EXPLORE SCIENTIFIC 2" S-II Nebula Filter 6.5nm

Explore Scientific's Sun Catcher Variable Large Aperture Solar Filtersadvanced 'Solarlite'Thousand Oaks Optical NOTE:ISO12312-2 Thousand Oaks Opticalapproved for direct observation of the Sun.SPEZIFICATIONSSpecial objective filter for safe solar observationsISO12312-2 ratedField-stop diameter 203mmFits to outer telescope tube diameter from 200 to 280mmQuick individual match with your telescope diameterFast Setup - Easy UseSCOPE OF DELIVERY1x Sun Catcher solar filter

One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects beyond the solar system enormously. Depending on the type of the celestial object, it is possible to dramatically increase the contrast by blocking annoying artificial light. The EXPLORE SCIENTIFIC UHC filter "zeros in" on the wavelengths of so-called emission nebulae. Those objects glow in special colours - their emission lines. Those emission lines are linked to chemical elements - in this case hydrogen at 486nm and 656nm, plus oxygen at 496nm and 501nm. The EXPLORE SCIENTIFIC UHC nebula filter blocks all other colour wavelengths (and thereby nearly all of artificial light) and only the emission line of the hydrogen and oxygen can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely invisible from, without filters. In suburban skies, for example the Owl-nebula M97, the Veil-nebula NGC 6992 or even the bright Dumbell-nebula M27 are not clearly visible. Using this filter allows you to see nebulae and their structures in much finer detail. A must for every visual observer. The Explore Scientific nebula filters come with a individual test certificate - your guarantee to receive a premium filter.

One of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lighting, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects beyond the solar system enormously. Depending on the type of celestial object, it is possible to increase the contrast dramatically by blocking the interfering artificial light. The EXPLORE SCIENTIFIC S-II filter uses the property of the so-called emission nebulae. These objects glow in certain colors, the so-called emission lines. The emission lines are associated with certain chemical elements - in this case ionized sulfur. The EXPLORE SCIENTIFIC S-II nebula filter blocks all other colors (and thus almost all artificial light) and lets only the emission lines of ionized sulfur at 672 nm through. The effect is amazing: suddenly, nebulae become visible in places that appear completely empty without the filter. In slightly brightened skies, many planetary nebulae, emission nebulae and supernova remnants can be seen without any difficulties using this filter. A must for every visual observer and for astrophotography.EXPLORE SCIENTIFIC nebula filters come with an individual test report - so you can be sure to get high quality filters.FEATURESSimplifies the observation of planetary nebulae, emission nebulae and supernova remnantsBlocks almost all artificial lightOnly lets the emission lines of ionized sulfur at 672 nm pass Transmission bandwidth: 12 nmAllows for more contrast in faint deep sky objectsIdeal for use near cities, in slightly brightened skiesIndividual test certificate included to guarantee you receive a premium filterSCOPE OF DELIVERY1x 2'' S-II nebula filter

Apart from air turbulence, the brightening of the night sky is the greatest barrier to observing faint objects beyond the solar system. Due to streetlamps and other artificial lighting, the sky in urban areas is no longer properly black. As a result, the contrast and thus the perception of deep-sky objects also suffer. However, depending on the type of celestial object, it is possible to filter out some of the interfering light making it easier to photograph the objects.The EXPLORE SCIENTIFIC H-Alpha filter uses the characteristic of the so-called emission nebulae. These objects glow in certain colors, the so-called emission lines. The emission lines are associated with certain chemical elements - in this case the red glowing hydrogen. This filter blocks all other colors (and therefore almost all artificial light) and lets only the emission lines of hydrogen through. Especially the interfering light of mercury and sodium vapor lamps is effectively blocked. The effect is amazing: suddenly, nebulae become visible on the photos in locations which appear completely empty without the filter.The EXPLORE SCIENTIFIC H-Alpha Nebula Filter has been developed for astrophotography exclusively. Especially in slightly light-polluted skies many emission nebulae only become visible and are shown in full expanse on astrophotos when using this filter. The H-Alpha nebula filters make astrophotography near the city possible and the use leads to amazingly good image results despite the existing light pollution. A must for every urban astrophotographer.The EXPLORE SCIENTIFIC nebula filters are delivered with an individual test report - so you can be sure to get high quality filters.FEATURESH-Alpha filters are used for astrophotography exclusivelyAllows photography of emission nebulae that glow in the light of red hydrogenMany of these emission nebulae are only visible in their full expansion in photos taken with this filterBlocks almost all artificial light, especially from mercury and sodium vapor lampsOnly allows the emission line of red hydrogen to pass throughTransmission bandwidth: 12 nmAllows more contrast and detail for all urban astrophotographersIdeal for use near cities, in slightly brightened skiesIndividual test certificate included to guarantee you receive a premium filterSCOPE OF DELIVERY1x 1.25'' H-Alpha Nebula Filter 

