GONG Hα Instrument
GONG Hα Instrument
GONG Hα Instrument
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Camera Dark Noise Stability12 hour dark mean11.4411.43mean dark11.4211.4111.411.3911.380 10000 20000 30000 40000 50000secondsSeptember 22, 2009 <strong>GONG</strong> H-alpha Review 31