Realtime reduction of SuperWASP data: atmospheric transparency and
stability monitor
Each SuperWASP detector has such a large field of view that the clouds
have significant spatial structure. Here we show the results of a prototype
real-time reduction of DAS1 image data based upon the Cambridge
pipeline which is used to determine the atmospheric transparency. In this
system the zero-point in the absence of cloud is about 18.6,
increased absorption will lower this. During the calibration period some
fields may be slightly offset in zp (up to 0.02 mags). During
calima events (dust) it is likely that there will be significant scatter (which to some extent could be field
dependant) indicative of actual structure in the dust distribution.
The (approximate) transparency given by the
zero-point is 18.270
with a stability 0.199
mags.
