Astronomik CLS-CCD clip-on nebular filter for Sony Alpha 7 and 9 cameras
This filter is suitable for photographing nebulae, star clusters and also galaxies even from close to the city. The contrast of deep sky objects is improved, because the light from artificial illumination is blocked as much as possible. This allows 3 times more exposure before the sky background lightens. The CLS CCD filter thus improves results whether working close to cities or under dark skies away from settlements.
The CLS CCD filter is ideal 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 glare lines of air. 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). Therefore, an additional IR blocking filter is not necessary.
Astronomik broadband clip-on filter for Sony alpha 7 and alpha 9 cameras
The clip-on filter is optimized for use with normal camera lenses and for telescope use.
The filters sit securely and tension-free on the camera. Mounting and dismounting is easily done with your finger, no tools required. There is no need to modify the camera to use the filters.
The challenge:
do you have a Sony alpha digital camera for astroimaging? Then you have surely encountered the following problems:
♦ Large filters for large camera lenses are very expensive.
♦ If you place a filter holder between the camera body and the lens, you lose the ability to focus to infinity.
♦ For very fast (low f-number) telescopes such as the Vixen R200SS or the Takahashi Epsilon astrograph, you cannot use a filter drawer or filter wheel, as you would change the distance to the corrector lenses.
♦ With long exposure times, the sensor chip in your camera is exposed to more dust.
with the Astronomik Clip-Filter System you can solve all 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 in seconds directly into the camera body. No changes are necessary and all lens functions (focus, display, image stabilization) remain operational.
The Clip-Filter system also acts as an excellent dust shield, preventing the possibility of dust settling on the sensor during prolonged exposure.
Compatibility:
The Clip-Filter has been successfully tested with Sony Alpha 7, 7R, 7S, 7C (in Mk I, Mk II and Mk III versions, 7R also Mk IV) and Alpha 9 bodies.
The Astronomik CLS-CCD Clip-Filter is inserted directly into the camera body, reduces stray light and enables 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 are not affected
♦ Allows to extend the exposure time about 3 times
♦ The filter is very suitable for telephoto lenses and telescopes with the focal ratio from 1:2 to 1:15
♦ Color balance is maintained as far as possible
infrared light is filtered out
♦ Thanks to the revised design, halos and reflections are a thing of the past
♦ Non-moisture sensitive, non-ageing and scratch-resistant
Technical Specifications:
- Connection: clip-on filter for Sony Alpha 7, 7R, 7S, 7C and 9 cameras
- Filter glass thickness 1 mm
- Filter cell material Aluminum
- Transmission at 486 nm (H-beta) 95%
- Transmission at 496 nm ([O III]): 95% Transmission at 496 nm ( ): 95%
- Transmisión a 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: Optically fine polished substrate material
- Parfocal: with all other Astronomik filters except Astronomik XT filters
- Anti-reflective coating: Non-moisture sensitive, non-aging, scratch resistant
Astronomik CLS-CCD clip-on nebular filter for Sony Alpha 7 and 9 cameras
