From Nikon’s Facebook page:
“We have liftoff – The Nikon D5 launched on its first mission into space! Ten Nikon D5 cameras are aboard the OA-8 mission to resupply the International Space Station, and will be used to capture images from orbit high above Earth.”
Back in August Nikon confirmed that NASA ordered 53 unmodified Nikon D5 DSLR cameras.