16862

WFC3-ISR 2021-13 constructed table-based CTE corrections for photometry and astrometry for backgrounds between 5e and 30e. The astrometric corrections in that ISR were somewhat ad hoc comma since the calibration observations were not optimized for astrometry (there were degeneracies at the bright-star end). In this two-orbit program comma we will (1) provide photometric corrections all the way up to 100e background comma and (2) we will provide explicit astrometric corrections for all background levels comma from 10e to 100e. We will use the data collected in this program to update the table-based correction. We will put together a quick ISR to present the analysis and construct the table.