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

Welcome!

Filters

Items 1 to 20 of 290 total

per page
Page:
  1. 1

Set Descending Direction
  1. Farpoint - Romor 48mm UV Filter

    Farpoint - Romor 48mm UV Filter

    Romor 48mm threaded UV filter. Threads fit 2" eyepiece end forming a dust cap. ... Learn More
    Model#: FP502
    $6.80

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7.  Astronomik - Dark Filter - 1.25"

    Astronomik - Dark Filter - 1.25"

    Do you have a CCD camera without a mechanical shutter and would like to do dark frames without continually monitoring your equipment?

    ...
    Learn More
    Model#: DARK-1
    $39.95

  8. 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

  9. Astronomik - MC Clear Multicoated Filter - 1.25" Round Mounted

    Astronomik - MC Clear Multicoated Filter - 1.25" Round Mounted

    This Multicoated (MC) glass serves as dust protector or to keep your system parfocal with other Astronomik filters.

    ...
    Learn More
    Model#: C-1
    $44.95

  10. 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

  11. Celestron - UV/IR Cut-off Filter - 1.25"

    DISCONTINUED: Celestron - UV/IR Cut-off Filter - 1.25"

    This is a discontinued item, we suggest the Baader Planetarium UV/IR Cut Filter as a replacement.

    The ultimate UV and Infrared blocker, featuring hard Ionbeam coatings, and fine optically polished glass! The ideal filter for NexImage and CCD imaging.

    ...
    Learn More
    Model#: 94125
  12. Astronomik - IR Blocking Filter for CCD - 1.25" Round Mounted

    Astronomik - IR Blocking Filter for CCD - 1.25" Round Mounted

    The Astronomik 1.25" IR Blocking Filter is an infrared-blocking filter for digital photography.

    ...
    Learn More
    Model#: IR-1
    $49.95

  13. Astronomik - Planet IR Pro 742 Filter - 1.25" Round Mounted

    Astronomik - Planet IR Pro 742 Filter - 1.25" Round Mounted

    The Astronomik ProPlanet 742 is the ideal filters for the reception of the moon and planets, notably Mars, with telescopes from 6" (150mm) aperture.

    ...
    Learn More
    Model#: P742-1
    $49.95

  14. Astronomik - Dark Filter - 2"

    Astronomik - Dark Filter - 2"

    Do you have a CCD camera without a mechanical shutter and would like to do dark frames without continually monitoring your equipment?

    ...
    Learn More
    Model#: DARK-2
    $49.95

  15. 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.

    ...
    Learn More
    Model#: LF2115

    Regular Price: $62.95

    Special Price: $49.95

  16. Astronomik - Planet IR Pro 807 Filter - 1.25" Round Mounted

    Astronomik - Planet IR Pro 807 Filter - 1.25" Round Mounted

    The Astronomik ProPlanet 807 filter is a deal addition to the Astronomik  ProPlanet 742 for imaging the moon and planets, with telescopes larger  then 10" (250mm) when the seeing is poor.

    ...
    Learn More
    Model#: P807-1
    $49.95

  17. 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.

    ...
    Learn More
    Model#: OSRIFNEB1

    Regular Price: $60.00

    Special Price: $57.00

  18. Astronomik - Planet IR Pro 807 Filter - 31mm Round Unmounted

    Astronomik - Planet IR Pro 807 Filter - 31mm Round Unmounted

    The Astronomik ProPlanet 807 filter is a deal addition to the Astronomik ProPlanet 742 for imaging the moon and planets, with telescopes larger then 10" (250mm) when the seeing is poor.

    ...
    Learn More
    Model#: P807-31
    $59.95

  19. Astronomik - Luminance (IR/UV Blocking) Filter - 1.25"

    Astronomik - Luminance (IR/UV Blocking) Filter - 1.25"

    The Astronomik UV and IR cut Filter is great for for digital photography!

    ...
    Learn More
    Model#: L-1
    $59.95

  20. Astronomik - Luminance Filter - 31mm Round Unmounted

    Astronomik - Luminance Filter - 31mm Round Unmounted

    The Astronomik UV and IR cut Filter is great for for digital photography!

    ...
    Learn More
    Model#: L-31
    $64.95

Items 1 to 20 of 290 total

per page
Page:
  1. 1

Set Descending Direction