1.1 New for Cycle 30

We have made the following updates to the WFC3 Instrument Handbook for this cycle:

  • We have provided improved system throughput plots for UVIS filters in Section 6.5.1 and in Appendix A (Section A.2).

  • We have provided improved system throughput plots for IR filters in Section 7.5.1 and in Appendix A (Section A.2).

  • We have created Section 6.8.2 to describe sensitivity measurements, the sensitivity ratio of the CCD chips, and the sensitivity change over time for the UVIS detector.

  • We have created Section 7.8.2 to describe sensitivity measurements made with the IR filters and grisms.

  • We have provided updated measurements and discussion of Charge Transfer Efficiency (CTE) on the UVIS CCD chips, with descriptions of methods to reduce and estimate signal loss and the limitations of the methods, in Section 6.9.
  • We have added a summary of the WFC3 calibration plan for the upcoming cycle in Appendix E (Section E.15)