• Electron beam gun evaporation with Ion assisted deposition coating technology for durability and resistance to scratching;as well as stability on CWL (central wavelength) no deviation affected by temperature change
• Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
• 90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm;500nm;SII672nm and H-beta 486nm
• 0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm
• Suitable for color CCD cameras and unmodified DSLR Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target

• 1.25"/2'' moon and skyglow filter is a multi band pass filter transmitting a high percentage of light in the visual spectrum;the filter enhances contrast when observing brighter objects including the moon and planets
• Telescope eyepiece cutting light pollution;the filter has a mild effect of darkening the background of the night sky so that the fainter objects are more clearly seen contrasted against the blackness of space
• The filter effectively filters out selective wavelengths of low pressure sodium and other man made sources typically used in street lighting;although it is not a nebula filter; it enhances the views of deep sky objects by increasing the contrast of these objects against the background sky
• Premium quality metal rim and thread with blue glass lens;the filter will fit all standard sized 1.25"/2'' eyepieces and accessories;it is mounted in a nicely anodized housing and is threaded on both sides for stacking with other filters if necessary
• Standard filter thread for any 1.25"/2'' telescope eyepiece and other accessory;comes with a plastic box to keep it safe and clean when not in use

• UHC filters or light pollution reduction filters are designed to selectively reduce the transmission of certain wavelengths of light;especially those produced by artificial light;
• Sky background is darker;and contrast of emission nebulae are noticeably improved;the perfect filter for viewing nebula from light polluted skies;or for boosting the contrast of nebula from dark sky sites;
• Due to its ability to produce exceptionally sharp and clear images;this UHC filter is considered one of the most popular astronomy accessories;it can be used not only for celestial observations but also for astrophotography;
• 1.25'' barrel diameter simply attach to eyepiece cased in a sturdy transparent case;standard filter thread for 1.25" eyepieces and other accessories;
• Optical glass lens;aluminum frame;significantly reduces light pollution;great for city and suburban observation.

The SVBONY SV133 is suitable for 1.25-inch eyepieces and for viewing with a T2-fitted single-lens reflex camera and CCD camera. Filters can be replaced very quickly, even when the camera is installed or the eyepiece is inserted.

• The SVBONY City Light Suppression broadband filter is designed to improve the visibility of various Deepsky objects. It selectively reduces the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings(including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere);
• Light Pollution Reduction UHC Filters are designed to selectively reduce the transmission of certain wavelengths of light specifically those produced by artificial light;
• Moon filter can reduce glare and increase contrast of the moon, so you could see more moon details, also useful for extra bright planets as well as terrestrial viewing over sand or snow.

Top Christmas Gift Ideas: Perfect Presents for Everyone!

• SV183 IR pass filter; Sufficient reduction of seeing effects; heightened contrast; The Filter can darkens the twilight sky background; allowing mages of moon and planets to be taken at dawn or dusk
• Sturdy standard 1.25-inch filter; SV183 filter measures 1.25 inches and is suitable for standard 1.25-inch equipment
• Sturdy construction; The filter frame is made of high-grade alumina metal material; which is durable
• In addition to astronomical uses; the IR-Pass filter can be used for nature photography in the Near-IR; revealing stunning differences in plants; sky; and clouds
• SV183 filter cell is made of lightweight; strong metal and is CNC machined; sand-blasted; black anodized; The result is a super thin filter cell that will produce a clear aperture of 26mm.

The VPL Filter has premium quality metal rim and optics glass lens . Reduce glare and increase contrast of the Moon with the Svbony 1.25”/2'' VPL Filters. Also useful for extra bright planets as well as terrestrial viewing over sand or snow. We provide you with two sizes to choose from, 1.25'' and 2''.

Note: This polarizing filter is too thick and not suitable for SV226 filter drawers. 

• SVBONY Sulfur II 7nm Extra Narrowband Filter transmits a 7nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions; including wavelengths of light that are responsible for light pollution
• Quality lens material;The SVBONY 2inch filters are made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength or CWL
• Rugged metal frame;The SVBONY filter cell is made of lightweight; strong metal and is CNC machined; sand-blasted; black anodized; and then laser engraved
• Standard 2-inch thread size; Metal filter cell threads directly into the 2- inch barrel of your telescope eyepiece
• SVBONY 2inch SII-CCD filter is for the astrophotography; lets you increase the contrast when photographing deep sky objects; It stands out better against the night sky background; letting you see detail that was not apparent before

• 7pcs filters set include most popular color planetary and moon telescope eyepiece filters;moon filter;CPL filter;5 color filters with 23A bright red;21 orange;12 yellow;56 bright green;82A bright blue;
• CPL filter is mainly used for elimination of polarized;and enhances the contrast of the moon and planets in photographic images;
• 5 color filters are an essential tool of the lunar and planetary;with red;green;blue;orange and yellow highlight features on Mars;Jupiter;and Saturn;
• High quality aluminum alloy frame and optical glass with standard 1.25” filter threads suitable for 1.25” eyepieces and other accessories;
• Moon and skyglow filter;Cuts down glare and brings out much more surface detail and gives you better contrast; It is a multi-band pass filter transmitting a high percentage of light in the visual spectrum; Effectively filters out selective wavelengths of low-pressure sodium and other man-made sources typically used in street lighting.

The SVBONY Filter is suitable for 2 inch eyepieces and for viewing with single-lens reflex camera and CCD camera (M48 to M42 adapter exclude). Filters can be replaced very quickly, even when the camera is installed or the eyepiece is inserted.

