BRESSER Single Polarizing Filter 2"

The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4"(10.2cm) and larger. The ND96 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness. Very flat design, with only 5.0mm light path. FEATURESreduces brightness for a higher contrastideal for observing the mooncan be combined with other colour filtersvery flat design, with only 5.0mm light path SCOPE OF DELIVERY 1x Color Filter #ND96 Moon Filter (0.9 density; 13% transmission)

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

L-eXtreme Filter for deep sky nebula photography from the city The relentless spread or urbanization and its associated light pollution have become a growing problem for all amateur astro photographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters and a filter wheel. Especially with inexpensive but fast newtonian telescopes, double-lens ED refractors or even achromats, the L-eXtreme filters open up completely new possibilities for high-class astronomical images even from the light polluted city. CMOS cameras can deliver images like monochrome cameras. This new generation of filters makes it possible to take amazing astrophotos directly from the heavily light-polluted city with all its artificial light sources. The dual narrow bandpass for the wavelengths of O-III and H-Alpha and the almost complete attenuation of the interfering light sources of these new filters make this an ideal solution. L-eXtreme Description L-eXtreme is a two 7nm narrow bandpass filter which can be used with one-shot color cameras like DSLRs (digital SLR), color CMOS and monochrome CCD cameras. The convenience and cost-effectiveness of this filter allows amateurs to photograph rich emission nebulas, even in bright, heavily light-polluted skies. The L-eXtreme filter is the better choice for fast optical systems at a competitive price. It isolates the H-Alpha and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae are maximized. The design of our L-eNhance filter is a technical innovation among filters. For people who live in heavily light polluted areas or when the moon is out, the L-eXtreme is a very good choice. Main Use and Performance This new generation of filters makes it possible to take amazing astrophotos directly from the light-polluted city with all its artificial light sources. The narrow bandpass for the wavelengths of O-III and H-Alpha and the almost complete attenuation of the interfering light sources do not require very large or extremely expensive telescopes. No, especially with inexpensive but fast newtonian telescopes, double-lens ED refractors or even achromats, these filters open up completely new possibilities for high-class astronomical images. Furthermore, with these filters CMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras. WARNING: These nebula filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You will go BLIND if you ignore this warning. Coating technology L-eXtreme has a multiple anti-reflective coating on the optical substrate. The L-eXtreme filter uses a precision coating based on ion deposition coating technology. This ensures durability and scratch resistance as well as stability on the CWL (central wavelength), which is not affected by temperature changes. Absolute precision and homogeneity of the coatings as well as maximum values for transmission in the passband and optical density in the off-band range are guaranteed for all filters.  FEATURESProfessional photographic filter for astronomyImproves deep sky emission nebula photography Best choice for extreme light pollution suppression For taking pictures also from highly light-polluted areas Dual-narrow-band filter with high transmission for O-III and H-Alpha linesDoes not require very large or extremely expensive telescopesExcellent results also with fast inexpensive newtonian telescopes, double-lens ED refractors or even achromatsL-eXtreme filter is the better choice for fast systems at a competitive priceCMOS colour cameras can deliver an image quality that comes close to CCD monochrome cameras Filter diameter: 2.0 inches / 50.8 mmConnecting thread: M48x0.75mmSelected optical glass material Spectrum: 300-1000nm Off-Band Blocking: > 99 % Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate 1/4 wavefront and highest parallelism over the both surfacesHigh transmission at major nebula emission lines (i.e. H-alpha 656nm and OIII 496nm&500nm)SCOPE OF DELIVERY L-eXtreme filter (1 pc) Dust protection box (1 pc)

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 BRESSER Erudit Basic Mono is a versatile biological microscope. With its high quality optics it is the perfect choice for use in school or hobby. With battery powered LED lighting it can be used anywhere, e.g. for fieldwork or excursions. The microscope can be used on a great variety of subjects, for example thin sections, pond life, or blood smears. It is also a useful tool to look at parasites of pets and livestock (coccidia, helminths, skin and fur parasites).Three magnifications (40x, 100x, 400x) deliver good resolution to see small details. There is no need to work with immersion oil. The achromatic DIN objectives deliver sharp images with nice detail. The 40x objective is spring loaded to minimize the risk of damage to specimen or objective. The BRESSER Erudit Basic mono comes with a sturdy case for transport and storage, as well as with a smartphone holder for easy and convenient documentation of microscopic images and video.FEATURESType: Biological microscope, transmitted lightApplication: BiologyBattery powered long life LED light for mobile useCoarse and fine focus, coaxialCoaxial mechanical deskAdjustable Abbe condenser with diaphragm and filter holderComfortable eyepiece tube, 360° rotatableSturdy carry caseSPECIFICATIONSMagnifications: 40x, 100x, 400xAchromatic DIN-ObjectivesEyepiece barrel diameter 23,2mm, field number 18mmBattery powered LED lightSCOPE OF DELIVERYMicroscope body with LED lightWF 10x eyepieceAchromatic DIN-Objectives (4x, 10x, 40x)Abbe-Condenser N.A. 1,25, adjustable, with diaphragm and filter holderSmartphone holderCarry caseBox with preparations, empty slides and cover glasses

​Small 6x30 binoculars for solar observing in White-Light.This truly pocket sized binoculars with 6x magnification are only for solar observing. You can view and safely study large Sun-spots, transits and solar eclipses. The Sun's image shows in a pleasing  orange colour, rather in a harsh blue-white, as it does in some other white light filters.Lunt Mini SUNoculars have White-Light filter film installed inside the binoculars. This makes solar observation 100% safe. The light of the sun is reduced to a comfortable 0.00001% transmission and all ultra-violet and infrared components are completely and safely blocked.Lunt SUNoculars are manufactured to the same standards of safety typical to the entire family of Lunt Solar products - the premier manufacturer of Solar telescopes and filters.FEATURESMagnification: 6xObjective lens diameter: 30mmEye relief: 9mmTransmission: 0.00001% (OD5)Filter type: Solar film, CE certifiedLength: 105mmWidth: 110mmWeight: 160gSCOPE OF DELIVERYMini SUNoculars in blister packStrap