Another great night of observing. The seeing wasn't as good as during last night, often being worse than 2 arcsec and sometimes as bad as 3 arcsec. At its best, the seeing was 1.5 arcsec. The sky was wonderfully clear and a lot of work was done. Fortunately, the heavy cirrus stayed to the southeast of the observatory all night. These clouds are the cirrus outflow from a tropical system that is now hurricane "Paul" spinning off the southern tip of Baja. Hopefully, this system will not impact the weather in southern Arizona in the coming days.