Release Notes for v6.1.2

• Added ellipticity to toy PSF using toyg1 and toyg2 commands

Release Notes for v6.1.1

• Forgot new cfitsio file and Tess instrument files

Release Notes for v6.1

• Error in calculation for large angle scattering (JRP)

• Various updates to measure (AD)

• Various fixes for contamination (JRP)

• Extended high frequency turbulence scattering (JRP)

• Fixes for WCS for unusual telescope flip designs (AD)

• Fix for monochromatic SED optimization (JRP)

• Made example catalog for long exposure (JRP)

• Various bugs in uncoated surfaces (JRP)

• Larger buffer for tiny telescopes (JRP)

• Mie scatter loops check for infinite loop (JRP)

• Initial HST implementation (GS)

• Implemented time dependence of dust particle distributions (JRP)

• Fix for large pupil screen optimization (JRP)

• More resolution on internal background intensity grid (JRP)

• Various fixes for perturbation grid (JRP)

• Generalization of scattering arrays (JRP)

• Converted scripts to bash (JRP, EM, MK)

• Updated FFTW and removed fortran requirement (JRP)

• Updated cfitsio (JRP)

• Removed gotos in configure (EM)

• Various mistakes in pan-starrs files (EM, JRP)

• Generalized the monolayer for all surfaces (JRP)

• Implementation of optical properties of materials directory (JRP)

• Generalized medium files to include absorption (JRP)

• Extended wavelength grid for interfaces (JRP)

• Implementation of protected coatings (JRP)

• Implementation of thick (semi-infinite) coatings (JRP)

• Added shift approximation for multi-layers with limited information (JRP)

• Implemented non-uniform coating capabilities (JRP)

• Updated Rubin/LSST coatings for lenses and mirrors (JRP)

• Error in lateral field indexing and added blur for coarse grids (JRP)

• Fixed pan-starrs device thickness (EM, JRP)

• More careful contamination for overlapping dust (JRP)

• More careful background probability optimization near chip edges (JRP)

• Capability to adjust wavelength norm at other than 500 nm (JRP)

• Implementation of WFST (WL)

• Pan-starrs filter curves (EM)

• Optimization when IPC values are zero (JRP)

• Added giant catalog in examples (JRP)

• Calibrated dust on WIYN mirrors (AD)

• Added WIYN coatings on lenses, mirror, and sensor (JRP)

• Adjusted airglow levels based on WIYN measurements (AD)

• Adjusted airglow variability based on measurements (AD)

• Modified airglow SED files based on theoretical continuum (JRP)