Comparison - Here we compare the photometry of the SDSS
catalog with CFHT calibrated DAOPHOT photometry (25px radius ap). We plot
the chip-to-chip offsets relative to the SDSS catalog for each set of
observations. The processing date and the flat image used is indicated
along with the image number and corresponding plot symbol. The x-axis is
the chip number running from 0 to 35, and the y-axis is the offset in
magnitudes (including the color transformation term). Note the large offset
between chip 8 and 9 (0.05 mag) for even the recently processed data.
g' Plots
| D2 Proc=040611 |  |
| D2 Proc=040721 |  |
| D3 Proc=031116 (a) |  |
| D3 Proc=031116 (b) |  |