The ACS solar blind channel (SBC) is a photon-counting MAMA detector
capable of producing two-dimensional imaging in the UV at wavelengths
1150-1700 Angstroms, with a field of view (FOV) of 31" x 35".
We describe the on-orbit performance of the ACS/SBC from an analysis
of data obtained from the service mission observatory verification
(SMOV) programs. Our summary includes assessment of the point-source
image quality and point spread function (PSF) over the SBC FOV, the
dark current measurements, the characteristics of the flat fields,
fold analysis, throughput, and the UV sensitivity monitor to check
for contamination. Where appropriate, a comparison with pre-launch
calibration data will also be made.
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