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  1. TO - LP-2  Narrowband (Blue Cell)  2"

    TO - LP-2 Narrowband (Blue Cell) 2"

    LP-2 Narrowband (Blue Cell) 2" FilterEnhance your deep sky viewing with the latest in multi-layer coating technology. Thousand Oaks filters transmit desired wave-lengths in a very steep slope rather than ... Learn More
    Model#: LP2-2
    $179.00

  2. TO - LP-2  Narrowband (Blue Cell)  1.25"

    TO - LP-2 Narrowband (Blue Cell) 1.25"

    Thousand Oaks Optical LP-2 Narrowband (Blue Cell) 1.25" FilterEnhance your deep sky viewing with the latest in multi-layer coating technology. Thousand Oaks filters transmit desired wave-lengths in a very steep slope rather than ... Learn More
    Model#: LP2-1.25
    $89.00

  3. TO - LP-1  Broadband (Black Cell)  2"

    TO - LP-1 Broadband (Black Cell) 2"

    Enhanced deep sky viewing with the latest in multi ... Learn More
    Model#: LP1-2
    $149.00

  4. TO - LP-1  Broadband (Black Cell)  1.25"

    TO - LP-1 Broadband (Black Cell) 1.25"

    The Thousand Oaks Optical product line now includes ... Learn More
    Model#: LP1-1.25
    $89.00

  5. TeleVue - UHC Bandmate Filter 2 "

    TeleVue - UHC Bandmate Filter 2 "

    All Tele Vue filters are individually inspected for cosmetic and optical properties, as well as being serialized.The NebuStar Filter is a great general purpose filter for all nebulae observation ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: BFH-0200
    $315.00

  6. TeleVue - UHC Bandmate Filter 1.25"

    TeleVue - UHC Bandmate Filter 1.25"

    All Tele Vue filters are individually inspected for cosmetic and optical properties, as well as being serialized.

    The NebuStar Filter is a great general purpose filter for all nebulae observation.  Red-blocking properties permit brighter & sharper star images.

    ...
    Learn More
    Model#: BFH-0125
    $175.00

  7. TeleVue - OIII Bandmate Filter 2"

    TeleVue - OIII Bandmate Filter 2"

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: BFO-0200
    $315.00

  8. TeleVue - OIII Bandmate Filter 1.25"

    TeleVue - OIII Bandmate Filter 1.25"

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
    Model#: BFO-0125
    $175.00

  9. TeleVue - Bandmate Mars TYPE B Filter

    TeleVue - Bandmate Mars TYPE B Filter

    Bandmate™ Mars Type-B FilterThe Bandmate™ Mars Type-B filter is a high efficiency, single band dielectric coating that achieves penetrating views of the Martian surface. The surface appearance is similar to that of the popular #21 filter ... Learn More
    Model#: BMB-0125

    Regular Price: $205.00

    Special Price: $120.00

  10. TeleVue - Bandmate Mars TYPE A Filter

    TeleVue - Bandmate Mars TYPE A Filter

    Bandmate™ Mars Type-A FilterWe all know you can't have your cake and eat it too, but the Bandmate™ Mars Type-A filter lets you at least have a good taste! The Type-A is a dual band filter with different dielectric coatings on each side of t ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: BMA-0125
    $205.00

  11. SBIG - Baader 36mm SII Filter for FW5-8300 Filter Wheel
  12. Orion - OIII Nebula Telescope Filter 1.25"

    Orion - OIII Nebula Telescope Filter 1.25"

    1.25in ... Learn More
    Model#: 05581
    $105.95

  13. Orion - Moon Filter 13 percent Transmission 1.25"

    Orion - Moon Filter 13 percent Transmission 1.25"

    Cures Moon-Watching Washout and EyestrainThe Moon's disk, even at partial phases, is intensely bright with reflected sunlight. The glare washes out most of the craters, rilles, and other surface details from view ... Learn More
    Model#: 5662
    $19.95

  14. Opticstar 1.25" CRGbB Filter Set

    Opticstar - 1.25" CRGbB Filter Set

    These filters are positioned 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.

    ...
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    Model#: OSRCRGB

    Regular Price: $90.00

    Special Price: $85.50

  15. Optec - #8 Pale Yellow, 50mm diam. x 2mm thick.

    Optec - #8 Pale Yellow, 50mm diam. x 2mm thick.

    Does a better job blocking the violet and UV at the expense of ... Learn More
    Model#: 17231
    $30.00

  16. Optec - #47B Blue, 50mm diam x 2mm thick

    Optec - #47B Blue, 50mm diam x 2mm thick

    This filter is used for RGB imaging to pass the blue band ... Learn More
    Model#: 17236
    $30.00

  17. Optec - #29 Deep Red, mounted in 48mm threaded cell.

    Optec - #29 Deep Red, mounted in 48mm threaded cell.

    #29 Deep Red - Passes light longer that 610 nm. This filter is a little more effective than the #23A in dakening the sky ... Learn More
    Model#: 17437
    $45.00

  18. Optec - #23A Light Red,  50mm diam x 2mm thick

    Optec - #23A Light Red, 50mm diam x 2mm thick

    Blocks blue and green light completely, passes light longer than ... Learn More
    Model#: o17235
    $30.00

  19. Optec - #21 Orange, 50mm diam x 2mm thick

    Optec - #21 Orange, 50mm diam x 2mm thick

    Optec - #21 Orange, 50mm diam x 2mm thick ;Blocks blue completely and ... Learn More
    Model#: 17233
    $30.00

  20. Optec - #12 Yellow, 50mm diam x 2mm thick

    Optec - #12 Yellow, 50mm diam x 2mm thick

    Optec - #12 Yellow Wratten filter 50mm x2mm ... Learn More
    Model#: 17232
    $30.00

Items 21 to 40 of 287 total

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