Thread: determining what NB filter i have
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Old 18-04-2016, 09:56 PM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline 		 
Join Date: May 2006
Location: Canberra
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Totally agree with the two suggestions, Eta carina will be a dead give away, looks dense and bold in Ha but far more tenuous and patchy in SII - easy! :-)

Take a 5min sub, it should be obvious to us all from that

Mike
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