Those are impressively good pictures. I was doing 30 second exposures back in January, but on a ship's deck, and I suspect there's more gross movement on the ship, if less vibration and the like.
(What you didn't have was the ability to look straight up and see green curtains all around you. That is literally awesome.)
(no subject)
(What you didn't have was the ability to look straight up and see green curtains all around you. That is literally awesome.)