Optolong 31mm Unmounted Filter Set with LRGB, H-Alpha, SII, and OIII Filters - LRGB-HASIIOIII-31U

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Item #OLNG-LRGB-HASIIOIII-31U

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This Optolong 31mm Unmounted Filter Set includes:

  • Optolong 31mm Unmounted LRGB Filter Set
  • Optolong 31mm Unmounted 7nm H-Alpha Filter
  • Optolong 31mm Unmounted 6.5nm SII Filter
  • Optolong 31mm Unmounted 6.5nm OIII Filter
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  • Description

    Optolong 31mm Unmounted Filter Set with LRGB, H-Alpha, SII, and OIII Filters

    Optolong's seven-piece 31mm unmounted filter set features their LRGB filters, 7nm Hydrogen-Alpha filter, 6.5nm Sulfur-II filter, and 6.5nm Oxygen-III filter. All filters have a 31mm aperture and come unmounted.

    Each filter in the Optolong 31mm Unmounted Filter Set is made with Schott glass that has been multi-coated with an ion-assisted deposition technology to ensure scratch resistance and stability on the central wavelength or CWL. This filter set is designed to be used in color filter wheels that accept 31mm unmounted filters. It doesn't matter which way you drop them into the filter wheel. The filters are unmarked and either side can face up or down.

    Optolong LRGB Filter Set - The Optolong LRGB Filter Set comes with four 31mm unmounted filters, including Red, Green, Blue, and Luminance. They are designed for de-bayered monochrome CCD and CMOS cameras and work great for both planetary and deep-sky imaging. Like all Optolong filters that are designated as “CCD”, this filter set blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.

    Optolong 7nm H-Alpha Filter - The Optolong H-Alpha 7nm is an extremely narrow emission-line filter that works by allowing a 7nm bandwidth of light, centered on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths. Wavelengths that are responsible for natural light pollution, or skyglow, are drastically reduced, as is artificial light pollution caused by high and low-pressure sodium vapor and mercury vapor lights. The result is a high contrast image that reveals the H-alpha line in all its glory.

    Optolong 6.5nm SII Filter - The Optolong Sulfur-II 6.5nm Extra-Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). Like all Optolong filters that are designated as “CCD”, this SII filter also blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.

    Optolong 6.5nm OIII Filter - The Optolong Oxygen III 6.5nm Extra-Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 500nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). Like all Optolong filters that are designated as “CCD”, this OIII also blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.

     

    Supplier SKU

    LRGB-HASIIOIII-31U

    What's Included

    • Optolong 31mm Unmounted Luminance Filter

    • Optolong 31mm Unmounted Red Filter

    • Optolong 31mm Unmounted Green Filter

    • Optolong 31mm Unmounted Blue Filter

    • Optolong 31mm Unmounted 7nm H-Alpha Filter

    • Optolong 31mm Unmounted 6.5nm SII Filter

    • Optolong 31mm Unmounted 6.5nm OIII Filter

    • Filter Case

  • Dimensions & Specifications

    • Filter - Single or Set: Filter Set

    • Filter Size: 31 mm

    • Filter Type: Broadband Deep-Sky

    • Filter Shape: Round

    • Mounted or Unmounted: Unmounted

    • Filter Set Contents: 31mm Unmounted Luminance / Red / Green / Blue / 7nm H-Alpha / 6.5 nm SII / 6.5nm OIII Filters

    • Filter Warranty: Two Years


  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    Two Years

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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