Weather Report for November 27, 2014

Happy Thanksgiving!

The temperature tonight stayed a constant 49 deg F; 25 deg F warmer than just two nights ago. The sky over all of Arizona was flawless and the winds on Mt. Bigelow very light. In other words, this was a great night for observing and a lot was accomplished. The seeing started out at 1.2 arcsec, but quickly worsened to around 2-2.5 arcsec for the rest of the night. This was expected as the primary mirror must be much colder than the rapidly warming atmosphere.