Practical stereo microscope set for group observations. This set combines the Analyth STR-Rino stereo microscope with the MikrOkular LF Full HD. Thus, observation with multiple people is guaranteed.The microscope in detailThe Analyth STR Trino features 3 different objective magnifications, which can be easily changed by rotating the objective. The magnifications 10x, 20x, and 40x can be switched directly. The stereo design shows structured objects particularly vividly and three-dimensionally. The low 10x initial magnification is especially suitable for working with children. This allows objects up to 20mm in size to be viewed completely. The Analyth STR is therefore particularly flexible in use. It is suitable for insects, plants, minerals, and much more, with applications in hobbies, schools, and professions. The stereo microscope can be used for quality control, horticulture and agriculture, aquatic science, and much more.The trinocular tube allows for the comfortable connection of a camera. The microscope is compatible (depending on the adapter) with microscope cameras, DSLR, and system cameras.Ask us which adapter you need.The interpupillary distance and diopter adjustment are individually adjustable. The eyepieces have a large field of view of 20mm. They are equipped with removable rubber eyecups and secured against removal.The microscope can be powered either by the power supply or by 3 batteries (not included). This makes it portable, for example, outdoors in the garden or on an excursion.FEATURES OF THE MICROSCOPEMicroscope with 3 objective pairs, objective magnifications 1x; 2x; 4xWide-field eyepieces with eyecups and 20mm field of viewTrinocular tube with 23.2 mm receptacleBright, energy-saving LED lightingIllumination for reflected and transmitted light separately switchableDimmer via membrane keys with status displayTwo object plates (black/white or frosted glass), with specimen clipsDust coverUser manualStand with LED lighting, separately or together switchable or dimmableSCOPE OF DELIVERY OF THE MICROSCOPEMicroscope with 3 magnifications, 10x; 20x; 40xTrinocular tube, adjustableMetal stand with LED lighting, power supply, and battery compartment2 eyepieces with rubber eyecupsGlass object platePlastic object plate (black/white)Dust coverUser manualThe microscope camera in detailThis full HD microscope camera allows you to take photos and videos directly with the microscope. The MikrOkular LF can be inserted either instead of an eyepiece or into the third tube of the microscope. With the included adapter rings, the camera can be used on practically all microscopes instead of an eyepiece. Only for microscopes with an integrated C-Mount camera connection is the photo adapter 30.5mm / C-Mount (item no.: 5942030) additionally required.The Windows software available for download is easy to use and therefore suitable for beginners. It includes not only image and video capture but also a measurement function. The software is optimal for documentation in hobbies, schools, studies, and professions.Compared to the MikrOkular Full HD, the integrated reduction optics achieve about seven times the field of view based on the area. The camera's field of view corresponds approximately to that of a 10x eyepiece, a student microscope.FEATURES OF THE MICROSCOPE CAMERAMetal housing, USB-C socketIntegrated reduction optics for a larger field of viewResolution: 1920 x 1080 pixels, Full HDFrame rate: up to 25 fpsPixel size: 3x3 µm, sensor size: 5.86 x 3.28 mm23.2 mm plug size, integrated UV/IR filter30 mm and 30.5 mm microscope adapterMultilingual recording software for WindowsImage formats: jpg, tif, pngVideo format: MP4SYSTEM REQUIREMENTSWindows 10 or 11Intel i3, i5, i7 or i9 processor from 6th generation or higher or AMD FX or Ryzen processor from 1st generationInternet connection for software downloadMin. USB 2.0 - (please use USB-A socket on the PC)SCOPE OF DELIVERY OF THE MICROSCOPE CAMERACamera module including dust coverUSB-C to USB-A cableCamLabLite software as download link, language versions German, English, French, Spanish, Catalan, Italian, Turkish, Polish, Portuguese, Bulgarian30 mm and 30.5 mm adapter ring