Updated section on high-accuracy time synchronization with a discussion of the Garmin 18 GPS and the KIWI-OSD video labeler. The relatively inexpensive Garmin 18 plugs into your laptop and can synchronize your laptop to GPS time while at a remote site. http://www.utahastronomy.com/Observing_resources#High_accuracy_time_synchron... Updated handy tables for observing with a table of the number of effective observing hours per month for Salt Lake City. http://www.utahastronomy.com/Table_SLC_UT_Effective_Observing_Hours Effective observing hours equals potential dark sky hours or lunar observing hours times the percentage of average monthly time with clear skys per Utah climate records. See also handy tables generally at - http://www.utahastronomy.com/Observing_resources#Handy_Tables - Kurt _______________________________________________ Sent via CSolutions - http://www.csolutions.net