September 3, 2021 updates Posted on September 3, 2021 by Doug Loss Astrophotonics: astronomy and modern optics https://link.springer.com/article/10.1007/s00159-021-00134-7 JexoSim 2.0: End-to-End JWST Simulator for Exoplanet Spectroscopy — Implementation and Case Studies https://arxiv.org/abs/2109.00561 Cold Stop and Lyot Stop Designs for a New Infrared Exoplanet Imager at Keck Observatory https://arxiv.org/abs/2109.00612 Rocky planet engulfment in the binary system HIP 71726-37 https://arxiv.org/abs/2109.00679