I am the PI of a Cycle 30 Hubble Space Telescope program to investigate the multiplicity of stars and brown dwarfs in NGC 1333, a very young star-forming region. We will be characterize the companion population to cluster members between 0.01 – 1.0 solar masses, and down to ~ 7 au given the results of past analyses (see De Furio et al. 2019, 2022 for more). This program will be well integrated with the JWST NIRISS GTO program (ID: 1202) to identify planetary mass objects in NGC 1333 and characterize the very low mass end of the IMF.