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Nebula Filters

10 products

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    Astro Hutech: The IDAS HEUIB-II (H-alpha Enhanced UV IR Blocking) filter is designed for enhanced spectrum DSLR's and one-shot color CCD astronomical cameras.

    Besides removing the IR and UV ends of the spectrum which are often out of focus in refractive optics, it isolates the common H-alpha line relative to the surrounding extreme red end of the spectrum, making it easy to bring out the faint H-alpha emission nebulosity of astronomical photos, yet retain the background color balance of broadband photos.

    Available in 52mm and 48mm sizes mounted in standard camera filter rings, 37mm size mounted for the Canon MFA, and unmounted in 36mm and 49mm sizes. The filter is also available as a Nikon front filter.

    Some comparison shots taken with the enhanced Canon 6DH (standard Canon UV/IR blocking filter vs. HEUIB-II filter) show a clear difference both in background sky color balance and contrast of H-alpha nebulosity in the extremely faint object IC1396. Note the good background color balance as shown in the histograms of the individual color channels of the HEUIB-II filtered image.

    The HEUIB-II filter also returns normal daylight color balance to spectrum-enhanced cameras as can be seen in this photo at right taken with normal DSLR auto-white-balance (AWB) enabled.

    $169.00 USD
    3 in stock


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    Astro Hutech: The IDAS HEUIB-II (H-alpha Enhanced UV IR Blocking) filter is designed for enhanced spectrum DSLR's and one-shot color CCD astronomical cameras.

    Besides removing the IR and UV ends of the spectrum which are often out of focus in refractive optics, it isolates the common H-alpha line relative to the surrounding extreme red end of the spectrum, making it easy to bring out the faint H-alpha emission nebulosity of astronomical photos, yet retain the background color balance of broadband photos.

    Available in 52mm and 48mm sizes mounted in standard camera filter rings, 37mm size mounted for the Canon MFA, and unmounted in 36mm and 49mm sizes. The filter is also available as a Nikon front filter.

    Some comparison shots taken with the enhanced Canon 6DH (standard Canon UV/IR blocking filter vs. HEUIB-II filter) show a clear difference both in background sky color balance and contrast of H-alpha nebulosity in the extremely faint object IC1396. Note the good background color balance as shown in the histograms of the individual color channels of the HEUIB-II filtered image.

    The HEUIB-II filter also returns normal daylight color balance to spectrum-enhanced cameras as can be seen in this photo at right taken with normal DSLR auto-white-balance (AWB) enabled.

    $199.00 USD
    1 in stock


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    Baader: Baader UHC-S / L-Booster-Filter 1¼"

    • Visual and photographic UHC-S Nebula filter
    • Ultra High Contrast L Filter blocks city lights and increases contrast of Nebula
    • Planeoptically polished for the highest image quality.
    • Creates a much brighter image than a conventional Nebula filter.
    $93.67 USD

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    Baader: Baader UHC-S Nebula Filter 2"

    • Visual and photographic UHC-S Nebula filter
    • Ultra High Contrast L Filter blocks city lights and increases contrast of Nebula
    • Planeoptically polished for the highest image quality.
    • Creates a much brighter image than a conventional Nebula filter.
    $153.41 USD

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    Baader: Baader UHC-S Nebula Filter 50.4mm Round, L-Booster

    • Visual and photographic UHC-S Nebula filter
    • Ultra High Contrast L Filter blocks city lights and increases contrast of Nebula
    • Planeoptically polished for the highest image quality.
    • Creates a much brighter image than a conventional Nebula filter.
    $191.52 USD

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    Baader: 36mm Baader UHC-S DeepSky Filter
    Planeoptically Polished

    Planeoptically polished for the highest images quality. Produces a much brighter image with superb contrast than a conventional Nebula filter. Excellent for openings from 100mm.

    Baader UHC-S Nebula Filter with highest transmission and realistic star colours!
    A new class of LPR Nebula filters finally delivering the happy medium, with enough light for smaller telescope openings at the same time with the high contrast of classical UHC filter.

    Light pollution from street lights is blocked carefully. The filter is the sensible addition to all previous deep sky and UHC filters. Both for visual as well as photographic use.

