Thread: Helix Nebula: First ever Ha luminance
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Old 09-09-2011, 12:22 PM
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sjastro
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Helix Nebula: First ever Ha luminance
Three hours Ha luminance added to old colour data.

3 hrs L=Ha, 1 hr R, 1 hr G, 1 hr B, ST-10XME, BRC-250 Scope.

http://users.westconnect.com.au/~sja...c7293newc.html

Clear skies

Steven
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