  Taking advantage of the absence of solar activity in the recent 2008-9 epoch
(no spots, few faculae), we have made equatorial and meridian disk scans in
continua from 3129 {\AA} to 46700 {\AA}. Averaging 20 scans at each wavelength
to suppress granulation, which takes a total of 35 minutes, we achieve a system
noise level of 0.01%. We believe this noise level is a record low, not because
of instrument improvements, but simply because of observing procedures and the
cooperation of the Sun and sky. The observed solar fluctuations significantly
exceed the noise and range from 0.3% at 3130 {\AA}, 0.05% at 34000 {\AA}, to
0.06% at 46700 {\AA} near disk center. These fluctuations (corresponding to
about 3 K) presumably arise from the incomplete averaging of granulation.
Standard solar models for limb darkening fit the data for true continuum
regions reasonably well. No significant differences are seen between scan
directions (EW, N-S). Perhaps our results can serve as a template for exoplanet
detection by the transit of quiet G2V-like stars.
