Douglas Robertson/Eta Carina Nebula Ha Image

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Title: Eta Carina Nebula Ha Image   Location: Hahndorf, South Australia.  Date: April 2011
Astro 40D (Avg Temp around -18ºC)
Canon 400mm f5.6L lens @ f5.6 + Astronomik 12nm Ha EOS clip filter
iso1600, 405mins total exposure time (27x15min subs)