• 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

• Optical high precision double sided polishing to ensure that the parallelism is higher than 30 inch and high flatness 1/4λ; to ensure that does not affect the image quality
• Precision double sided optical coating;non two piece glue;effectively improve the transmittance and cut off depth
• Ion source assisted coating technology (IAD), to improve the density of the film to ensure that the filter wavelength to minimize the impact of temperature caused by the temperature drift
• High uniformity planetary wheel coating fixture to improve the uniformity of the filter wavelength
• Optical equipment professional fine sandblasting and anode treatment;the box to do extinction treatment to prevent reflection

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

• 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

• 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

• 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

• 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

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.

• 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

• Help you watch the moon comfortably; The 1.25" Neutral Density Moon filter can reduce the amount of light reaching the film without affecting the color; and reduces glare so you can see more lunar detail and surface features with your telescope
• Durable Material; The included filters are made of HD optical glass; Good level of transmittance; Aluminum alloy frame sealing ring for better tightness; avoiding fall or loose
• Protect vision; ND4 filter transmits only 25% of the incoming light; help reduce radiation; reduce deformation between light and dark areas at the edge of the moon; help protect dark-adapted vision when viewing the moon's surface
• Suitable for watching the crescent moon; As the Moon moves around the Earth; we get to see more and more of the illuminated half; and we say the Moon is waxing; At first we get a sliver of it; which grows as days go by; This phase is called the crescent moon; It's very good effect to use the ND0.6 filter at this time
• Applicable standard 1.25 inch; Metal filter cell threads directly into the 1.25 inch barrel of your telescope eyepiece; Let you achieve a sharper image directly; 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