Astronomik SII 6nm Clip Filter for Canon EOS cameras with Full Frame Sensor

The Astronomik [S II] CCD Clip-Filter for Canon EOS full frame size cameras is a narrow band-pass filter mainly for star formation regions und can be inserted into the camera body within seconds.

Note: the optical viewfinder does not work with installed EOS XL Clip-Filter, as the flip-mirror is fixed in the upper position!

The Challenge:

Do you own a Canon EOS 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 EOS camera body. There are no changes necessary and all lens functions (focus, screen, image stabilization) remain operational!

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.)

Compatibility:

Canon EOS 5D and 6D with full-size sensor are compatible.

5D Mk I will work without LiveView only, the 6D MkII will not work with XL Clip-filters.

Please note that the XL-Clip filters will not work with the Canon 5DS, 5DSR, and the 5D Mk IV.

The filters are also not suitable for Canon EOS, EOS RP and EOS RP Astro!