The codebase for the catalog simulations are accessible through Bitbucketįor more details of PhoSim or if you have questions, they can be addressed using.Tutorials for running and using PhoSim are available here.Phosim installation instructions are available here.The full website for PhoSim is available here FITS images generated by these catalogs are here.Mirror, lens, filter, detector coating detailsĪn example of output catalogs from CatSim and the resulting simulated images are available.Surface perturbation & alignment errors of all optics & sensors.Site Properties: wind, turbulence intensity, outer scale.Instrument and site characteristics included in the Simulator Hot pixels/columns, dead pixels, lithography errors.Readout: read noise, dark current, gain, pre-over scans, bias, CTE.Interference reflection/transmission/absorption of coatings.Reflection/refraction/diffraction of mirrors, lenses, sensors.Atmospheric molecular opacity and scattering.

Dust absorption at source and in the Milky Way.Photon sampling from galaxy/asteroid/star SEDs & spatial distribution.Physical processes included in the Simulator This movie shows the photon Monte Carlo method used in the simulation. PhoSim generates images by collecting photons into pixels. It does this using modern numerical techniques applied to comprehensive physical models. The Photon Simulator (PhoSim) is a set of fast photon Monte Carlo codes used to calculate the physics of the atmosphere and a telescope and camera in order to simulate realistic astronomical images.

Free physics simulation images