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Old 25-07-2008, 07:34 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Thanks guys.

Yes I was surprised to see that nebulosity in the image.

This camera seems very responsive in the Ha band and all that without a Ha filter which is unusually high Ha response. Perhaps also the filters letting through more Ha than normal.

I think that is right that the actual butterfly cluster is closer to the neb than the bright cluster near the top.

Greg.
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