The recently developed "multistripe" capability for JWST near-infrared detectors exhibited unexpected behavior during the first use in flight. The cause of that behavior is now fully understood, and the fix is straightforward to implement. Multistripe observations are scheduled to resume before the start of Cycle 5. Multistripe subarrays can be used to record short-wavelength DHS spectra in NIRCam Grism Time Series observations and to observe very bright targets with NIRISS Single Object Slitless Spectroscopy (SOSS). Proposers should not hesitate to submit proposals that use multistripe capabilities.
 
Check the Call for Proposals Late Breaking News section for this and other information relevant to JWST users. Users with questions about multistripe subarrays are encouraged to contact the Help Desk.