EXPLORE SCIENTIFIC Teleextender 5x 31,7mm/1.25"

The visual effect of these new 4,5mm 82° LER eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience.  Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with foldable eyecups make handling and using in the field easy. As experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. 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.Comfort, Quality, Value. The Explore Scientific 82° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience.  These extreme wide field eyepieces are optimized to produce high contrast and high resolution characteristics.SPECIFICATIONSLarge eye distance, large field and great image sharpnessExcellent viewing position for people with glassesExcellent field sharpness even with fast optics82° 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 DELIVERY82° EyepieceDust coversProtective bag

One eyepiece for every occasion, with very good field correction and large field of view.The BRESSER Zoom Eyepiece Deluxe covers the large focal length range from 8 to 24 mm. These are also the focal lengths most frequently used with most telescopes. Especially for instant observations, where you don't want to pack a whole suitcase full of eyepieces, the zoom eyepiece is a good choice. The Deluxe version offers with its particularly advanced optical design with 9 elements in 6 groups an even better field correction and sharpness, combined with a large apparent field of view of 40 up to 62 degrees.Always the ideal magnification on handA quick turn and the ideal magnification for you is set. The adjustment is stepless from 8 to 24 mm focal length. This eliminates the need to always change eyepieces.Comfortable viewingThe BRESSER Zoom Eyepiece Deluxe offers a large comfortable eye relief (LER) of 20 mm to the eyepiece lens. This means a comfortable view even during longer observation, an important criterion especially for people wearing glasses. The rubber eyecup can also be individually adjusted by a twisting movement.Advanced optical designTo achieve the best possible image over the entire focal length range, a particularly advanced optical design with 9 lenses in 6 groups is used. The full multi-coating on all lens surfaces also guarantees maximum light transmission. To effectively suppress unwanted reflections, all lenses are carefully blackened at the edges. Thus, the image produced offers the maximum possible contrast and image brightness.Compact and solid designThe BRESSER Zoom Eyepiece Deluxe is made entirely of black anodised aluminium. It has an extremely solid and high-quality material appearance and is long-lived, even with extensive use. The precise zoom mechanism can be adjusted safely through the rubberised adjustment ring. A white laser engraving with focal length and pointer arrow shows the current focal length setting even in low light.Achievable magnifications with common telescope focal lengths350mm: 44 - 15x400mm: 50 - 17x500mm: 63 - 21x650mm: 81 - 27x750mm: 94 - 31x900mm: 113 - 38x1000mm: 125 - 42xFEATURESDeluxe version with even better field correction and sharpnessLarge apparent field of view 40 up to 62 degreesZoom eyepiece with stepless focal length adjustment from 8-24 mmOne eyepiece covers a wide focal length rangeStepless adjustment to ideal magnificationQuick adjustment of magnification without changing eyepiecesComfortable eye relief of 20 mm (LER = long eye relief)Adjustable rubber eyecup to adjust to ideal interpupillary distanceAlso very suitable for eyeglass wearersCompact and solid designMade entirely of black anodised aluminiumAluminium dust cap with threadVery high-quality material appearancePrecise and robust zoom adjustment mechanismRubberised grip surface for zoom adjustmentWhite laser engraving with focal length and pointer arrowFocal length range 8-24 mm freely adjustableOptical design: 9 lenses in 6 groupsAll lens surfaces have full multi-coatingEyepiece sleeve diameter: 1.25 inches / 31.7mmFilter thread in sleeve: M28 x 0.6 mm (standard 1.25'' filter thread)Eyepiece weight: 315 gLength of eyepiece: 102 mmDiameter: 52 mmColour: blackSCOPE OF DELIVERYDeluxe zoom eyepieceMetal dust cap for eyepiece lensPlastic dust cap for eyepiece sleeve

Universally usable variable polarizing filter with a  1.25" filter thread.This variable polarizing filter allows for a continuous adjustment of the image brightness. This is very helpful to level strong differences in contrast of different observation objects individually. Particularly for lunar and planetary observations but also for solar observations this filter prevents an outshining of details.Solar observations ONLY together with an adequate solar filter !!! Particularly when a Herschel wedge is used and with large objective lens apertures the use of the variable polarizing filter can reduce the brightness of the observation object to a confortable level. The large adjustment range of 40% to 1% light transmission and the neutral grey filter effect create a comfortable and unadulterated image.The handling is very simple. The desired filtering level is set by turning the two sides of the housing against each other.A 1.25" filter thread on both sides (female/male) allow for the simultaneous use of additional colour filters.FEATURESvariable polarizing filterindividually adjustable image brightnessmade from high-quality optical glassblack anodized aluminium housing1.25" filter thread on both sidesSCOPE OF DELIVERYpolarizing filterprotective box

