GONG Hα Instrument
GONG Hα Instrument
GONG Hα Instrument
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Camera Noise vs LightNoise vs Signal @ 40 ms3025•4 frame averagesSigma (ADU)2015105uncooledcooled #2•No differencebetween cooledand uncooled•Noise is asexpected fromphoton shot noisestatistics00 1000 2000 3000 4000Signal (ADU)September 22, 2009 <strong>GONG</strong> H-alpha Review 34