Home›Astronomical imaging›air mass🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPolskiРусскийالعربية한국어中文日本語EntityQ352923· pop 12· linked from 42 articlesair massoptical path length through Earth’s atmosphere for light from a celestial sourceWikidata factsShow 1 more factCommons categoryAir mass (astronomy)Sources (1)wikidata.orgvia Wikidata · CC0Available in 11 languagesFrançaisDeutsch中文РусскийالعربيةArmenianNederlandsPolskiUzbek한국어ConnectionshorizonEntityzenithEntityCategoriesAstronomical imagingAtmospheric optical phenomenaIgnored ISBN errorsObservational astronomyOptical quantities