Hubble's ACS Is Back In Action

NASA Hubble Space Telescope Daily Report #4220, STSCI

“Flash Report: ACS HRC Biases and Darks look good – Everything looks nominal. The frames are clean. The CCD appears to have annealed well, and the C-amplifier readnoise is at the expected (historical) level. The bias levels in these first images are just a bit above the historical averages (a few % high), but this is expected for biases obtained soon after the HRC is configured for science operations. We expect the bias levels to drop to the nominal values within a few hours, and this return to the historical average should be evident in the next set obtained on Wednesday. Looks like we have another terrific ACS camera back on line and operating well.”