Search query: optolong l-enhance filter - 2

Product: Optolong 1.25" 10mm Dual Threaded L-Enhance Dual Narrowband Light Pollution Filter (H-Alpha and H-Beta/O-III)
Brand: Optolong
Description: This filter is identical to the 1.8mm Optolong L-eNhance filter, with one difference - it is threaded on both sides of the filter, allowing you to thread the filter into the imaging train like an adapter ring or extension tube and connect it to the next component in the train. It is 7.6mm thick excluding threads and 10mm with threads. If using in a filter wheel or filter drawer, ensure that the system can accommodate 10mm filters. The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and 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. L-eNhance provides an economical and practical solution for amateurs. It is a dual band-pass narrowband filter which has been designed for DSLR (digital SLR), color CMOS and CCD Astrophotography Cameras. The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies. According to the characteristics of celestial body emission lines and the light pollution spectrum, Optolong specially designed and optimized dual-band L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution. Substrate: B270 Thickness: 1.85mm Tpeak: T>90% Blocking range: 300-1000nm Blocking depth: Light pollution line blocking >99% Surface quality: 60/40 Transmitted Wavefront RMS: λ/4 Parallelism (arcsec): 30s
Excellent Light Pollution Suppression. Threaded on both sides of the filter
Image in Urban Areas and Under Moonlight
Take One-Shot Color Images with Superior Color Fidelity
Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III
DUAL THREADED: Can be Used Threaded to 2" Camera Nose Piece/Adapter Rings/In-Line etc. For Filter Drawer or Filter Wheels Verify They Support 10mm 2" Filters As They May Be Too Thick
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Product: Optolong 2" L-Enhance Dual Narrowband Light Pollution Filter (H-Alpha and H-Beta/O-III)
Brand: Optolong
Description: The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and 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. L-eNhance provides an economical and practical solution for amateurs. It is a dual band-pass narrowband filter which has been designed for DSLR (digital SLR), color CMOS and CCD Astrophotography Cameras. The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies. According to the characteristics of celestial body emission lines and the light pollution spectrum, Optolong specially designed and optimized dual-band L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution. The Optolong L-eNhance filters have threads on one side - they can be used with filter wheels, filter drawers, focusers with a place to thread focal reducers internally (such as some Moonlite focusers) and camera nose pieces that fit into compression rings but the filter should not be threaded into the imaging train like an adapter ring with threads on both sides. Substrate: B270 Thickness: 1.85mm Tpeak: T>90% Blocking range: 300-1000nm Blocking depth: Light pollution line blocking >99% Surface quality: 60/40 Transmitted Wavefront RMS: λ/4 Parallelism (arcsec): 30s
Excellent Light Pollution Suppression
Image in Urban Areas and Under Moonlight
Take One-Shot Color Images with Superior Color Fidelity
Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III
Can be Used with Filter Wheel, Filter Drawer or Camera Nose Piece
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Product: Optolong 1.25" L-Enhance Dual Narrowband Light Pollution Filter (H-Alpha and H-Beta/O-III)
Brand: Optolong
Description: The relentless spread of urbanization and its associated light pollution have become a growing problem for all amateurs and 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. L-eNhance provides an economical and practical solution for amateurs. It is a dual band-pass narrowband filter which has been designed for DSLR (digital SLR), color CMOS and CCD Astrophotography Cameras. The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies. According to the characteristics of celestial body emission lines and the light pollution spectrum, Optolong specially designed and optimized dual-band L-eNhance filter in order to retain the prominent color of nebula RGB while blocking out most of light pollution. The Optolong L-eNhance filters have threads on one side - they can be used with filter wheels, filter drawers, focusers with a place to thread focal reducers internally (such as some Moonlite focusers) and camera nose pieces that fit into compression rings but the filter should not be threaded into the imaging train like an adapter ring with threads on both sides. Substrate: B270 Thickness: 1.85mm Tpeak: T>90% Blocking range: 300-1000nm Blocking depth: Light pollution line blocking >99% Surface quality: 60/40 Transmitted Wavefront RMS: λ/4 Parallelism (arcsec): 30s
Excellent Light Pollution Suppression
Image in Urban Areas and Under Moonlight
Take One-Shot Color Images with Superior Color Fidelity
Narrowband Filtering Passes Hydrogen-Alpha, Hydrogen-Beta and Oxygen-III
Can be Used with Filter Wheel, Filter Drawer or Camera Nose Piece
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Product: SVBONY SV115 Telescope Filter O-III Filter Narrowband Cuts Light Pollution Filter for Astronomy Telescope (2 inch)
Brand: SVBONY
Description: Narrowband OIII filter is designed for nebula observation allowing 18nm bandwidth of light centered on a wavelength of 500nm through,
which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor,
and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).

