, 60, or 120 minutes) Projection area of 1.6 x 2.1 metres (at a 2-metre distance) 1 bright, white LED Motion-enabled projection through dual motors offering 6 speeds Focusing wheel for clear images Night sky simulation on walls or ceilings, adjustable for specific dates and times More than 8,000 celestial bodies and 61 constellations on 2 projection discs Maximum projection distance: 3 metres SCOPE OF DELIVERYAstro planetarium 2x projection discs 3x AA batteries Instruction manual

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This reflecting telescope shows not only the big planets, but also bright deep-sky objects when you are observing under dark skies. Fully equipped, and with a mount that is easy to use, this telescope is ideal for a beginner that has no astronomical knowledge, but wants to immerse him or herself in space. Explore the moons and cloud bands of Jupiter or the majestic rings of Saturn, or find other galaxies, star clusters and nebula on a moonless night. Please note: Reflector telescopes with optical design “Newton” are very good for astronomical observing at the starry night sky. But these telescopes are not well usable for observing landscape and nature during daylight. Therefore we suggest refractor (lens) telescopes for landscape and nature observing. FEATURESreflector telescope for beginnersobservation of the planets and bright deep sky objectsaltazimuth mountSCOPE OF DELIVERYtelescopaltazimuth mount with tripodeyepieces (4 mm, 9 mm, 25 mm)finder scope 6x30erecting lens 1,5xBarlow lens 3x

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BRESSER JUNIOR Refractor Telescope 70/900 EL
Observing the stars like a professional - very easy with the BRESSER JUNIOR refractor telescope 70/700 EL. It is a complete system for the exploration of the wonders of the universe, consisting of telescope, mount, tripod and all accessories needed. With an aperture of 70 mm it reveils already many details of celestial objects. The mount can not only swing the telescope left / right and up / down, it can also be used in a so-called equatorial mode, as scientists do in their observatories (see further under Special features). An additional finder scope mounted on the telescope is useful for locating celestial objects. With the erecting lens many exciting things in the environment can also be seen during daytime. With the height-adjustable tripod, the telescope can each be brought to an optimal height for large or small observers. The supplied diagonal mirror ensures a comfortable viewing. At night the moon and planets may like Saturn and Jupiter can be explored. But thanks to the 70 mm wide aperture of the telescope also many celestial objects outside our solar system are within the reach of this telescope. Star clusters many light years away and nebula impress young and old stargazers. SPECIAL FEATURESMounting with wedge: At first glance, the NG mount of the refractor telescope 90/700 NG is a very ordinary azimuth mount: an axis for left / right and one for up / down, as we know it from normal camera tripods. This mode makes sense especially with observations during the day. With the built-in wedge it can be tilted, so the whole mount can be converted to an equatorial mount for astronomy with a single operation. For use of the equatorial mount an axis is aligned with the North Star. When tracking a celestial object only a single axis needs to be moved, which clearly is a relief compared to tracking an object on the night sky with mounts that only have left / right and up / down axis. FEATURESideal beginner's setsuitable for lunar, planetary and nature observationsmount can be used in two ways: alt-azimuth and equatorialSCOPE OF DELIVERYrefractor telescope 70/900three eyepieces: 4 mm (225x), 12 mm (75x) and 20 mm (45x)heigth-adjustable aluminium tripod with accessory tray1.5x errecting lens for a laterally correct and upright imageNG mountfinderscope 6 x 25astronomy software for PC90° diagonal mirror

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BRESSER SpaceExplorer 90/900 EQ3 Refractor Telescope
Discover the fascinating night sky - people have been drawn to the night sky since time immemorial. The BRESSER 90/900 Space Explorer telescope will show you the wonders of space. Thanks to the 90 mm aperture, the telescope collects 165 times more light than the human eye. The long 900 mm focal length brings the highlights of the night sky into view. Discover the Earth's natural satellite, the moon, take an optical trip to the planets, or journey past the solar system and discover the first bright deep-sky objects. The refractor telescope is mounted on a sturdy aluminium tripod to ensure maximum stability during your observations. There is also an accessory shelf for storing eyepieces, a Barlow lens and other accessories. You can also compensate for the Earth's movements to ensure that your celestial discoveries stay within the field of view: the equatorial EQ3 mount allows you to guide the telescope manually and follow your objects on their journey through the night sky. Space Explorer telescope - everything you need for a good view into space Designed for beginners and advanced observers, this telescope has everything that you need to explore space on clear nights. The red dot finder provides an easy way to orientate yourself in the night sky. Once you have set up the finder on the telescope, the small red dot will show you the direction in which your telescope is pointing. Once you have decided on an object, you can view it more detail with the three eyepieces. Marvel at Saturn's majestic rings and the gas giant Jupiter in different magnifications with the 4 mm, 12 mm and 20 mm eyepieces. On dark, moonless nights, the brightest gas nebula, galaxies and star clusters are also visible. If you're fascinated by the moon, simply screw the moon filter into the back of one of the eyepieces. This reduces glare and increases the contrast so that you can enjoy the Moon's stunning landscapes without being dazzled. You can also use the refractor telescope for terrestrial observations. Discover the wonders of nature and view distant animals up close!  Embark on a journey of discovery with the BRESSER 90/900 Space Explorer telescope! FEATURES Optical design: Achromatic refractor Objective lens diameter: 90 mm Focal length: 900 mm Collects 165 times more light than the human eye Simple tracking by hand Mount: EQ3, equatorial Tripod: Aluminium with accessory shelf DELIVERY CONTENTTubeEQ3 mountHeight-adjustable aluminium tripod3 eyepieces: 4 mm, 12 mm, 20 mmBarlow lens, 3x90° star diagonalMoon filterLED finder scope Smartphone-holderBattery (CR2032) Manual

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