Changelog

0.1.0 (2026-10-12)

First public release (PyPI). 0.1.0rc1 went to TestPyPI the same day.

wcc_etc>=0.1.0 is a declared dependency (it is on PyPI since 0.1.0), imported through its public KIND_NAMES and SENSORFILTER_FOCUS names, and wcc_sim.require_wcc_etc() turns a missing or too-old wcc_etc into a readable ImportError. CI installs wcc-etc from PyPI and a second job builds the wheel from the checkout, installs it into an empty venv and runs an offline simulation. Tagged v* pushes publish to TestPyPI, and final tags to PyPI, by trusted publishing.

simulate_field: Gaia DR3 cone search (cached on disk, astrometry propagated to the observation epoch, XHIP bright-star supplement), wcc-etc count rates per spectral template, oversampled PSF rendering with sub-pixel placement, the ETC noise model with full-well and ADC saturation, and a multi-extension FITS product (SCI, SATMASK, CAT, CLEAN) with a TAN WCS.
PSF modes: in-focus Airy at each star’s effective wavelength, +1/+2-wave Zemax Huygens defocus, optional Gaussian jitter, spectrum-weighted chromatic PSFs.
Analytic diffraction-wing extension beyond the PSF stamp, and the measured scattered-light halo (azimuthally averaged stray-light profile) as an additive term that reaches across the whole array.
Extended sources: analytic Sersic components with reddening.
Detectors: Sony IMX455 (zwo:*) and Hamamatsu HWK4123 qCMOS (qcmos:*, selectable gain mode); the per-frame saturation ceiling is recorded as SATLEVEL.
wcc-sim command line.

Differential aperture and PSF photometry on a series of frames: target and reference selection, per-frame centroiding, quality flags, relative light curve, one-page diagnostic report, live viewer.
wcc-phot command line.

.plot_* methods on SimulatedField (plot, plot_cutout, plot_psf_profile, plot_satmask, psf_report) and PhotometryResult (plot, plot_lightcurve, plot_field, plot_binned_rms, plot_raw_fluxes, plot_rms_vs_mag, plot_centroids, plot_background, report), each taking ax=None and returning the axes. The report panels behind them are public functions in wcc_sim.psfreport and wcc_phot.report; wcc_sim.plotting adds plot_image, plot_stamp, plot_radial_profile, plot_encircled_energy for plain arrays and ships the house style as plot_default.mplstyle (no user-installed style needed).
Tutorial 10_plotting.ipynb; the other notebooks use the methods.

TRAPPIST-1b transit recovery and M101 Cepheid period-luminosity scripts.
Monte Carlo cross-check of the wcc-etc signal and noise prediction against simulated frames (tests/test_etc_crosscheck.py).

qCMOS saturation ceiling (#17), Gaia synchronous-query truncation (#19), in-focus PSF wavelength (#20), synthetic BP-RP to template table with colour-interpolated rates (#21), input validation and edge cases (#22), catalog masks and spherical matching (#10), light-curve guards (#12), defocus PSF centring (#18, with wcc-etc), one delivered-frame contract (ADU - bias) * gain for objects and files (#11), recorded seed for unseeded runs and a stale-Gaia-cache warning (#24).

Docs site carries the Schmidt Observatory System logo and the stock Read the Docs theme (the Schmidt Sciences stylesheet was never loaded). New glossary page; the index opens in plain words; the concepts diagram names each stage in words with the module beside it; the quickstart uses field.plot(); the installation page lists the extras and no longer claims a wcc-etc 0.6.0 floor; the tutorials no longer name a personal conda kernel. Tutorial 01 is split into a short 01_getting_started and a 02_verification that holds the assertions; the other tutorials are renumbered 03 to 10.
The packaged scatter profile, its module docstring and the SCATFILE header card label the halo as the wcc-etc 450 nm scatter map instead of naming the ray-trace run. CITATION.cff removed.