As the Tarantula is basically Hydrogen.. my first guess would be the Hb and Ha. There's also another emission (mid frame) fainter but with similar Hb and Ha.
If I can find my Atlas I'll check out the position.
Update:
According to Urano Vol2, map A24
The faint Hb and Ha near centre appears to be coming from S dorado, a Var involved in NGC 1910 - can someone else check this out??
Last edited by Merlin66; 20-10-2009 at 09:01 PM.
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