Thread: A Reflection.....
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Old 20-10-2018, 04:17 PM
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cometcatcher (Kevin)
<--- Comet Hale-Bopp

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Join Date: Jan 2005
Location: Cloudy Mackay
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Narrow band imaging uses very sharp bandpass filters to isolate various nebula emissions like Ha, SII and OIII. They are similar to nebula filters but isolate one passband at a time.
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