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Monday, November 10, 2008


My Sharpless Catalog project continue with Sh2-157.
Sh2-157 is a faint large nebula. Famous Bubble Nebula can be seen in upper left corner.This nebula looks like a gigant termite head to me.
Three versions precented here, first is in a Hubble palette,
second in "natural" colors and
third is an image with reduced stars to better show nebulosity, there seems to be lots offaint double ionized Sulfur (S-II) around.
Imaging data: Camera, QHY8 - Filters, Baader 7nm H-alpha, Baader 8,5nm O-III and Baader 8nm S-II - Optics, Tokina AT-X 300mm @ f2.8 - Exposures, 5X 1200s H-alpha, 2 X 1200 O-III and 2X1200s S-II + flats and bias - Guiding, LX200 GPS 12" + PHD-guiding and Lodestar

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