WFC3 Instrument Handbook for Cycle 24 . ... 7.5.1 Filter and Grism Summary . 7.5.2 Filter Blue Leaks . ... This section gives details of the IR filters and grisms. Table 7.2 lists the IR channel?s filters, with a general description and fundamental parameters of each. Figures 7.2 and 7.3 show the effective throughput curves, including the filter transmission multiplied by the throughput of the OTA, WFC3 optics, and detector response. ... Table 7.2: WFC3 IR Channel Filters and Grisms. ...