diff --git a/po/CMakeLists.txt b/po/CMakeLists.txt
index d6830867c19e1a..8efee32649b96f 100644
--- a/po/CMakeLists.txt
+++ b/po/CMakeLists.txt
@@ -135,6 +135,7 @@ ENDMACRO(GETTEXT_CREATE_TRANSLATIONS )
 
 
 ADD_SUBDIRECTORY(stellarium) 
+ADD_SUBDIRECTORY(stellarium-sky)
 ADD_SUBDIRECTORY(stellarium-skycultures) 
 ADD_SUBDIRECTORY(stellarium-planetary-features) 
 IF(ENABLE_SCRIPTING)
diff --git a/po/stellarium-skycultures/CMakeLists.txt b/po/stellarium-skycultures/CMakeLists.txt
index 7e298547c3fa13..7aa683556bb042 100644
--- a/po/stellarium-skycultures/CMakeLists.txt
+++ b/po/stellarium-skycultures/CMakeLists.txt
@@ -2,4 +2,35 @@ FILE(GLOB poscfiles RELATIVE "${CMAKE_SOURCE_DIR}/po/stellarium-skycultures/" "*
 LIST(SORT poscfiles)
 STRING(REGEX REPLACE ".po" "" outposcfiles "${poscfiles}")
 
-GETTEXT_CREATE_TRANSLATIONS(stellarium-skycultures DEFAULT_TARGET ${outposcfiles})
+# This is a copy of the implementation of GETTEXT_CREATE_TRANSLATIONS, but
+# without updating the .po or .pot files, because they are made by an external
+# script from a separate repository.
+set(_domain stellarium-skycultures)
+
+file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/translations/${_domain})
+
+SET(_gmoFiles)
+
+SET(_addToAll "ALL")
+
+FOREACH (_lang ${outposcfiles})
+     GET_FILENAME_COMPONENT(_absFile ${_lang}.po ABSOLUTE)
+     FILE(RELATIVE_PATH _relFile ${PROJECT_SOURCE_DIR} ${_absFile})
+     SET(_gmoFile ${CMAKE_BINARY_DIR}/translations/${_domain}/${_lang}.qm)
+
+     # Convert a PO file into a qm file.
+     ADD_CUSTOM_COMMAND(
+          OUTPUT ${_gmoFile}
+          COMMAND ${lconvert_executable} -i ${_absFile} -o ${_gmoFile}
+          DEPENDS ${_absFile}
+     )
+
+     INSTALL(FILES ${_gmoFile} DESTINATION ${SDATALOC}/translations/${_domain}/)
+     SET(_gmoFiles ${_gmoFiles} ${_gmoFile})
+ENDFOREACH (_lang)
+
+# Create the .qm files when building the "translations-<DOMAIN>" and
+# "translations" targets.
+ADD_CUSTOM_TARGET(translations-${_domain} ${_addToAll} DEPENDS ${_gmoFiles})
+ADD_DEPENDENCIES(translations translations-${_domain})
+SET_TARGET_PROPERTIES(translations-${_domain} PROPERTIES FOLDER "po")
diff --git a/src/core/StelTranslator.cpp b/src/core/StelTranslator.cpp
index dc46b2b394163b..3bf4348ab12586 100644
--- a/src/core/StelTranslator.cpp
+++ b/src/core/StelTranslator.cpp
@@ -207,22 +207,12 @@ void StelTranslator::initIso639_1LanguageCodes(const QString& fileName)
 	}
 }
 
-static constexpr char skyCulturePrefix[] = "stellarium-skycultures-";
 StelSkyTranslator::StelSkyTranslator(const QString& skyCultureId, const QString& langName)
-	: commonSkyTranslator("stellarium-skycultures", langName)
+	: StelTranslator("stellarium-sky", langName)
+	, commonSkyTranslator("stellarium-skycultures", langName)
 {
-	domain = skyCulturePrefix + skyCultureId;
-	this->langName = langName;
-	translator = new QTranslator();
-
-	const auto path = StelFileMgr::getInstallationDir() + "/skycultures/" + skyCultureId + "/translations/" + getTrueLocaleName()+".qm";
-	const bool res = translator->load(path);
-	if (!res)
-		qWarning() << "Couldn't load sky translations for language" << getTrueLocaleName() << "in sky culture" << skyCultureId;
-	if (translator->isEmpty())
-		qWarning() << "Empty translation file for language " << getTrueLocaleName() << "in sky culture" << skyCultureId;
 	if (commonSkyTranslator.isEmpty())
-		qWarning() << "Empty skyculture-independent translation file for language " << getTrueLocaleName() << "in sky culture" << skyCultureId;
+		qWarning() << "Empty skyculture-independent translation file for language " << getTrueLocaleName();
 }
 
 QString StelSkyTranslator::tryQtranslate(const QString& s, const QString& c) const