Specsim is a Python package for simulating spectroscopic observations with TMT-MODHIS and Keck-HISPEC, which are both high-resolution (R~100,000) diffraction-limited spectrographs each covering y, J, H, and K bands simultaneously. The simulators compute the total number of photons arriving at the detector per second and the noise level as well as the associated photon-limited radial velocity precision per order and cross-correlation function signal-to-noise ratio (SNR). A web platform for Specsim is in development to serve the broader community. The platform aims to provide users of TMT-MODHIS and Keck-HISPEC an exposure time calculator and simulated spectra for planning observations with the instruments across varied observing scenarios and science cases.
|