We will meet at the regular time tomorrow. A good many activities have been taking place in the past couple of weeks, on which I hope we'll receive updates. We must also begin serious planning for the December solar observing campaign and, for those of us going down to Chile, travel plans should be initiated soon.
TB: The results on these slides look very promising! Were these data obtained using one of the two MD settings? Or are examples of both presented? Impressive that you could do a full map of the Sun (2000" box dimension) in 500 s. I assume some of the smaller maps were much faster? Did you have a chance to exercise the filter wheel loads to calibrate T_ant? Anyway, I hope you can walk us through some of this tomorrow. I am sure a few of us will be happy to crunch some of the data (e.g., interpolate the various scan patterns onto a regular grid with corrections for varying sky opacity deduced by some devious means).
RH: We were not using the "MD" settings - that is still to be added for this type of observing. The "small" maps - 600" diameter with 5" nominal spacing - take about 200 seconds to cover the region. The observations were actually 400 seconds long so they should contain two passes over the map area. The data on the Hot and Ambient loads was taken but I have not used it in what I showed. In fact there was a blunder in taking these data in that I did not move the beam far enough off the Sun to observe the sky brightness, which is needed to derive the atmospheric transmission, so there will be large errors on any solar brightness temperatures I derive from them, quite apart from non-linearity issues.
HH: An item that had not come up at the telecon just now: there was a successful solar pointing of the NuSTAR hard X-ray observatory last night, under conditions described as an "intense engineering test." The team was hoping for solar-minimum conditions but found itself facing the aftermath of a colossal flare. In any case things seem to have worked, and this observatory might also make a contribution during the December time frame. See http://www.nustar.caltech.edu/page/sun for some of the motivation.
further ALMA MD mode tests 3.1 (Masumi Shimojo)
new tests of MD solar 1 were performed
scripts have been prepared to allow execution of MD solar 2 tests in the coming days
Solar observing campaign: December 9-16 (Tim Bastian)