Thanks John. It is working perfectly. A question : do you have any plan to include in the sky dome the possibility to show the constellation lines ?
Cheers Jacques Le lundi 3 août 2026 à 17:52:48 UTC+2, John Kline a écrit : > weewx-skyfield 1.18 is released. > > weewx-skyfield has always supported the full Hipparcos star catalog: drop > hip_main.dat into WeeWX's user directory and any of its 118,218 stars can > be addressed by catalog number ($almanac.hip_57939). But the Sky page's > dome only ever plotted the ~400 named stars, no matter what was installed — > and bright-but-unnamed stars, like gamma Cassiopeiae in the middle of > Cassiopeia's W, left holes in the constellations. > > That changes in 1.18, thanks to an issue filed by Jacques Terrettaz. When > the full catalog is installed, the dome now plots EVERY star down to a > magnitude limit — automatically, nothing to configure. Two new report > options set the cutoffs: star_mag_limit (how faint the dome plots, default > 2.6) and star_label_mag (how faint the named stars are labeled, default > 1.1). At star_mag_limit = 5.0 the dome draws roughly 800 stars, and the > whole field is compute in one vectorized Skyfield call, so the page still > renders in milliseconds. Without the full catalog, nothing changes: the > dome draws the named stars exactly as before. > > I liked Jacques's settings (star_mag_limit = 5.0, star_label_mag = 2.5) so > much that PaloAltoWeather.com's sky maps now use them. The release notes > below include a screenshot of that sky. > > The release notes: > > weewx-skyfield 1.18 > > The Sky page's dome becomes a full sky map: install the full Hipparcos > catalog and it plots *every* star down to a configurable magnitude > limit, not just the named stars — so the bright-but-unnamed stars, like > γ Cassiopeiae in the middle of Cassiopeia's W, no longer leave holes in > the constellations. The dome's magnitude cutoffs are now report > options, no more editing source. Drop-in upgrade from any 1.x — > install over it, no config changes; without a full catalog the dome > looks exactly as before. Thanks to Jacques Terrettaz for pointing out > the missing stars. > > What's new > > - > > A true sky map with the full catalog. With hip_main.dat in > WeeWX's user directory — the same install that already enables > $almanac.hip_<number> tags (see > Serving every Hipparcos star > > <https://chaunceygardiner.github.io/weewx-skyfield/installation.html#serving-every-hipparcos-star> > ) > — the dome plots every catalog star at least star_mag_limit > bright, automatically, nothing to configure. Labels stay on named > stars; an unnamed star's hover tooltip gives its Hipparcos number > ("HIP 4427"). The whole field is computed in one vectorized > Skyfield observe, so the page stays cheap: a few milliseconds per > render once the catalog scan is cached. Without a full catalog the > dome draws from the 412 named stars, as it always has. > > The solstice-night dome with the full catalog, star_mag_limit = 5.0 > and star_label_mag = 2.5 — 781 stars: > > [image: The sky dome with the full Hipparcos catalog, magnitude limit > 5.0] > > <https://raw.githubusercontent.com/chaunceygardiner/weewx-skyfield/main/screenshots/panel_dome_mag5.png> > - > > The dome's magnitude cutoffs are now options. star_mag_limit > (default 2.6 — stars at least this bright are plotted) and > star_label_mag (default 1.1 — named stars at least this bright > are labeled) were constants in wxskyfield_sky.py, editable only by > patching the source. Set them in the report section (magnitudes run > backwards: 6.5 is the naked-eye limit, Sirius is −1.4): > > [StdReport] > [[SkyfieldReport]] > star_mag_limit = 5.0 > star_label_mag = 1.1 > > At star_mag_limit = 5.0 with the full catalog the dome draws > roughly 800 stars. > - > > Misplaced options are called out. The [Skyfield] section of > weewx.conf has exactly two options, enable and stars; anything > else there — most plausibly a report option like star_mag_limit > landing next to stars = true — used to be silently ignored. The > service now logs a warning naming the unrecognized option and, for > the known report options, where they belong. > - > > Known Skyfield Issues update — the README section and > manual page > > <https://chaunceygardiner.github.io/weewx-skyfield/known-skyfield-issues.html> > now note that this extension's author has submitted > pull request #1140 > <https://github.com/skyfielders/python-skyfield/pull/1140> > upstream — the fix plus a regression test — for the rare, benign > RuntimeWarning from Skyfield's almanac.py line 339 > (skyfield #1114 > <https://github.com/skyfielders/python-skyfield/issues/1114>). > Reports already render complete; no user action is needed. > > > Requirements > > - Python 3.9 or later > - WeeWX 5.2 or later > - Skyfield (1.47 or later) and NumPy in WeeWX's Python environment > (see the > README); PyEphem is NOT required > > > Installing/upgrading > > Download weewx-skyfield.zip from this release, then: > > weectl extension install weewx-skyfield.zip > > Restart WeeWX. No weewx.conf changes are needed when upgrading from > 1.x. Note that upgrading replaces the bundled skin (skins/Skyfield/, > including its lang/ files) — if you have edited an installed lang file, > save a copy or send the corrections upstream first; local additions such > as extra star names survive upgrades best as [[[Almanac]]] entries in > weewx.conf (see the manual). > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/aa42cf75-c7a7-4e13-9a06-913ecfacce42n%40googlegroups.com.
