Happily Serving You in the Same Location for Over 58 Years!

Welcome!

Filters

Items 1 to 20 of 990 total

per page
Page:
  1. 1

Set Descending Direction
  1. Astrodon - Tru-Balance E-Series Filters

    Astrodon - Tru-Balance E-Series Filters

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

    ...
    Learn More
    Model#: E Series Tru Balance

    Starting at: $450.00

  2. IDAS Hutech SCT Filter adapter w/48mm Nebula Filter II

    IDAS - Hutech - SCT Filter adapter w/48mm Nebula Filter II

    The IDAS LPS-V4 filter is designed to provide maximum contrast between key astronomical emission lines and a light polluted sky. These filters incorporate IDAS MBT, UFP, and IGAD technologies to insure undegraded and extremely durable optical performance.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: LPS-V4-48SCT
    $275.00

  3. IDAS - Hutech - 52mm Nebular Filter II

    IDAS - Hutech - 52mm Nebular Filter II

    The IDAS LPS-V4 filter is designed to provide maximum contrast between key astronomical emission lines and a light polluted sky. These filters incorporate IDAS MBT, UFP, and IGAD technologies to insure undegraded and extremely durable optical performance.

    ...
    Learn More
    Model#: LPS-V4-52
    $189.00

  4. IDAS - Hutech - 48mm Nebular Filter II

    IDAS - Hutech - 48mm Nebular Filter II

    The IDAS LPS-V4 filter is designed to provide maximum contrast between key astronomical emission lines and a light polluted sky. These filters incorporate IDAS MBT, UFP, and IGAD technologies to insure undegraded and extremely durable optical performance.

    ...
    Learn More
    Model#: LPS-V4-48
    $189.00

  5. IDAS Hutech 28.6mm Nebular Filter II

    IDAS - Hutech - 28.6mm Nebular Filter II

    ... Learn More
    Model#: LPS-V4-28.6
    $189.00

  6. IDAS Hutech 28.6mm Nebula Filter

    IDAS - Hutech - 28.6mm Nebula Filter

    "A chain is only as good as its weakest link." This well-known truth applies to many "chains", including the optical chain, which includes a telescope, eyepiece, and filter.

    ...
    Learn More
    Model#: LPS-V3-28.6
    $59.00

  7. IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    Hutech LRGB filter set for QSI 500 series cameras.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: RS-31
    $575.00

  8. FLI - 7 position CFW (for 65mm square filters)

    FLI - 7 position CFW (for 65mm square filters)

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CFW-10-7
    $2,795.00

  9. Astrodon - Narrowband - 36mm Unmounted OIII 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted OIII 3 nm Filter

    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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: OIII3-36R
    $650.00

  10. Astrodon - Narrowband - 36mm Unmounted SII 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted SII 3 nm Filter

    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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: SII3-36R
    $650.00

  11. Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 nm Filter

    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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: HA3-36R
    $650.00

  12. Opticstar - 1.25" High Transparency Imaging Filters

    Opticstar - 1.25" High Transparency Imaging Filters

    These high transparency filters from Opticstar are placed within a thin metal ring with a full 26mm clear aperture that threads into the barrel of any standard 1.25" eyepiece or filter wheel that can accept 1.25" filters.

    ...
    Learn More
    Model#: OSRHRGBI

    Regular Price: $150.00

    Special Price: $142.50

  13. Opticstar - 1.25" Infra-Red Cut-Off Imaging Filter

    Opticstar - 1.25" Infra-Red Cut-Off Imaging Filter

    For the use in CCD imaging this high-transmission filter will exclude any IR wavelengths beyond H-alpha showing a very steep desirable curve.

    ...
    Learn More
    Model#: OSRIFIR

    Regular Price: $45.00

    Special Price: $42.75

  14. Opticstar - 2" Nebula Deep Sky Filter

    Opticstar - 2" Nebula Deep Sky Filter

    This Opticstar 2" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.

    ...
    Learn More
    Model#: OSRIFNEB2

    Regular Price: $105.00

    Special Price: $99.75

  15. IDAS - Hutech - 28.6mm (1-0.25" eyepiece) LPS filter (formerly part #LPS-P31.7)

    IDAS - Hutech - 28.6mm (1-0.25" eyepiece) LPS filter (formerly part #LPS-P31.7)

    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.

    ...
    Learn More
    Model#: LPS-P2-28.6
    $179.00

  16. IDAS - Hutech - 48mm (2" eyepiece) LPS Filter

    IDAS - Hutech - 48mm (2" eyepiece) LPS Filter

    48mm (2'"' eyepiece) LPS filter

    ...
    Learn More
    Model#: LPS-P2-48
    $189.00

  17. TO - Full Aperture R-G Solar Film Filters

    TO - Full Aperture R-G Solar Film Filters

    The R-G Solar film by Thousand Oaks Optical now brings superior solar imaging to the amateur astronomer. The question may come up as to why? R-G Solar Film emphasizes more on the natural yellow and orange colors of the Sun which is what makes the viewing so extraordinary. Last but not least, R-G Solar Film offers high resolution even at high magnification!

    ...
    Learn More
    Model#: RG Full Aperture

    Starting at: $49.00

  18. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: g'2-50S
    $440.00

  19. IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    IDAS - Hutech - 1.25" Jupiter and Saturn Methane Filter

    This filter is used to image Jupiter and Saturn. The bandpass enhances contrast in the methane band.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: BPF
    $395.00

  20. IDAS - Hutech - 1.25" Venus Filter

    IDAS - Hutech - 1.25" Venus Filter

    This filter is used for imaging Venus (increases contrast for lower atmosphere cloud structures).

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: VW-1
    $495.00

Items 1 to 20 of 990 total

per page
Page:
  1. 1

Set Descending Direction