ExoSim 2 is the next generation of the Exoplanet Observation Simulator (ExoSim) tailored for spectro-photometric observations of transiting exoplanets from space, ground, and sub-orbital platforms.
![Focal planes produced by ExoSim 2 for the Ariel VISPhot channel using two different PSFs. The focal plane array size is 64 × 64 pixels, oversampled by a factor of 3. Both panels are presented in decibels ([dB]) units to highlight the PSF side lobes. The left panel shows the effective PSF using an Airy function, which is cropped to the 8th zero. The right panel presents the effective PSF using a PAOS-simulated PSF as input, including aberrations and a defocusing of 200 nm root mean square (RMS) on the wavefront. -- astro-ph.IM](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/01/ExoSim-2-The-New-Exoplanet.png?resize=1200%2C721&ssl=1)
ExoSim 2 is the next generation of the Exoplanet Observation Simulator (ExoSim) tailored for spectro-photometric observations of transiting exoplanets from space, ground, and sub-orbital platforms.