    All filters produce a brighter image and are optically polished with ultra-hard dielectric coatings. They are absolutely scratch resistant and can be cleaned as often as needed, ideally with Baader Optical Wonder Cleaning Fluid.
    All Baader UHC-S DeepSky Filter
    1¼", 2", 50.4 mm, 50x50 mm

    ref baader : 2459420

    $109.12 USD

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    Baader: Baader UHC-S Nebula Filter 50x50 Square, L-Booster

    • Visual and photographic UHC-S Nebula filter
    • Ultra High Contrast L Filter blocks city lights and increases contrast of Nebula
    • Planeoptically polished for the highest image quality.
    • Creates a much brighter image than a conventional Nebula filter.
    $234.78 USD

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    Optolong: The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deep sky 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.

    $55.00 USD
    8 in stock


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    Optolong: The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deep sky 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.

    $85.00 USD
    7 in stock


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    Optolong: The Optolong CLS-CCD filter will improve contrast and increase the visibility of weak outer regions on most emitted, planetary and supernova residual nebulae from polluted locations in a color imaging camera.

    The infrared wavelength of 700-1100nm is cut on the Optolong CLS-CCD filter, which makes it different from the standard CLS filter and makes the CLS-CCD a photographic filter only. A separate IR-cut filter is not necessary when imaging with the CLS-CCD since the IR has already been cut.

    The Optolong CLS-CCD filter works by specifically reducing the transmission of wavelengths of light pollution, in particular the artificial type caused by vapors of sodium vapor and mercury vapor at high and low pressure. The use of a CLS-CCD filter will also increase the contrast by reducing the light radiation caused by the neutral oxygen emissions normally observed in the atmosphere.

    The Opterster CLS-CCD EOS APS-C Clip Filter consists of multi-layered Schott glass with ion deposition technology to ensure scratch resistance and stability on the central wavelength, or CWL. The filter cell is made of light and solid metal, CNC machined, sandblasted, black anodized and then laser engraved.

    Using a Clip Filter on Your Canon APS-C Camera

    The Optolong CLS-CCD clip filter can be inserted without tools; Simply use your fingers to insert or remove the filter. Once inserted correctly, it can not fall unintentionally.
    No modification of the Canon EOS DSLR case is required. All lens functions will work with the installed clip, including focus, screen and image stabilization,
    The Optolong fog filter prevents dust from settling on the sensor during long exposures.
    APS-C clip filters are compatible with EOS APS-C series cameras, including EOS 1100D / 600D / 60D, and so on. If you have a full frame EOS camera, Optolong also offers filters for these cameras.
    Optolong Clip filters do not work with the Canon EF-S series lenses. These lenses invade the interior space of the camera body that would normally be supported by the clip filter.
    To use the EOS / T2 and 2 "adapters to attach your camera to a telescope, you must first insert the Clip-Filter and then install the desired lens adapters.


    Transmission characteristics of the CLS-CCD filter

    95% transmission H-Alpha 656nm
    95% transmission OIII 496nm and 500nm
    95% transmission SII 672nm
    95% H-Beta transmission 486nm
    High transmission NII 654nm and 658nm
    0.1% Hg transmission at 435 nm and 578 nm
    0.1% Na transmission at 589 nm
    Blocks IR transmission 700-1100nm


    Quality filter materials:

    • Schott B260 substrate material from Germany, 1.0 mm thick
    • Anodized and CNC machined aero-metal filter cell to provide the largest net opening; Laser engraved to avoid fading
    • Several layers of cement-free anti-reflective coatings applied by evaporation from a gun to electron beams with ion assisted deposition
    • Optolong Filter Manufacturing Processes and Parameters
    • The filter substrate is optically polished at a 1/4 wave and parallelism <30 on both surfaces
    • The quality of the surface, according to MIL-O-13830, is 60/40
    • The main emission lines of nebulae have a transmission of 95%
    • Out-of-band transmission (main artificial radiation) is 0.1%
    • High-pass transmission of the bandwidth and out-of-band optical density is ensured by Optolong's planetary rotation system, a homogeneous and precise coating procedure
    • Each filter comes with a plastic housing with high-pressure EVA liner
    $115.00 USD
    1 in stock


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