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B08FBFMWFL Price: $14.99 Score: 1000.000 Category: Electronics Rating: 4 Votes: 8 Find similar products Optical Glass Cube Dichroic Beam Splitter Prism Ratio 50:50 Spectrome Sicence 20X20X20MM. 1. Material: H-K9L 2. Surface Quality: 40/20 3. Surface Flatness: N4@633nm 4. Beam Deviation: <3 arc min 5. Coating: Ts,p45+5% Rs,p45t5% Ts-Tpl<10%, Rs-Rp/<10% Absorption avgs10% AR Coating, Ravg<0.5% 6.Splitting Ratio:50:50 7.Broadband transparent 400nm-700nm 8.Size: 202020mm 9.Features: Polarization Beam Splitter-to split a beam into 2 beams with orthogonal polarization. Light-path reversed, PBS is always used to couple 2 beams with orthogonal polarization into one. 10.Package:1 pcs 202020mm.	B07Q86RY1C Availability: Currently unavailable Score: 6.135 Category: Electronics Rating: 4.2 Votes: 5 Find similar products Baader Planetarium 2 MPCC V-1 Mark III Newton Multi Purpose Coma Corrector, Visual and Photographic Set. Coma corrector for Newton telescopes, that neither reduces the focal length nor the image field of your telescope. Large parabolic mirrors are perfectly apt for Deep Sky imaging since they deliver a very large field and enable very short exposure times. However this comes at the price of off axis coma and some residual astigmatism. Coma will distort off axis stars into comets which effectively reduces the usable field considerably. Many companys offer various lens systems as solution to counteract coma, most at the downside of increasing the original focal length and reducing the field of view. An f4 optics may become an f4.5.
B07BGTYHJF Availability: Currently unavailable Score: 5.714 Category: Electronics Rating: 4 Votes: 1 Find similar products APM 2 Erect Image Prism Diagonal with Fast Lock. The APM 2 Erect Image Prism Diagonal with Fast Lock and Ultra Broadband Coating Produced by APM Telescopes, this 2 Erect Image Prism Diagonal provides the finest in optical quality! This erect image prism for Astronomical Observation offers the highest accuracy for maximum magnifications and image brightness, thanks to its new Ultra Broadband compensation. With a 46mm free aperture, it boats the largest opening on the market, allowing use with all 2 eyepieces without vignetting. The APM 2 Erect Image Prism is precisely CNC milled, sure to inspire you with its build form. This Erecting Prism comes with the APM 2 inch Fast Lock to keep your optical instruments secured and fastened by a centering clamping mechanism, while at the same time ensuring an exact alignment on the optical axis with every view! Each APM 2 inch Erect Image Prism Diagonal will include an adapter for 2/1.25 applications.	B0018IOZDG Price: $79 Score: 5.650 Category: Electronics Rating: 5 Votes: 3 Find similar products Baader Planetarium Yellow 495nm Long-Pass Filter, 2 Eyepiece. The Baader Planetarium FCFY-2 Yellow Long-Pass Filter has a bandpass at 495 nm and is designed for 2 eyepieces. It has 98% transmission efficiency and is superb for bright planet and cometary details. It can be placed anywhere in the optical path without introducing astigmatism or other defects. Baader Planetarium astronomy filters by far supersede the mediocre quality of common flame polished color filters. A fine optical polish and 2 mm thick glass allows these filters to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way.Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass. The filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length.The front crown incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light.Light is the hottest commodity for all planetary observation. Especially during high magnification wo.
B0047DBCHG Availability: Currently unavailable Score: 5.405 Category: Electronics Rating: 4 Votes: 2 Find similar products Zhumell 2 inch High Performance Ultra High Contrast UHC Filter. These narrowband filters are for viewing nebulae in the deep sky under a dark sky or a sky with some light pollution. They filter out specific wavelengths of light to create a high contrast to make nebulae clearer and more visible where normally we may not be able to see it with our eyes alone.	B07V7B98DT Price: $69.99 Score: 5.348 Category: Electronics Rating: 4 Votes: 12 Find similar products Astromania 1.25 H-Alpha Night Sky Filter. The Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 80% or above. The filter is used as an extreme anti light-pollution filter, and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared. The 1.25 Night Sky Hydrogen-Alpha Filter, threads into the nose-piece of industry-standard 1.25 Digital Imagers. The Astromania H-Alpha cut-off filter enhances the contrast between object and sky, allowing you to take good quality images even under urban skies.
B07KYVLW7G Availability: Currently unavailable Score: 5.348 Category: Electronics Rating: 4.5 Votes: 155 Find similar products JZENT 20mm Optical Glass Prism RGB Dispersion Prism Physics Light Spectrum Educational Model Outdoor Take Pictures Camera Filter Photo Photography Tool K9-02. .	B01EL9G626 Price: $25.99 Score: 5.319 Category: Electronics Rating: 4.7 Votes: 52 Find similar products Astromania 1.25 IR/UV Blocking Filter - Keeps Your Planetary Images Sharp. This Astromania filter only allows the visible light between 400 and 780nm through. The UV and IR regions of the spectrum are completely blocked.
B083FX75FK Price: $15.81 Score: 5.291 Category: Electronics Rating: 4.1 Votes: 33 Find similar products Serounder Diagonal Lens,1.25 90 Degree Optical Glass Astronomical Telescope Diagonal Mirror Erect Image Lens with Dust Cover for Telescope Eyepiece. Specification: Condition: 100% Brand New Item Type: Erect Image Lens Material: optical glass Interface size: 1.25 inches (31.7mm) Viewing Angle: 90 degrees Weight: approx. 79g Package List:1 x Erect Image Lens.	B07CN5W3Y5 Price: $9.98 Score: 5.076 Category: Electronics Rating: 4.1 Votes: 103 Find similar products MerryNine 6 Optical Glass Triangular Prism for Physics Teaching Light Spectrum, Photography, Rainbow Maker, Sunshine Catcher, 150mm with Gift Box (150mm with Gift Box). .