EXPLORE SCIENTIFIC 1.25" S-II Nebula Filter 12nm

Besides air turbulence, the brightening of the night sky is the biggest obstacle to observing faint objects beyond the solar system. Street lamps and other artificial lighting mean that the sky in human settlements is no longer really black. This affects the contrast and thus the perception of deep-sky objects. Depending on the type of celestial object, however, part of disturbing artificial light can be filtered out, making it easier to observe fainter targets.The EXPLORE SCIENTIFIC CITY LIGHT SUPRESSION - or CLS - filter uses the fact that the artificial lighting is not evenly distributed over the entire spectrum. These colours - in the case of the EXPLORE SCIENTIFIC CLS nebula filter, above all the typical colours of mercury and high-pressure lamps, used in street lighting - are suppressed, but the emissions of deep-sky objects are allowed through. With a slightly brightened sky, some relatively bright deep-sky objects are practically invisible with a telescope, for example the large galaxy M101. Using this filter makes observation much easier. A must have for any visual amateur astronomer.  The CLS can also be used as a useful photographic filter - helping to improve the quality of your telescopic deep sky photos.The EXPLORE SCIENTIFIC nebula filters are delivered with an individual test report - so you can be sure of receiving high-quality filters.SPECIFICATIONS:eliminates disturbing light - e.g. from street lightingenables observation of faint deep sky objectsWHAT'S INCLUDED:1x nebula filter

Permanent preparations are ready made conserved preparations. For high contrast the most of them are stained.All preparations are labelled in German and English language. A list with all preparations is included.This set includes:Penicillium,W.M.Rhizopus Sporongia,W.M.Chlamydomonas,W.M.Pine Leaf,C.S.Leaf of Winter Jasmine,C.S.Corn Root Tip, L.S.Vicia Faba Young Root C.S.Corn Stem C.S.Corn Stem L.S.Cucurbita Stem C.S.Cucurbita Stem L.S.Basswood Stem C.S.Basswood Stem L.S.Pollen W.M.Daphnia Sp W.M.Hydra W.M.Paramecium W.M.Rotifer W.M.Honey Bee Mouth Parts W.M.Cardiac Muscle Sec.Skeletal Muscle L.S,C.S.Dog Small Intestine C.S.Spinal Cord C.S.Motor Neurons Cell W.M.Blood Smear HumanSCOPE OF DELIVERY25x prepared slidesCase with space for 100 slides total

This polarizing filter can be used for example at the Lunt Solar Systems 1.25" White-Light Herschel-wedge (0558211).FEATURESLinear polarizing filterFilter mount with 1.25" filter threadSCOPE OF DELIVERY1x 1.25" polarizing filter

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

The magnification of your telescope can be trippled with the use of this achromatic BRESSER Barlow Lens 3x 31.7 mm (1.25'').

Extend the operating time of your PULSAR Axion XM / Merger thermal imaging devices with an additional APS3 battery pack. The lithium-ion battery is fully charged in 3.5 hours and provides a capacity of 3200 mAh.FEATURESLithium-ion battery for Axion XM thermal imaging devices from PULSARCapacity: 3200 mAhNominal voltage: 3.7 VFull charging time: 3.5 hService life: minimum 300 cyclesPower supply range: 100–240 VSCOPE OF DELIVERY1x lithium-ion batteryUser manual

The BRESSER Special-Zoomar 12-36x70 Binoculars offer fascinating sharp images. The individual eyepieces are carefully tuned to each other, making the magnification continuously adjustable by means of zoom lever. Thanks to the FMC coated BaK-4 glass material objects at great distance can still be seen as clear images. The handy and ergonomic rubber armouring provides for a stable grip. The standard tripod thread and tripod adapter provided, make it simple to attach these binoculars to any photo-tripod. FEATURESPrisms and lenses made of BaK-4 glass materialOptical surfaces are green multi coated with 95% light transmissionHigh brightnessFoldable eyecupsCentre-wheel focusingTripod adapter threadRobust, rubber armoured binocular bodyVariable magnification range [ZOOM]SCOPE OF DELIVERYZoom binoculars Nylon bagCarrying strapTripod adapterProtective lens capsProtective eyepiece caps