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  1. Baader Planetarium - UHC-S / L-Booster-Filter 2"

    Baader Planetarium - UHC-S / L-Booster-Filter 2"

    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.

    ...
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    Model#: FUHC-2
    $147.00

  2. Baader Planetarium - U-Filter (Venus and Ultraviolet) - 2"

    Baader Planetarium - U-Filter (Venus and Ultraviolet) - 2"

    Another unique and pioneering filter from Baader Planetarium. For the first time, amateurs can now record cloud structures on Venus. The Baader Venus Filter enables amateurs to successfully image in the deep UV, a spectral region normally inaccessible

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    (48 States)
    Model#: FUV-2
    $387.00

  3. Baader Planetarium - 1.25" Solar Continuum Filter (540nm)

    Baader Planetarium - 1.25" Solar Continuum Filter (540nm)

    Baader Planetarium Solar Continuum Filter (540nm) 1.25"The new Baader Solar Continuum filter is designed to enhance the visibility of solar granulation and sunspot details

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    Model#: FSOL-1
    $99.00

  4. Baader Planetarium - 2" Solar Continuum Filter (540nm)

    Baader Planetarium - 2" Solar Continuum Filter (540nm)

    Baader Planetarium Solar Continuum Filter (540nm) 2"The new Baader Solar Continuum filter is designed to enhance the visibility of solar granulation and sunspot details

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    Model#: FSOL-2
    $186.00

  5. Baader Planetarium - UV / IR Cut / L-Filter 50x50mm (3mm glass thickness) Square

    Baader Planetarium - UV / IR Cut / L-Filter 50x50mm (3mm glass thickness) Square

    Baader Planetarium has introduced the world's finest UV/IR cut filter. This filter is a must for all digital imaging with Digital Cameras, CCD Cameras, and modified WebCams ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FUVIR-SQ50
    $219.00

  6. Baader Planetarium - UV / IR Cut / L-Filter 50.4mm (3mm glass thickness) Round

    Baader Planetarium - UV / IR Cut / L-Filter 50.4mm (3mm glass thickness) Round

    Baader Planetarium has introduced the world's finest UV/IR cut filter. This filter is a must for all digital imaging with Digital Cameras, CCD Cameras, and modified WebCams ... Learn More
    Model#: FUVIR-RD50
    $156.00

  7. FP473

    Opticstar - 1.25 " Nebula Deep Sky Filter

    This Opticstar 1.25" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.

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    Model#: OSRIFNEB1
    $57.00

  8. Lumicon - Night Sky H-Alpha Filter  1.25"

    Lumicon - Night Sky H-Alpha Filter 1.25"

    Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm.

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    Model#: LF3085
    $119.95

  9. Lumicon - Night Sky H-Alpha Filter  2"

    Lumicon - Night Sky H-Alpha Filter 2"

    Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 90% or above

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    Model#: LF3090
    $149.95

  10. Lumicon - Minus Violet Filter 58mm

    Lumicon - Minus Violet Filter 58mm

    Lumicon Minus Violet and Infrared Blocking Filters are used primarily to "bracket" the color-corrected band of refracting telescopes.

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    Model#: LF3130
    $134.95

  11. Lumicon - 2" Infrared Filter

    Lumicon - 2" Infrared Filter

    Lumicon Minus Violet and Infrared Blocking Filters are used primarily to "bracket" the color-corrected band of refracting telescopes.

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    Model#: LF3145
    $149.95

  12. Lumicon - 2"  H-Beta Filter

    Lumicon - 2" H-Beta Filter

    Also known as the Horsehead Nebula filter, the Lumicon 2" Hydrogen-Beta Filter isolates only the hydrogen-beta line of the spectrum (486nm) in a narrow pass-band just 9 nm wide, providing maximum contrast.

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    FREE SHIPPING
    (48 States)
    Model#: LF3060
    $299.95

  13. Lumicon - Cassegrain H- Beta Filter

    Lumicon - Cassegrain H- Beta Filter

    Also known as the Horsehead Nebula filter, the Lumicon Cassegrain Hydrogen-Beta Filter isolates only the hydrogen-beta line of the spectrum (486nm) in a narrow pass-band just 9 nm wide, providing maximum contrast ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: LF3065
    $324.95

  14. Lumicon - Filter Variable Polarizer 2"

    Lumicon - Filter Variable Polarizer 2"

    The LF2115, 2" Variable Polarizing Filter, is the all-phase lunar filter for large telescopes. Transmittance is continuously variable from about 5% to 35%. Fits 2" eyepieces.

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    Model#: LF2115
    $94.95

  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 - #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

  17. 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

  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 - #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

  20. 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

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