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  1. 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
    Model#: BMA-0125

    Available - Ships in 2-4 Days

    5% off

    Regular Price: $205.00

    Special Price: $194.75

  2. 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

    In Stock

    5% off

    Regular Price: $205.00

    Special Price: $194.75

  3. 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

    Available - Ships in 2-4 Days

    $89.00

  4. 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

    Available - Ships in 2-4 Days

    $149.00

  5. 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

    Available - Ships in 2-4 Days

    $89.00

  6. 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

    Available - Ships in 2-4 Days

    $179.00

  7. TO LP-3 OIII (Green Cell) 1.25"

    TO - LP-3 OIII (Green Cell) 1.25"

    ... Learn More
    Model#: LP3-1.25

    Available - Ships in 2-4 Days

    $89.00

  8. TO - LP-3  OIII (Green Cell)  2"

    TO - LP-3 OIII (Green Cell) 2"

    ... Learn More
    Model#: LP3-2

    Available - Ships in 2-4 Days

    $179.00

  9. TO - LP-4  H-Beta (Red Cell)  1.25"

    TO - LP-4 H-Beta (Red Cell) 1.25"

    Thousand Oaks Optical LP-4 H-Beta (Red 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#: LP4-1.25

    Available - Ships in 2-4 Days

    $89.00

  10. TO - LP-4  H-Beta (Red Cell)  2"

    TO - LP-4 H-Beta (Red Cell) 2"

    LP-4 H-Beta (Red 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#: LP4-2

    Available - Ships in 2-4 Days

    $179.00

  11. 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.

    ...
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    Model#: OSRIFNEB2

    In Stock

    $99.75

  12. Opticstar - 1.25" 13% Moon Filter

    Opticstar - 1.25" 13% Moon Filter

    1.25" Moon Filter with 13% light transmission from Opticstar.

    ...
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    Model#: OSRMN13

    Available - Ships in 2-4 Days

    $14.25

  13. Opticstar - 1.25" 25% Moon Filter

    Opticstar - 1.25" 25% Moon Filter

    1.25" Moon Filter with 25% light transmission from Opticstar.

    ...
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    Model#: OSRMN25

    Available - Ships in 2-4 Days

    $14.25

  14. Opticstar 1.25" Light Pollution Filter

    Opticstar - 1.25" Light Pollution Filter

    This Opticstar Light Pollution Filter improve contrast for all types of telescopes; especially effective on the Moon and planets where they will show additional detail.

    ...
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    Model#: OSRLPF1

    Available - Ships in 2-4 Days

    $47.50

  15. Opticstar 2" Light Pollution Filter

    Opticstar - 2" Light Pollution Filter

    This Opticstar Light Pollution Filter improve contrast for all types of telescopes; especially effective on the Moon and planets where they will show additional detail.

    ...
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    Model#: OSRLPF2

    Available - Ships in 2-4 Days

    $76.00

  16. DGM Optics - 2" Narrow Pass Band (NPB) Nebula Filter

    DGM Optics - 2" Narrow Pass Band (NPB) Nebula Filter

    The NPB is the ONE filter to have if you have just one, and now regarded as the top narrowband  (UHC type) filter in the world. Judged by renown astro-equipment author Phil Harrington as the best of nine leading competitors in the Astronomy Magazine review "Secret Weapons" (August 2005).

    ...
    Learn More
    Model#: NPB-2

    In Stock

    $150.00

  17. DGM Optics - 1.25" Narrow Pass Band (NPB) Nebula Filter

    DGM Optics - 1.25" Narrow Pass Band (NPB) Nebula Filter

    The NPB is the ONE filter to have if you have just one, and now regarded as the top narrowband  (UHC type) filter in the world. Judged by renown astro-equipment author Phil Harrington as the best of nine leading competitors in the Astronomy Magazine review "Secret Weapons" (August 2005).

    ...
    Learn More
    Model#: NPB-1.25

    Available - Ships in 2-4 Days

    $75.00

  18. DGM Optics - 2" VHT Filter

    DGM Optics - 2" VHT Filter

    The VHT is "mid-band" Nebula/LPR filter that is the perfect match for smaller scopes, or binoculars that can use filters. This filter provides a good balance between the NPB and GCE with regards to contrast vs. field background and star brightness.

    ...
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    Model#: VHT-2

    Available - Ships in 2-4 Days

    $140.00

  19. DGM Optics - 1.25" VHT Filter

    DGM Optics - 1.25" VHT Filter

    The VHT is "mid-band" Nebula/LPR filter that is the perfect match for smaller scopes, or binoculars that can use filters. This filter provides a good balance between the NPB and GCE with regards to contrast vs. field background and star brightness.

    ...
    Learn More
    Model#: VHT-1.25

    Available - Ships in 2-4 Days

    $70.00

  20. DGM Optics - 2" CGE Filter

    DGM Optics - 2" CGE Filter

    The GCE takes a different approach to Wideband LPR filters by employing a "Notch" design which excludes all the bad stuff, from 540 - 590 nm, while allowing the rest of the visible spectrum to transmit over 90%.

    ...
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    Model#: CGE-2

    Available - Ships in 2-4 Days

    $160.00

Items 41 to 60 of 128 total

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