In Cycle 6, NIRCam is offering the new ‘superstripe’ readout capability that significantly improves brightness limits for imaging and time series observations. Superstripe allows the FULL frame and SUB64P subarrays to be read in smaller subframes. Each subframe has a short exposure time, allowing for imaging of much brighter targets. The subframes are combined into a larger image by the JWST calibration pipeline. In superstripe mode, NIRCam can reach about 5.8 magnitudes brighter in the full frame, and 2.6 magnitudes brighter in the 64x64 pixel subarrays. In addition, with superstripe a given target can be imaged in wider-bandpass filters than has previously been possible. In the Astronomer's Proposal Tool, the superstripe option can be selected by choosing one of the ‘SUPSTP’ subarrays in the imaging and time series templates. Figure 1 illustrates how the superstripe capability can be used to observe Jupiter with full frame images.

On August 20^th, JWebbinar 52 - Developments in Instrument Modes and Capabilities for JWST Cycle 6 will cover the details of this new capability. Observers are encouraged to attend the JWebbinar and to reach out to the NIRCam team through the JWST Help Desk with any question.