HACKER SAFE certified sites prevent over 99.9% of hacker crime.

{"closeOnBackgroundClick":true,"bindings":{"bind0":{"fn":"function(){$.fnProxy(arguments,\'#headerOverlay\',,\'\');}","type":"quicklookselected","element":".ql-thumbnail .Quicklook .trigger"}},"effectOnShowSpeed":"1200","dragByBody":false,"dragByHandle":true,"effectOnHide":"fade","effectOnShow":"fade","cssSelector":"ql-thumbnail","effectOnHideSpeed":"1200","allowOffScreenOverlay":false,"effectOnShowOptions":"{}","effectOnHideOptions":"{}","widgetClass":"OverlayWidget","captureClicks":true,"onScreenPadding":10}

 55 of 68 
Orion Telescopes
Orion 1.25" Extra-Narrowband Tri-color CCD Filter Set
If purchased separately $399.97
You Save $49.98
Accepted Payment
Expected Ship Date: 05/14/2018

  • Shoot high-contrast color CCD images of emission nebulas from light polluted or moonlit skies with these specialized astrophotography filters
  • Filter Set includes three dichroic, 1.25" extra-narrowband astrophotography filters: H-alpha, O-III, and S-II, all with metal filter cells
  • These filters transmit specific wavelengths emitted by emission nebulas and block all other light -including light pollution - so you can capture astrophotos in less than ideal conditions
  • Each Orion Extra-Narrowband filter features 90% transmission at the specified critical wavelength and a narrow 7nm bandpass (FWHM) for great results
  • Ideal for use with monochrome Orion StarShoot and Parsec astrophotography cameras to acquire stunning tri-color vistas of the night sky

Learn more
Item #  24609

Imaging with extra-narrowband filters is the latest technique used by amateur astronomers for producing striking, high-contrast color CCD astrophotos of emission nebulas. And it works even in heavily light polluted or moonlit skies.

What you need is this three-filter set, which consists of Orion Hydrogen-alpha (#5587), Orion Oxygen-III (#5578), and Orion Sulfur-II (#5579) extra-narrowband imaging filters (1.25"). These specialized "line" filters transmit only the specific wavelengths of light important in emission nebulas, while blocking out all the rest. The filters are designed for use with the Orion StarShoot Deep Space CCD Monochrome Imager II (#52083) and Manual 5-Filter Wheel (#5520), or with similar cameras.

The H-alpha filter has a transmission of 90% at the hydrogen-alpha line of 656.3nm and a full width at half-maximum (FWHM) bandpass of 7nm. The O-III filter passes light at the 500.7nm wavelength (the Oxygen-III line) with very high 90% transmission and a bandpass of 7nm. And the S-II filter passes light at the 672.4nm wavelength (the Sulfur-II line in the deep red end of the visual spectrum) with 90% transmission and a bandpass also of 7nm.

Images taken with extra-narrowband filters typically look different from those acquired using standard "true color" (RGB) methods. Rather than rendering an image in its "natural" color, the extra-narrowband filters provide a visual representation of the elemental makeup of a nebula, highlighting with assigned colors the areas where the light derives predominantly from either S-II, O-III, or H-alpha ions. This is the approach used by astronomers for many of the nebula pictures taken with the Hubble Space Telescope. The extra-narrowband tri-color images, while beautiful, also reveal much about the chemical composition of the nebula and its various features.

These 1.25" Orion filters are made from high-grade glass and feature vacuum-deposited dichroic interference coatings and antireflection coatings. Each filter is held in an anodized aluminum cell that is threaded to fit a standard CCD camera 1.25"” nosepiece or the Orion Multiple Filter Wheel. All three Orion filters are parfocal with each other, so refocusing is not needed when switching between filters in the set.

So if you're ready to go beyond RGB imaging and capture your favorite nebulas in a revealing new light — no matter how light-polluted your skies — add Orion's Extra-Narrowband CCD Imaging Filter Set to your imaging repertoire! Includes a protective plastic case for each filter.


Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-477-1001.


Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
3 Filters

Orders received by 1pm Eastern Standard Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

{"closeOnBackgroundClick":true,"bindings":{"bind1":{"fn":"function(event, startIndex, itemCount, newItems) { QuickLookWidget.assignEvents(newItems); $(\".Quicklook > .trigger\", newItems).bind(\"quicklookselected\", function(event, source, x, y) {\'#_widget825952349072\', event, source, x, y); }); }","type":"itemsloaded","element":".PagedDataSetFilmstripLoader > .trigger"},"bind0":{"fn":"function(){$.fnProxy(arguments,\'#_widget825952349072\',,\'\');}","type":"quicklookselected","element":".Quicklook > .trigger"}},"effectOnShowSpeed":"","dragByBody":false,"dragByHandle":true,"effectOnHide":"fade","effectOnShow":"fade","cssSelector":"ql-category","effectOnHideSpeed":"1200","allowOffScreenOverlay":false,"effectOnShowOptions":"{}","effectOnHideOptions":"{}","widgetClass":"OverlayWidget","captureClicks":true,"onScreenPadding":10}