Astronomy Technology Today has published a review of our Astronomik Typ 2x L-RGB filters and the 12nm emission line filters OIII-CCD, H-alpha-CCD and SII-CCD.
You may read the article here as a PDF (2MB)
Astronomik is a Joint Venture of:
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The new Clip-Filter for Sony Alpha 7, 7r and 7s are finaly ready!