Atmospheric Conditions
The local conditions that decide whether an observing night happens. CLOUD COVER is connected, from the Norwegian Meteorological Institute: fetched by the reader's own browser, only when they ask, so their coordinates go to the institute and never to AsteriaStar. Atmospheric seeing, sky transparency and Bortle sky brightness remain unconnected and are never fabricated.
Provider status
- Status
- connected
- Data shown
- none on this page — see /space-weather
- Licence
- NLOD 2.0 and CC BY 4.0 — attribution required, commercial use permitted.
- Fetched at
- —
- Stale
- no
This is Atmospheric Conditions's catalogue entry: what it is, what it serves, and under what terms. It carries no measurement — the live readings from this provider are fetched at request time and shown at /space-weather, each with the provider's own timestamp.
What it provides
- Total cloud cover (connected)
- Atmospheric seeing (not connected)
- Sky transparency (not connected)
- Bortle sky brightness (not connected)
Limitations
Connected end-to-end since 2026-08-30, and ONLY for total cloud cover — `cloud_area_fraction` from a general meteorological forecast. That is not astronomical seeing, which is atmospheric turbulence forecast from entirely different model output; it is not sky transparency; and it is not sky brightness. A clear forecast and terrible seeing are an ordinary combination, and nothing here derives one from the other or renames it. It is the only provider on this platform fetched from the reader's browser rather than the server: the request needs an observing location, so it is made by their own device, directly to the institute, only on an explicit press, with the coordinates rounded to about a kilometre and the exact URL shown before and after. No forecast is fetched for a reader who does not ask. Seeing, transparency and light pollution remain unconnected: no licence-safe open provider of any of them has been found, and none is ever assumed.
Organisation & phenomena
Knowledge connections
- Associated withWeather Integration
- Associated withBortle Sky-Brightness Integration
Sources
The primary and reference sources this topic draws on.
- MET NorwayNorwegian Meteorological Institute
Global weather forecasts, including total cloud cover, from a national meteorological service.