The new BRESSER Messier 12" Dobson enhances this well-liked telescope series while providing great portability due to its lightweight fibreglass telescope tube. Despite its low price, it offers a variety of functions as well as quality that you would not find in considerably more expensive devices. Thanks to the powerful telescope aperture of 305 mm, you get significantly more light-gathering capacity than with the smaller models and are therefore not limited to observing the moon and the planets of our solar system - you can already look far out into the universe and observe globular clusters, nebulae and galaxies with even greater brightness. Details become visible in most deep-sky objects: globular clusters are clearly resolved into individual stars and gas nebulae, which can only be guessed at with smaller devices, show structure. The device is unrivalled in its versatility: The excellent large Hexafoc focuser has an aperture of 65 mm - so there is no noticeable obstruction from the focuser tube even with large wide-field eyepieces. Thanks to the large altitude wheels, even these heavier eyepieces are held effortlessly. And if a particularly large number of accessories is attached, such as a binocular attachment, then the entire tube can be moved inside the tube clamps - and everything is balanced again in a flash. The unrivalled rigidity of the focuser makes focusing easy - so photography with this tube is also possible. This is another strength of this universal telescope: if you want to take photos, you can simply unscrew the altitude wheels from the tube and attach it to an equatorial mount using a dovetail bar - so there's nothing standing in the way of astrophotography. An optional 10:1 gear reduction for the focuser is available for the highest demands. Considering that the focuser is the most frequently used part of the telescope, the use of the Hexafoc in this device is a quantum leap for this price range. With the initial equipment, you can start observing immediately - a 6x30 finder and a 25 mm SPL eyepiece are included in the scope of delivery. Various other viewfinder types can also be retrofitted using the 2 new hybrid viewfinder shoes (Art. 0620158) supplied as standard. In addition, the new 12" BRESSER Messier makes it easy to transport the device as compactly as possible - the rocker box can be dismantled in a few simple steps because the parts are assembled with metal quick-release connectors. This quickly turns a bulky rocker box into a handy flat package of individual parts. A telescope whose versatility, performance and user-friendliness set new standards in this price class. Includes a high-quality objective solar filter for safe observation of sunspots, eclipses and planetary transits. A BRESSER premium telescope for night and solar observation. NOTE: Please note that "Newtonian" reflector telescopes are very good for astronomical observations in the starry sky, but are not well suited for nature and landscape observations during the day. We therefore recommend BRESSER refracting telescopes for nature and landscape observations. FEATURESType: Reflector telescope Telescope for night and solar observation Lightweight but very stable GRP telescope tubePrimary mirror diameter: 12" (305 mm) parabolic main mirror Focal length: 1,525 mm Aperture ratio: f/5 Maximum useful magnification: 610x Theor. resolving power: 0.45 arcseconds Easy to balance the tube by sliding it inside the tube rings Visual limiting magnitude: 14.5 mag Tube: GRP tube with adjustable tube rings and aluminium altitude bearings Focuser: 2.5" HEXAFOC focuser with 2" and 1 1/4" adapter Shifting-free focusing even with heavy accessories Secondary mirror bracket: very thin 4-arm steel spider Tube rings and altitude wheels made from aluminumDifferent sized adjustment and counter screws on the mirror cell Use of the optics also on EQ mounts (with optional dovetail bar) Mount: Dobsonian system Dismantlable rocker box Accessory tray for one 2" and two 1 1/4" eyepieces, mounted on the front side Eyepiece: BRESSER Super Plössl 25 mm (1 1/4") Viewfinder: 6x30 viewfinderHybrid viewfinder shoes (Art. 0620158) included (2 pcs)Tube weight without accessories: 16 kgTube weight with accessories: 18.9 kg Rocker box weight: 14.8 kg Total weight: 33.7 kg Overall dimensions: 60 x 60 x 163 cm SCOPE OF DELIVERY Tube with Newtonian optics Aperture solar filter 6x30 viewfinder Hybrid viewfinder shoes (2 pcs)25 mm Super-Plössl eyepiece (Ø 31.7 mm / 1.25") 1 extension tube 37.5 mm for 2.5" Hexafoc 1 eyepiece adapter Ø 31.7 to 50.8 mm 2 tube rings 2 altitude wheels Rocker box with 2 base plates and mounting material (disassembled for self-assembly) Shipping dimensions Box 1: 150 x 53 x 50 cm - 24 kg Shipping dimensions Box 2: 61 x 61 x 24 cm - 17 kg

With the introduction of the 68° Series we are pleased to make two important improvements in eyepiece manufacture, the first being 15 layer Enhanced Multi-layer Deposition (EMD™) coatings on all glass-to-air surfaces to gain maximum contrast, and waterproofing the eyepiece with the use of Argon gas purging instead of standard Nitrogen gas. Although Nitrogen is a fine choice that will last for many years, Argon is a larger molecule that maintains its protective properties over a wider range of temperatures, and is even more resistant to diffusion thereby further extending the protective waterproof environment of the eyepiece body. Through computer-optimized design, a careful selection of optical glasses, and enhanced multi-layer deposition coatings, the Explore Scientific 68° Series™ eyepieces produce long eye-relief and ensure high image-correction, a flat field, and high contrast across the entire image field. An excellent choice for those who make extended visual studies of detail with subtle variations of brightness, and for those who must wear glasses while observing. All 68° Series eyepieces are fully EMD (Enhanced Multi-Layer Deposition) coated and edge-blackened to produce superior contrast.

The visual effect of these new 8,5mm 82° LER eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the averted vision technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with foldable eyecups make handling and using in the field easy. As experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. 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.Comfort, Quality, Value. The Explore Scientific 82° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. These extreme wide field eyepieces are optimized to produce high contrast and high resolution characteristics.SPECIFICATIONSLarge eye distance, large field and great image sharpnessExcellent viewing position for people with glassesExcellent field sharpness even with fast optics82° 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 DELIVERY82° EyepieceDust coversProtective bag