MASTSEL

This library was developed with 2 goals: support the Asterism Selection for MAVIS instrument (https://mavis-ao.org/) and managing the computation of the jitter (i.e. tip/tilt) error in Adaptive Optics simulations done in the Fourier domain. It is used by TIPTOP (https://github.com/astro-tiptop/TIPTOP).

The main features are located in:

• mastsel/mavisLO.py class that computes the jitter ellipses that can be convolved with High Orders (HO, i.e. aberrations of higher spatial frequencies than tip/tilt) Point Spread Functions (PSF) to get the PSFs that consider both the effect of HO and Low Orders (LO, i.e. tip/tilt).

• mastsel/mavisPsf.py that contains a set of methods and classes to compute short and long exposure PSF from Power Spectral Densities (PSD), Strehl Ratios, radial profiles, encircled energies (and other quantities) from PSF, to convolve kernels with PSFs, …

Reference: section 5 “LOW ORDER PART OF THE PSF” of Benoit et al. "TIPTOP: a new tool to efficiently predict your favorite AO PSF" SPIE 2020 (ARXIV: https://doi.org/10.48550/arXiv.2101.06486).