Astronomik 12nm H-Beta CCD Filter - Canon EOS XL Full Frame Clip
The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography. The filter lets the H-beta light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.
The full width at half-maximum (FWHM) of 12nm is optimized for the use with common CCD cameras and allows the use of very fast optics. It should be noted that the filter has a transmission of up to 99%. Another advantage of the 12nm filters is the better availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our H-alpha 6nm filter you often won’t find a usable guidestar. Together with the other three Astronomik emission-line filters you can do great color images even from very light polluted places! The filter has a built-in IR-blocker up to 1150nm. You don’t need an additional IR-blocker with this filter.
The Astronomik H-beta-CCD increases the contrast between objects, in this case between the H-beta emission line and the skyglow background. Our Astronomik H-beta-CCD completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow. The optimal aperture ratio for this filter is 1:3.5 to 1:6. The range of application extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play.
When using the Astronomik H-beta CCD filter together with the H-alpha CCD, OIII-CCD and the SII-CCD filters you can obtain three-color images of emission line objects (gas nebulae) from locations with very strong light pollution. To do so, you would take an image in three different wavelengths, select each one as a color-channel in Photoshop and paste them together as a color image. Using the Astronomik H-beta filter together with the H-alpha-CCD you can create charts of the ionization energy in nebulae by creating an image from the ratio of H-alpha vs. H-beta. If you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel.
The H-beta-CCD is also great for visual observation. If you plan to get filters for visual observation and for astrophotography get the CCD filter: You may use this filter visual as well as in front of you camera. The built-in IR-blocker doesn’t disturb visual observation but you need an additional IR-blocker if you want to use the visual filter with your camera.
About the Astronomik XL Clip-Filter System....
The patented Astronomik Clip-Filter System for Canon full-frame cameras is black anodized aluminum and laser-cut on state-of-the-art modern machines. It can be inserted within seconds directly into any full-frame (5D and 6D, for example) EOS camera body. There are no changes necessary and all lens functions (focus, screen, image stabilization) remain functional! If you have a EOS Rebel, or other Canon APS-C sized camera body, you should purchase the standard-sized Astronomik H-Beta CCD EOS Clip filter instead.
Almost all Canon system lenses (with the exception of the EF-S series) and all M42 and T2 lens adapters, can be used with the Astronomik Clip-Filter System. The Clip-Filter System also acts as an outstanding dust shield, which prevents the possibility of dust settling on the sensor during long time exposure (The MC-Clear filter does not have a filter effect and only acts as a dust shield.)
Astronomik 12nm H-Beta CCD Filter - Canon EOS Clip Features
- 98% transmission at 486nm (H-beta)
- Full width at half maximum 12nm
- Complete blocking from 350nm to 470nm and 500nm to 1100nm
- Parfocal with other Astronomik filters
- Glass thickness: 1mm
- Completely resistant against high humidity, scratches and aging effects
- Diffraction limited, the filter will not reduce the optical performance of your telescope!
- Astronomik filters are delivered in a high-quality, long lasting, filter box
Astronomik Product Number: HBCCD-EOS
- Additional Information
SKU AK-HBCCD-EOSXL Manufacturer Astronomik Type of Filter H-Beta Filter Usage Imaging Single or Set? Single Filter Filter Size EOS Full Format Filter Shape EOS XL Filter Mounted? Mounted Warranty 10 Year Warranty
- Included Items
- Astronomik 12nm H-Beta CCD Filter Clip for Full Frame Canon EOS Cameras
- Protective Plastic Case
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