Features:
Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces.

Suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants.

Suitable for viewing on bright nebulae like M42 Orion Nebula in heavy light pollution.

Use with a large aperture telescope under clear and dark viewing conditions with good seeing.

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.

Thin metal cells have a clear aperture of 26mm for 2" filters

Each filter comes with a plastic case with high pressure EVA case lining

Specification:
Blocking area: 400-700nm
Transmittance: 90% at 495.9nm and 500.7nm
FWHM: 18±2nm
Thickness: 1.85mm
Surface quality: 60/40 (Refer to MIL-O-13830)
Diameter:2 inch

WARNING:
The filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH this FILTER. You would be BLIND if you fail to observe the warning.

Package Includes:
1 x SV115 O-III 2" filter
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
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Product: SVBONY Telescope Filter H-Alpha 7nm 2 inches Filter Narrowband Astronomical Photographic CCD Filter Color Filter Set for Deep Sky Photography
Brand: SVBONY
Description: H-Alpha is 656nm mainly through the high permeability of the spectrum, and 656nm spectrum of the color presented by the red-based,
300-1100nm cut-off depth to get the details of the launch nebula richer. Extremely narrow bandwidth allows only the 656nm band to pass through the filter,
can effectively cut off the artificial light Na lamp and Hg lamp interference to make the transmission line through,
so as to improve the nebula contrast. With CCD is better choice for deep sky photography and wide-field astrophotography

features
high precision double sided polishing
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

other attributes
Precision double-sided optical coating,non-two-piece glue,effectively improve the transmittance and cut off depth;
electron gun evaporation technology;laser engraving LOGO never fade;

Ion source assisted coating technology
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

Note:7nm narrowband filter is not suitable for visual viewing. The human eye cannot capture such a narrow bandwidth band, and only a high-sensitivity camera can recognize it.
Package Includes:
1xSVBNOY 2 inch H-Alpha 7nm
1xPP Material Plastic Box
High cutoff the light damage and other stray light interference
Using Germany imported glass, using double-sided polishing processing;carton PP environmentally friendly materials, simple and beautiful
For the emission line 656nm transmittance of 85% or more;lined with double-layer EVA damping cotton
The narrow band filter,even in areas where light pollution is heavy,and the full moon (the moon's largest and brightest) is the same,very narrow bandwidth, which reduces the interference of the external environment,but the haze and cloudy the weather is not possible
Precision CNC integrated molding;multi layers anti reflection coating;frame with high-quality aluminum alloy material;anodized extinction treatment
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Product: SVBONY Telescope Filter H-Alpha 7nm for Canon EOS-C Clip Filter Narrowband Astronomical Photographic CCD Filter for Deep Sky
Brand: SVBONY
Description: H-Alpha is 656nm mainly through the high permeability of the spectrum, and 656nm spectrum of the color presented by the red-based；
300-1100nm cut-off depth to get the details of the launch nebula richer. Extremely narrow bandwidth allows only the 656nm band to pass through the filter；
can effectively cut off the artificial light Na lamp and Hg lamp interference to make the transmission line through, so as to improve the nebula contrast；
With CCD is better choice for deep sky photography and wide-field astrophotography

high optical quality
Precision double sided optical coating,non-two-piece glue, effectively improve the transmittance and cut-off depth

Ion source assisted coating technology
To improve the density of the film to ensure that the filter wavelength to minimize
the impact of temperature caused by the temperature drift

good treatment
Optical equipment professional fine sandblasting and anode treatment,the box to do extinction treatment to prevent reflection

suitable the Camera Type
The SVBONY CLS EOS -C Filter is suitable the Camera Type for: 60D/60DA, 7D Mark II, 80D/800D, 77D/70D/760D/750D/700D 650D/600D, 550D/500D,
400D, 100D/1100D/1200D/1300D. Notes, this Filter is not for EF-S camera Lens

other attributes
for the emission line 656nm transmittance of 85% or more;Precision CNC integrated molding;Multi-layers anti-reflection coating;
Frame with high-quality aluminum alloy material, anodized extinction treatment

