[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Photometry of Tom's "Sorted" data



I have used the methods of TN92 on the "Sorted"
data that Tom posted from July to November 2002.

The results can be seen at
http://www3.ns.sympatico.ca/andrew.bennett/tass/sorted/sorted.html
The processing automatically rejects "noisy" images
(presumably clouds etc) and variable stars to produce
a spatial fit for the whole data set (4th order)
and corrections to individual images (linear).
This reduces the photometric errors to 0.0081
magnitudes rms in V-band and to 0.0060 magnitudes 
rms in I-band.

Fitting is limited by the poor spatial coverage and
would be improved if data sets were planned with
overlaps in both RA and declination.

Andrew Bennett, Avondale Vineyard