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The Jellyfish Nebula (IC443) is a fairly large nebula and bright in the H-alpha and SII bands, but weak in OIII. Captured over 3 nights at Wa-chur-ed Observatory (SW Washington).

9 x 30 min. H-a, 6 x 30 min. each, SII and OIII
AT111EDT at f/5.6
QSI583wsg with Astrodon 3nm filters
AP Mach1 mount

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Comment by Greg Marshall on March 19, 2015 at 7:34pm

Thanks, Phillip.

Comment by Philip A Cruden on March 19, 2015 at 6:53pm

WOW! really nice Greg.

Comment by Greg Marshall on March 14, 2015 at 8:26pm

Thanks, Dave. It worked out better than I expected. But I notice that this object, like the Crescent Nebula, might easily be mistaken for an image of a brain! Some relatives described the Crescent as looking like "a diseased potato".

Comment by Dave Lane on March 14, 2015 at 8:18pm

Great shot I really love this!

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