According to the rumors surfaced over the web Nikon working on a Astrophotography version of Nikon D810 DSLR, The sensor is optimized with increased hydrogen-alfa sensitivity, the Nikon D810a camera is expected to announce soon possibly in February 2015,
So finally Nikon entered in the field of Astrophotography, Canon already has XXDa series of Astrophotography DSLRs.. and the latest one is Canon 60Da available at Amazon and B&H.
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