XLSSC 122 JWST Observations

Observations of XLSSC 122 were carried out with JWST on 10 August 2024 (Program ID: 3950; PI: K. Finner). JWST NIRCam can simultaneously image with a short- and long-wavelength filter, with this observation pairing F090W & F277W and F200W & F356W. We performed a MEDIUM8 readout pattern with 9 groups and 1 integration for a total exposure time of 7559 s for the F090W & F277W pair. The pairing of F200W & F356W was obtained in the SHALLOW8 readout pattern with 10 groups and 1 integration for a total exposure time of 4209 s. The cluster BCG was placed slightly off-center from the middle of Module A so that the diffuse light surrounding it would not be severely impacted by the detector gaps. We reduced the observations with the JWST data reduction pipeline and corrected systematic effects in the images with the YOUNG (Yonsei Observable UNiverse Group) JWST calibration pipeline (https://github.com/zpscofield/young-jwstpipe). The individual observations were then stacked into mosaic images for each filter using the square kernel with a pixfrac of 0.75 and a final pixel scale of 0.02''. The mosaic images and their corresonding weight files are provided here.