25-sec exposures. Nikon D700 (ISO 2500) & D3 (ISO 3200) + Nikkor 14-24mm f/2.8G lenses.
ALMA under construction, Llano de Chajnantor Observatory, Chile, night of 16/17 June 2010.
(c) 2010 Jose Francisco Salgado (josefrancisco.org)

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