Package Included：
1xSVBNOY EOS-C H-Alpha 7nm Filter
1xPP Material Plastic Box
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
High cutoff the light damage and other stray light interference;electron gun evaporation technology
Using germany imported glass;using double-sided polishing processing
High uniformity planetary wheel coating fixture to improve the uniformity of the filter wavelength
The narrow band filter;even in areas where light pollution is heavy;and the full moon (the moon's largest and brightest) is the same; very narrow bandwidth;which reduces the interference of the external environment
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Product: Neewer 1.25 inches Telescope Moon Filter, CPL Filter, 5 Color Filters Set(Red, Orange, Yellow, Green, Blue), Eyepieces Filters for Enhancing Definition and Resolution in Lunar Planetary Observation
Brand: Neewer
Description: NOTE: The telescope is not included

Description

The set includes a Moon and Skyglow Filter, a CPL Filter and 5 Color Filters(Red, Orange, Yellow, Green, Blue).

Moon and Skyglow Filter

It cuts down glare and brings out much more surface detail and gives you better contrast.

CPL Filter

It filters out scattered light, enables you to cut through reflections and see the detail behind it. It tones down the brightness of the lunar surface so you can enjoy optimized contrast of the moon.

5 Color Filters

Includes Red Filter, Orange Filter, Yellow Filter, Green Filter and Blue Filter.

Red Filter

Used in large telescopes, it sharpens boundaries and increases contrast on Mars, sharpens belt contrast on Jupiter, and brings out surface detail on Saturn.

Orange Filter

It helps increase contrast between light and dark areas, penetrates clouds, and assists in detecting dust storms on Mars. It also helps bring out the Great Red Spot and sharpen contrast on Jupiter.

Yellow Filter

It helps in viewing Mars by bringing out the polar ice caps, enhancing blue clouds in the atmosphere, increasing contrast, and brightening desert regions. It also enhances red and orange features on Jupiter and Saturn and darkens the blue festoons near Jupiter's equator.

Green Filter

It enhances frost patches, surface fogs, and polar projections on Mars, the ring system on Saturn, belts on Jupiter and works as a general-purpose filter when viewing the Moon.

Blue Filter

It provides detail in atmospheric clouds on Mars, increases contrast on the moon, brings out detail in belts and polar features on Saturn, enhances contrast on Jupiter's bright areas and cloud boundaries. It also helps split the binary star Antares when at maximum separation.

