Astronomik CLS-CCD Nebula Filter - Clip Filter ...
Astronomik CLS-CCD Nebula Filter - Clip Filter for Sony Alpha Cameras 7 and 9
The Astronomik CLS-CCD Clip-Filter is directly inserted into the camera body, it reduces stray light and allows good astro images even from close to the city.
Connection: clip mount for Sony alpha 7, 7R, 7S, 7C and alpha 9 cameras Insertion and removal in seconds All camera functions remain unaffected Allows an extension of the exposure time by about 3 times The filter is very suitable for telephoto lenses and telescopes with the focal ratio from 1:2 to 1:15 The color balance is maintained as far as possible The infrared light is filtered away Due to the revised design, halos and reflections are a thing of the past Not sensitive to moisture, non-aging and scratch resistant
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Astronomik CLS-CCD Nebula Filter - Clip Filter for Sony Alpha Cameras 7 and 9
The Astronomik CLS-CCD Clip-Filter is directly inserted into the camera body, it reduces stray light and allows good astro images even from close to the city.
Connection: clip mount for Sony alpha 7, 7R, 7S, 7C and alpha 9 cameras Insertion and removal in seconds All camera functions remain unaffected Allows an extension of the exposure time by about 3 times The filter is very suitable for telephoto lenses and telescopes with the focal ratio from 1:2 to 1:15 The color balance is maintained as far as possible The infrared light is filtered away Due to the revised design, halos and reflections are a thing of the past Not sensitive to moisture, non-aging and scratch resistant
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Astronomik CLS-CCD Nebula Filter for Astrophotography
This filter is suitable for photographing nebulae, star clusters and also galaxies even from close to the city. The contrast of the deep-sky objects is enhanced, because the light of the artificial illumination is blocked as far as possible. This allows you to expose 3x longer before the sky background is brightened. The CLS CCD filter thus improves results whether you are working near cities or under dark skies far from settlements.
The CLS CCD filter is ideally suited for photographic use on telescopes of all apertures with focal ratios from f/15 to f/2.
How the CLS-CCD filter works:
The filter completely blocks the emission lines of low and high pressure lamps (mercury (Hg) and sodium (Na)) and the lines of airglow. This improves contrast everywhere, even under dark alpine skies.
All important emission lines of astronomical objects are transmitted. The filter also blocks infrared light (IR light). An additional IR blocking filter is therefore not necessary.
The Astronomik Broadband Clip-Filter for Sony alpha 7 and alpha 9 cameras
The clip filter is optimized for use with normal camera lenses and for telescope use.
The filters sit securely and tension-free in the camera. Assembly and disassembly are easy with your finger, without tools! No changes to the camera are required to use the filters!
The challenge:
Do you own a Sony alpha digital camera for astro-imaging? Then you have surely encountered the following problems: Large filters for large camera lens objectives are very expensive. If you place a filter holder between your camera body and lens, you loose the ability to focus to infinity. For very fast (low f/ number) telescopes like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or a filter wheel cannot be used since the distance to the corrector lenses would be changed. With long exposure times, your camera’s sensor chip is exposed to more dust.
With the Astronomik Clip-Filter System you can take care of all of these problems at once!
The patented Astronomik Clip-Filters are made of black anodized aluminum and laser-cut on state-of-the-art machines. They can be inserted within seconds directly into the camera body. There are no changes necessary and all lens functions (focus, screen, image stabilization) remain operational!
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.
Compatibility:
The Clip-Filter are sucessfully tested with the bodies Sony Alpha 7, 7R, 7S, 7C (in Mk I, Mk II and Mk III versions, 7R also Mk IV) and Alpha 9.
The manufacturer has made a short video which shows installation and removal of the clip-filter for Sony Alpha:
The filters are not suitable for Sony alpha 3000 to 6500 or Sony alpha NEX cameras.
Connection:
Clip filter for Sony Alpha cameras 7, 7R, 7S, 7C And 9
Thickness of the filter glass:
1 mm
Material of the filter cell:
Aluminum
Transmission at 486 nm (H-beta):
95%
Transmission at 496 nm ([O III]):
95%
transmission at 501 nm ([O III]):
95%
Transmission at 656 nm (H-alpha):
97%
1st transmission range:
450 nm to 520 nm
2nd transmission range:
640 nm to 690 nm
Substrate:
Fine optical polished substrate material
Parfocal:
with all other Astronomik filters, except the Astronomik XT filters
Anti-reflective coating:
Not sensitive to moisture, not aging, scratch resistant
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