Performance

These pages are intended to keep the community informed about the performance of the ACS instruments. In particular, the pages below provide users with information concerning the following:

• Annealing history of the ACS/WFC detector after Servicing Mission 4 (SM4).
• A list of anomalies and artifacts users might encounter when analyzing data from any of the three channels on ACS (HRC, SBC, or WFC). 
• General information about the declining charge-transfer efficiency (CTE) of the ACS/WFC CCD's.
• A summary of the photometric CTE correction and its performance.
• A summary of the pixel-based CTE correction and its performance.
• A summary of the ACS slit-less spectroscopy (grism and prism) modes and their overall performance.