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Spectral efficiency of the quad-band filter set. (top) Power spectrum... | Download Scientific Diagram
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Tri-band and other narrow band imaging of emission nebulae with a colour camera – Professor Morison's Astronomy Digest
M27 Nebula, a first light color image, exp. 300sec frame, org. rev. image. Filter: 2" Triad Ultra Quad-Band Narrowband Filter ( Niels V. Christensen ) - AstroBin
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