Ключевые слова: astronomical, astronomical observatory, astronomy, canary island, canary islands, clear sky, day, explore tenerife, instituto de astrofsica de canarias, national park, observatorio del teide, observatory, observatory near teide, slooh teide astronomical observatory, sto, summer, summer season, teide, teide national park, teide observatory, teide volcano, tenetife, volcanic landscape, volcano,