50mm Filters

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  1. Chroma Technology - 50mm x 50mm LRGB Filter Set - Square

    $1,085.00
    SKU: CHR-LRGB-50S

    Wait Time is 3-5 Days

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    FREE SHIPPING(48 States)
  2. Custom Scientific - UBVRI 50mm Square Filter Set

    $2,500.00
    SKU: CUS-UBVRI50S-SET

    Wait Time is 3-5 Days

    Custom Scientific UBVRI filters have been used in institutions and observatories around the world such as Kitt Peak, Mauna Kea, and the CTIO/Chile.

    FREE SHIPPING(48 States)
  3. Baader - H-Alpha 35nm CCD Filter, 50.4 x 3mm Round

    $214.00
    SKU: BAA-FHAL-RD50

    Wait Time is 3-5 Days

    Baader's new H-Alpha passfilter enables high-contrast deep sky images of H-II regions (such as the N. American Nebula).

    FREE SHIPPING(48 States)
  4. Baader - H-Alpha 35nm CCD Filter 50x50 x 3mm Square

    $264.00
    SKU: BAA-FHAL-SQ50

    Wait Time is 3-5 Days

    Baader's new H-Alpha passfilter enables high-contrast deep sky images of H-II regions (such as the N. American Nebula).

    FREE SHIPPING(48 States)
  5. Baader - Enforced 3.5nm H-Alpha Filter, 50x50 Square

    $640.00
    SKU: BAA-FHALNE-SQ50

    Wait Time is 3-5 Days

    Baader's New 3.5nm Narrowband Enforced H-alpha Filters  These three sizes of 3.5nm Enforced-Narrowband filters upen up the extremely narrow 3.5nm H-alpha world.

    FREE SHIPPING(48 States)
  6. Baader - UHC-S Nebula Filter 50.4mm Round, L-Booster

    $184.00
    SKU: BAA-FUHC-RD50

    Wait Time is 3-5 Days

    The Baader Planetarium UHC-S Nebula filter excels at delivering a high-contrast and natural view of emission nebula - without excessive dimming and loss of background star fields.

  7. Baader - Baader UHC-S Nebula Filter 50.4mm Square, L-Booster

    $226.00
    SKU: BAA-FUHC-SQ50

    Wait Time is 3-5 Days

    The Baader Planetarium UHC-S Nebula filter excels at delivering a high-contrast and natural view of emission nebula - without excessive dimming and loss of background star fields.

    FREE SHIPPING(48 States)
  8. Astronomik - ProPlanet 642 BP IR-Pass Filter - 50mm Round

    $129.95
    SKU: ASN-P642-50R

    Wait Time is 3-5 Days

    enhance contrast when used for lunar and planetary imaging, and third it will be a very good and low-priced H-alpha Filter for getting started in Deep-Sky
  9. Astronomik - ProPlanet 642 BP IR-Pass Filter - 50mm Square

    $159.95
    SKU: ASN-P642-50SQ

    Wait Time is 3-5 Days

    very good and low-priced H-alpha Filter for getting started in Deep-Sky Astrophotography of H-alpha regions.
  10. Astronomik - 6nm OIII MFR Narrowband Filter - 50mm Round Unmounted

    $449.95
    SKU: ASN-OIIICCD6-50R

    Wait Time is 3-5 Days

    The OIII line (501 nm) is located in the blue-green portion of the spectrum, making them very suitable for observing most planetary nebulae and supernovae remnants and other objects with doubly ionized oxygen.

    FREE SHIPPING(48 States)
  11. Optolong - SII CCD 12nm Filter - 50mm Unmounted

    $209.00
    SKU: OPO-SIICCD12-50U

    Wait Time is 3-5 Days

    The Optolong Sulfur II 12nm Narrowband Filter works by allowing a 12nm bandwidth of light, centered on the 672nm wavelength through, and blocking contrast-killing light pollution wavelengths from coming through.

    FREE SHIPPING(48 States)
  12. Optolong - SII CCD 6.5nm Filter - 50mm Square Unmounted

    $299.00
    SKU: OPO-SIICCD65-50SQ

    Wait Time is 3-5 Days

    The Optolong Sulfur II 6.5nm Extra Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and radically decreases other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural).

    FREE SHIPPING(48 States)
  13. Optolong - OIII CCD 6.5nm Filter - 50mm Square Unmounted

    $299.00
    SKU: OPO-OIIICCD65-50SQ

    Wait Time is 3-5 Days

    FREE SHIPPING(48 States)
  14. Custom Scientific - UBVRI 50mm Unmounted Round Filter Set

    $1,550.00
    SKU: CUS-UBVRI50-SET

    Wait Time is 3-5 Days

    Custom Scientific UBVRI filters have been used in institutions and observatories around the world such as Kitt Peak, Mauna Kea, and the CTIO/Chile.

    FREE SHIPPING(48 States)
  15. Custom Scientific - Luminance (IR-Blocked Clear) Filter - 50mm x 50mm Square

    $195.00
    SKU: CUS-LUM-50S

    Wait Time is 3-5 Days

    The Custom Scientific Luminance Clear assists in CCD imaging because it preserves the visual spectral wavelengths while suppressing the extra Infrared wavelengths picked up by CCD sensors that the human eye can't detect.

  16. Chroma Technology - 50mm LRGB and Ha/8-50 Set - Unmounted

    $1,305.00
    SKU: CHR-HALRGB-50

    Wait Time is 3-5 Days

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    FREE SHIPPING(48 States)
  17. Chroma Technology - 50mm x 50mm LRGB Filter and Ha/8-50 Set - Square

    $1,525.00
    SKU: CHR-HALRGB-50S

    Wait Time is 3-5 Days

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    FREE SHIPPING(48 States)
  18. Astrodon - 50mm Unmounted Photometric UVBRIc Square Johnson/Cousins Rc Edge Blackened Filter

    $440.00
    SKU: ADO-RC-50S

    Wait Time is 3-5 Days

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.  H. Johnson in the 1950s and A.W.J. Cousins in the 1970s designed these filters for photomultiplier tubes (PMT).

    FREE SHIPPING(48 States)
  19. Astrodon - 50mm Unmounted Narrowband Square NII 3 nm Filter

    $1,250.00
    SKU: ADO-NII3-50S

    Wait Time is 3-5 Days

    Narrowband (NB) filters  enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII),

    FREE SHIPPING(48 States)
  20. IDAS - Hutech - 50mm Unmounted LPS Filter

    $189.00
    SKU: ASH-LPS-P2-50

    Wait Time is 3-5 Days

    Light pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae.

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