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Sky Watchers Association of North Bengal - SWAN - : Demonstration on spectroscopy
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Sky Watchers Association of North Bengal - SWAN - : The cut out is ready.
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Sky Watchers Association of North Bengal - SWAN - : SWAN volunteer is helping a participant
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Sky Watchers Association of North Bengal - SWAN - : Demo on Spectroscope building
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Sky Watchers Association of North Bengal - SWAN - : The testing phase
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Sky Watchers Association of North Bengal - SWAN - : LIVE Sun viewing with H alpha Solar telescope
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Sky Watchers Association of North Bengal - SWAN - : Through H Alpha
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Sky Watchers Association of North Bengal - SWAN - : Trying their own handmade Spectroscope
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Sky Watchers Association of North Bengal - SWAN - : Demo on building Spectroscope