Weather Report for September 25, 2009

Another photometric night at the MMT and a big improvement in the seeing over that experienced during the previous two nights. There were some very short periods of >1.5 arcsec seeing, but mostly the seeing was sub-arcsec with extended periods at around 0.5". This night finally ends the first Cycle 2 observing run for the Fermi monitoring project. Thanks go again to G. Williams and F. Vilas for extending the optical monitoring of 3C 454.3 and a few other sources by 3 nights and for the use of the impressive facilities of the MMTO.