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Filter Wheel Filters

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  1. Optec - Premium UV blocking filter with 435nm cutoff, mounted in 48mm threaded cell.

    Optec - Premium UV blocking filter with 435nm cutoff, mounted in 48mm threaded cell.

    Premium UV/Violet Block - Optec acquired a limited number of Schott glass filters made from GG-435 glass. Similar to #17431 but of higher optical quality ... Learn More
    Model#: 17432
    $45.00

  2. Optec - ND 0.6 (25% T), Neutral Density 25% transmission, 2.0±0.4mm thick.
  3. Optec - #80A Medium Blue, 50mm diam x 2mm thick

    Optec - #80A Medium Blue, 50mm diam x 2mm thick

    Low transmission in the blue and very transparent in ... Learn More
    Model#: 17239
    $30.00

  4. Optec - #58 Light Green, 50mm diam x 2mm thick

    Optec - #58 Light Green, 50mm diam x 2mm thick

    an inexpensive way to get the sharpest image from most telescope systems. ... Learn More
    Model#: 17238
    $30.00

  5. Optec - #29 Deep Red, 50mm diam x 2mm thick

    Optec - #29 Deep Red, 50mm diam x 2mm thick

    Passes light longer that 610 nm. This filter is ... Learn More
    Model#: o17237
    $30.00

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. Optec - Dichroic Luminance filter w/IR-Blocking for LRGB Imaging, Multilayer AR, 2.0 +/- 0.1mm thick

    Optec - Dichroic Luminance filter w/IR-Blocking for LRGB Imaging, Multilayer AR, 2.0 +/- 0.1mm thick

    Optec Luminance Filter w/ IR Blocking - 50mm Unmounted ... Learn More
    Model#: 17241
    $125.00

  12. Optec - Dichroic RED-IR filter for RGB Imaging, Multilayer AR coating, 2.0 +/- 0.1mm thick.

    Optec - Dichroic RED-IR filter for RGB Imaging, Multilayer AR coating, 2.0 +/- 0.1mm thick.

    Optec - Dichroic RED-IR filter for RGB Imaging ... Learn More
    Model#: 17246
    $135.00

  13. Optec - #8 Pale Yellow, mounted in 48mm threaded cell.

    Optec - #8 Pale Yellow, mounted in 48mm threaded cell.

    #8 Pale Yellow - Does a better job blocking the violet and UV at the expense of some blue. Recommended for monchromatic use when the most energy flux is to be passed ... Learn More
    Model#: 17431
    $45.00

  14. 17430

    Optec - Violet light rejection filter, mounted in 48mm threaded cell.

    Violet Light Rejection - Blocks the UV and violet light shorter than 420nm. Most refractor optics including apochromatic telescopes are not well corrected in the short wavelengths ... Learn More
    Model#: 17430
    $45.00

  15. Optec - Optec Deep Sky filter, mounted in 50mm bushing (46mm clear aperture), 4.0 +/- 0.1mm thick.
  16. Optec - Optec Deep Sky Filter, mounted in 48mm threaded cell.

    Optec - Optec Deep Sky Filter, mounted in 48mm threaded cell.

    Deep Sky - Blocks the UV, violet and sodium light completely. The filter passes the important nebulae emission features with +90% transmission ... Learn More
    Model#: 17266
    $75.00

  17. Optec - H-Alpha filter, 656.3 nm CW, 8±1.5 nm BW, Transmission > 85%, 2.0±0.1 mm thick.
  18. Optec - Precision Clear filter for use with Bessell set, Multilayer A/R coated, 5.0±0.1mm thick.

    Optec - Precision Clear filter for use with Bessell set, Multilayer A/R coated, 5.0±0.1mm thick.

    Optec - Precision Clear filter for use with Bessell set ... Learn More
    Model#: 17251
    $95.00

  19. Optec - Bessell specification U filter for photometry, Multilayer A/R coated, 5mm thick.

    Optec - Bessell specification U filter for photometry, Multilayer A/R coated, 5mm thick.

    Optec - Bessell specification U filter ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 17250
    $325.00

  20. Optec - Dichroic BLUE-IR filter for RGB Imaging, Multilayer AR coating, 2.0 +/- 0.1mm thick.

    Optec - Dichroic BLUE-IR filter for RGB Imaging, Multilayer AR coating, 2.0 +/- 0.1mm thick.

    Optec - Dichroic BLUE-IR filter for RGB Imaging ... Learn More
    Model#: 17248
    $135.00

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