Package Contents

1 x Moon and Skyglow Filter

1 x CPL Filter

5 x Color Filters(Red, Orange, Yellow, Green, Blue)
PLEASE NOTE: The telescope is not included. Kit includes: (1)Moon and Skyglow Filter; (1)CPL Filter; (5)Color Filters: Red, Orange, Yellow, Green, Blue; Designed to reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue
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
CPL FILTER: By utilizing a CPL filter, which filters out scattered light, you are able to cut through those reflections and see the detail behind it; Enhances the contrast of the moon and planets in photographic images
STANDARD 1,25-inch THREAD SIZE: 1.25 inches/ 3.17 centimeters thread size, fits for most of telescopes; Color filters have the grooves needed to be softly screwed into the eyepieces lens easily
5 COLOR FILTERS: Includes Red, Orange, Yellow, Green, Blue; Red: Helps make Mercury and Venus stand out from the blue sky when viewed during the day; Orange: Helps increase contrast between light and dark areas, penetrates clouds; Yellow: Helps greatly in viewing Mars by bringing out the polar ice caps; Green: Enhances frost patches, surface fogs, and polar projections on Mars; Blue: Helps split the binary star Antares when at maximum separation
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Product: Telescope 1.25" UHC Ultra High Contrast Narrow Bandpass Filter
Brand: Gosky
Color: 1.25" UHC Filter
Boosts contrast in any environment.
Significantly reduces light pollution.
Standand filter thread for 1.25" eyepieces and other accessories.
Metal frame and made of optical glass
Provides superb views of the Orion, Lagoon, Swan and other extended nebulae.
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Product: Orion 5659 2-Inch SkyGlow Broadband Eyepiece Filter
Brand: Orion
The SkyGlow filter enhances deep-sky observing in moderately light-polluted skies
2" eyepiece filter blocks the most common wavelengths of light pollution for increased contrast and better view quality
SkyGlow improves the views of nebulas, galaxies and star clusters, especially when viewing in areas with light pollution from streetlights and sources
Ideal for backyard astronomy observing when you don't have time to trek to a dark sky site
2" filter designed for use with 2" telescope eyepieces. Metal filter cell construction.
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Product: Neewer 12 x 12-Inches Pack of 8 Transparent Color Correction Lighting Gel Filter in 8 Different Colors
Brand: Neewer
Color: Multicolor
Contains 8 sheets in 8 different colors, including red, yellow, orange, green, purple, pink, light blue, dark blue; Please don't attach the gel filters to modeling lamp or it will be melted
Made of high light transmission materials with light weight, steady color temperature and low loss
Color filters are used for lighting effects and color correction, involving additive and subtractive color, color mixing, color transmission, absorption and filtering of the different wavelengths of light
Use combinations of these filters to create different effects; Perfect for Photo Studio Strobe Flash Light LED Lights
Colored gels for lights used in film, video, photo, stage, theater, party, and DJ lighting.Note: the strobe light is not included
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Product: Astromania 1.25" Narrowband NBPF Hydrogen-a 12nm Filter - deep Sky Photos in H-Alpha Light
Brand: Astromania
Color: 1.25" NBPF Hydrogen-a 12nm
Description: Astromania 1.25" Narrowband NBPF Hydrogen-a 12nm Filter. Astrophotography under a light-polluted night sky can be difficult. The solution is an H-alpha filter. The Astromania H-alpha cut-off filter works to filter out a large part of this light pollution. This convenient filter only allows 12nm bandwidth of light centered on a wavelength of 656nm to pass through, which means it blocks a large part of the scattered light and also blocks the light from artificial mercury and sodium-vapour lamps. Young stars embedded in the bright red of a nebula - an H-alpha filter is the expert if you want to capture hydrogen nebulae in all their glory. The Astromania H-aplha cut-off filter enhances the contrast between object and sky, allowing you to take good quality images even under urban skies. Metal filter cell threads directly into the 1.25-inch barrel of your telescope eyepiece. Mounted in a nicely anodized housing.
Astrophotography under a light-polluted night sky can be difficult. The solution is an H-alpha filter. The Astromania H-alpha cut-off filter works to filter out a large part of this light pollution.
Allowing 12nm bandwidth of light centered on a wavelength of 656nm to pass through, 90% transmission at H-alpha line 656nm - whether under dark skies or under the sky glow of a city. That means the filter also blocks the infamous stray light and light from mercury and sodium vapour lamps.
Young stars embedded in the bright red of a nebula - an H-alpha filter is the expert if you want to capture hydrogen nebulae in all their glory.
The Astromania H-aplha cut-off filter enhances the contrast between object and sky, allowing you to take good quality images even under urban skies.
Metal filter cell threads directly into the 1.25-inch barrel of your telescope eyepiece. Mounted in a nicely anodized housing.
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Product: Astromania 2" Multiple 5-Position Filter Wheel for Telescope - Allowing You to Image Without Any Reflections or Stray Light
Brand: Astromania
