Thread: New 225mm Solarunigraph and 408mm Newton
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Old 12-02-2021, 04:35 PM
hamishbarker
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hamishbarker is offline 		 
Join Date: Mar 2017
Location: Nelson, new zealand
Posts: 65
any details of the optical layout? is this a spectroheliograph or is the H alpha filtering by etalon or other filter system?
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