• The O-III filter completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized;increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting
• The filter made from high-grade glass with dichroic interference and antireflection coatings;not only useful at light-polluted sites; the contrast is also increased at dark sky sites;it can be used with all 2" eyepieces
• Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness;in many cases, they increase the contrast between nebula and night sky, not brightening the nebula
• The 2" O-III filter useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming. Allowing just for the Double Ionized Oxygen lines between 495.9nm to 500.7nm to pass through at 90%
• Astrophotographic;The filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; 2" filter allows high-contrast imaging even in areas with strong light pollution

• SV132 H-Beta eyepiece filter makes it possible to view the elusive Horsehead, California, and Cocoon Nebulas in dark skies;Great used with a moderate to large aperture telescope and clear dark skies
• Optical high precision double side polishing; Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces; Avoid halos
• Precision double-sided optical coatings improve transmission and cut-off depth; Executes with a transmission of over 90% and completely rejects light pollution
• High value transmission of pass-band and optical density of off-band is assured through planetary rotation system, a homogenous and precise coating procedure; The high optical quality of SV132 filters guarantees no loss in sharpness or contrast
• Filter with metal mount 1.25" filter threads; Threaded to fit 1.25" eyepieces and threaded diagonal barrels

• 1.25 inch moon filter reduce the amount of light entering the eyepiece and increase the eyepiece contrast
• The moon filter reduces the glare;allowing transmission of only 13 percent of the reflected ligh;which means you can see the surface more clearly and study the Moon in greater comfort
• Allow for maximum contrast of lunar detail enhances the contrast of the moon and planets in photographic images
• Neutral colored optical glass does not change the moon's natural color
• Have a standard 1.25 inch filter thread (M28.5 x 0.6);It's a great birthday christmas gift

• Sturdy standard 1.25-inch filter; SV164 dark frame imaging filter measures 1.25 inches and is suitable for standard 1.25-inch equipment; the filter frame is made of metal for durability
• Quickly capture dark frames to optimize photo quality; opaque filters block all light from the imaging camera sensor; help remove dark currents; especially in astrophotography; guarantee high-precision pictures
• Easily eliminate camera noise and hot pixels; Dark frame acquisition helps remedy such noise and "hot pixels" by canceling out these disruptive effects during image processing
• SV164 1.25-inch dark frame imaging filter is threaded and can be directly connected to your filter wheel; allowing you to achieve fast conversion between different filters; very convenient
• High quality packing box; the included foam-lined plastic case will keep your dark frame imaging filter safe during transport and storage

• SVBONY SV127 1.25 Inch four color eyepiece filter with M28.5*0.6 thread standard; you can use color filters to accentuate subtle details on planets, comets, and the Moon by selectively increasing contrast between features and markings of different hues
• #15 Deep Yellow Planetary Filter; Boosts contrast of lunar features;accentuates red and orange features on Saturn; Jupiter;and Mars; reveals low-contrast cloud detail on Venus
• #25 Red Planetary Filter; Enhances Martian surface details in large telescopes; reveals cloud definition on Venus;accentuates bluish cloud regions on Jupiter and Saturn
• #58 Green Planetary Filter; Enhances contrast of blue and red structures on Jupiter (including Red Spot);melt lines around Martian polar ice caps, accentuates Saturn's cloud belts
• #80A Medium Blue Planetary Filter; Enhances details in Jupiter's belts and Red Spot; high clouds and polar caps on Mars; lunar surface details; Venus cloud features

• 2" Eyepiece Filter; with metal mount 2" filter threads
• For Horsehead Nebula California; and Cocoon Nebulae in Dark Skies
• Mainly aimed at the 486nm (blue) line spectrum nebula; filters out the interference of other light; can improve the contrast of the nebula
• Through the use of filters; the Horsehead Nebula can be clearly seen; filter with metal mount 2" filter threads; threaded to fit 2" eyepieces and threaded diagonal barrels
• To see a sufficiently dark nebula; ensure a large enough luminous flux; needs to be observed with a large-aperture telescope

• The 1.25" O-III filter useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming. Allowing just for the Double Ionized Oxygen lines between 495.9nm to 500.7nm to pass through at 90%
• Astrophotographic;The filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; 1.25" filter allows high-contrast imaging even in areas with strong light pollution
• The filter made from high-grade glass with dichroic interference and antireflection coatings;not only useful at light-polluted sites; the contrast is also increased at dark sky sites;it can be used with all 1.25" eyepieces
• The O-III filter completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized;increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting
• Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness;in many cases, they increase the contrast between nebula and night sky, not brightening the nebula

• 1.25-inch neutral density lunar filters reduce the amount of light reaching the film without affecting color, and cut down on glare so you can see more lunar detail and surface features through your telescope;
• The included filter is made of high-definition optical glass with high-light transmittance;
• Aluminum alloy frame sealing ring for better sealing to prevent falling or loosening;
• Reduces distortion between light and dark areas at the edge of the moon, helping to preserve dark-adapted vision when viewing the lunar surface;
• Useful for different caliber astronomical telescopes through which the light of the Moon can be extremely overwhelming.

• Quickly capture dark frames to optimize photo quality; SV164 filter blocks all light from imaging camera sensors; help remedy camera noise and hot pixels; especially to ensure high-quality pictures in astrophotography
• 2 inch standard filter; SV164 dark frame imagin filter size is 2 inches; you can freely match all your equipment that accept standard 2 inch filter
• High-quality filter; SV164 dark frame imagin filter is made of metal; with black anodizing process on the outside; durable; no need to worry about fading and discoloration
• High-quality packaging box; the enclosed foam-lined plastic box secures the dark frame imaging filter during transportation and storage
• Various combinations; for example; the thread of the SV164 dark frame imagin filter can be directly connected to the filter wheel; Allows you to quickly switch between different filters; very convenient