Description: This 2" filter wheel lets you use up to 5 different filters and change them within just a few seconds. Whether for astrophotography or visual observing - your filters are always ready to use. Use the filter wheel with UHC, OII, CLS and other filters, for example - which lets you quickly and easily find the best filter when visually observing.Imagine you have a camera mounted on the telescope and have to switch between different filters and quickly as possible. This is only possible using a filter wheel. A handy rotary wheel offers you incredibly fast switching between up to 5 different filters. Each filter position is designated by a number, which lets you know which filter is currently in the beam path.Open the filter wheel and screw up to 5 different filters into it. These can be RGB and luminance filters for astrophotography or wide-band and narrow-band filters for visual observing. You can also leave your filters mounted in the filter wheel, as they are optimally protected from dust and damage there.The telescope side of the filter wheel comes supplied with a 2" adapter, allowing you to quickly and easily attach it to your focuser. The filter wheel also has a T-2 thread on the telescope side for other adapters. On the accessory side, you will also find a T-2 and M48 thread. You can connect your camera or eyepiece connector here.The filter wheel interior is absolutely light-tight - allowing you to image without any reflections or stray light.
Filter positions indicated by the numbers 1-5, takes any standard 2" filter. It's very sturdy aluminum housing makes it also suitable for heavy cameras, accessory-side T-2 and M48 threads. The presented hexagonal wrench may have problems in size. It is recommended to use a formal wrench purchased at a hardware store.
This 2" filter wheel lets you use up to 5 different filters and change them within just a few seconds, you can also leave your filters mounted in the filter wheel, as they are optimally protected from dust and damage there.
The telescope side of the filter wheel comes supplied with a 2" adapter, allowing you to quickly and easily attach it to your focuser. The very short design also permits the use of devices with short back focus such as Newton or Dobson telescopes.
The filter wheel interior is absolutely light-tight - allowing you to image without any reflections or stray light. It's construction is impermeable to light and thus ensures reflection-free astrophotography.
Please note: your focuser will require 22mm of inward focusing distance from the normal focus position to compensate for the thickness of the filter wheel.
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Product: Orion 05594 2-Inch 13 Percent Transmission Moon Filter (Black)
Brand: Orion
Color: black
Helps reduce the bright glare of the Moon so you can see more lunar detail and surface features with your telescope
2 inch Moon filter with metal filter cell construction threads directly into the barrel of a 2 inch telescope eyepiece
Especially useful for large aperture telescopes through which the bright Moon surface can be overwhelming
Transmits just 13 percent of the incoming light to your eye, enhancing your view
Neutral filter will not alter the natural color of the Moon in your views
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Product: Baader Planetarium Moon and Skyglow Filter - 2" FMS-2
Brand: Baader Planetarium
Description: The Baader Planetarium Moon & Skyglow (Neodymium) filter brings an entirely unique approach to planetary contrast enhancement and light pollution reduction. Based on earlier research at Carl Zeiss, Baader has developed a new filter that uses Neodymium glass which filters out a few specific wavelengths from streetlights as well as skyglow from the Moon. The unique spectral characteristics of Neodymium also boost color contrasts by isolating the Red, Green, and Blue regions (so-called RGB enhancement). The result is a filter that leaves natural colors mostly intact, but significantly enhanced.
Planetary and Lunar views are improved in all scopes, reflectors, refractors (APO or Achro). Jupiter's Great Red Spot and ruddy hues of the bands are noticeably enhanced, and contrast of Martian surface features significantly boosted. The Background sky is darkened, and subtle details improved. The filter's high efficiency preserves image brightness, and many Galaxies, Nebulae and Globular Star Clusters are improved due to the reduction of skyglow from artificial lighting.
The high quality of Baader Planetarium filters permits stacking with no image degradation. Achromat owners will find the combination of Moon & Skyglow and the new Fringe Killer filter to be ideal for planetary viewing. The high light throughput and natural coloration will make achromats perform more like an apochromat. An integrated version is also now available, the Semi-APO filter.
The filter substrate is a special custom melt of Neodymium doped glass, designed for specific transmission characteristics, and made only for Baader Planetarium. In addition to it's unique spectral characteristics, unlike most filters, the Baader Moon & Skyglow surfaces are optically polished to deliver the best possible image sharpness and contrast.
The images below demonstrate the large contrast improvement on Mars. The image on the
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Product: Celestron 93623 Narrowband Oxygen III 1.25 Filter
Brand: Celestron
The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light
Made in China
Package Dimensions : 3.0 L x 1.0 H x 3.0 W (inches)
Package Weight : 1.0 pounds
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Product: UHC (Ultra High Contrast) for 2”/45mm Eyepiece
Brand: Light Pollution Filters
Description: The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing 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 (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.
Suitable for color CCD cameras and unmodified DSLRs
UHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.
UHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42)
Light pollution 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.
WARNING: The filters are not designed for sun observation. DO NOT LOOK AT THE SUN WITH FILTER. You would be BLIND if you fail to observe the warning.
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