Moderator Hard Challenge: Any target in H-alpha 
4 images in this album.
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Result of 7 voters
(1) NGC 6888 - The Crescent Nebula in H-alpha - 3 voters (3) BAR
(2) the crescent bubble ngc 6888 and PNG75.5+1.7 in Cygnus. - 3 voters (3) BAR
(3) NGC7000 - 1 voter (1) BAR
NGC1499 captured on January 14, 2010 with a Megrez 72mm APO + WO 0,8 FF/FR + Canan10D with 7nm Baader H-alpha filter. Image is a stack of 4 subframes (15 min. exposure each). Processing done in PixInsightLE.
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NGC1499 captured on January 14, 2010 with a Megrez 72mm APO + WO 0,8 FF/FR + Canan10D with 7nm Baader H-alpha filter. Image is a stack of 4 subframes (15 min. exposure each). Processing done in PixInsightLE.(Rob Kantelberg)

the crescent bubble ngc 6888 and PNG75.5+1.7 in Cygnus.
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the crescent bubble ngc 6888 and PNG75.5+1.7 in Cygnus.(chuck kimball)

NGC 6888 - The Crescent Nebula in H-alpha
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NGC 6888 - The Crescent Nebula in H-alpha(Craig Temple)

NGC7000
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NGC7000(Jon Sigurdsson)

Gallery: Digital Astro Challenge Photos navigate up Album: Digital Astro's 2010 Challenge Archive navigate up Album: August 2010 Challenges navigate up
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