I'm still at Kitt Peak, on the 5th night of a 6 night run at the Mayall 4-m Telescope. Observing sometimes make me think of life in a nuclear shelter, post-apocalypse. No windows, no daylight, being very tired and drinking lots of coffee, which is not good given the nearest toilet is two floors down, down a very nuclear-shelter-like steel stairway. When the mighty dome moves, it's like another nuclear strike. In the control room, it's a little dark, with music thumping, and science being done.
Of course, we still have a 4-m telescope and a wide-field camera (with a 36'x36' field of view) to play with, and while we can't do science, we can still get some pretty images. Yesterday, we decided to go after the Crab Nebula, with exposures of no more than a few seconds. We got three bands (B, V & R), which let's you make a false colour image of the Crab, and this is what I got.