Astronomical viewpoints

The sky of La Palma owes its exceptional astronomical quality to the fact that it is near the Ecuador and far from tropical storms, between the meridians 17° 43′ 42″ and 18° 00′ 15″ W’ and the parallels 28° 25′ 74″’’ and 28° 51′ 15″, which favor the visibility of the Celeste North Hemisphere and part of the Southern Hemisphere. Being above the thermal inversion of the trade winds, of the phenomenon known as “sea of clouds”, between 1,200 and 1.600 m. of altitude, the atmosphere is clean and lacks turbulence, with a low frequency of high clouds because the “sea of clouds” acts as a filter that prevents the passage of atmospheric pollution. Adverse weather conditions such as the entry of ocean storms and the invasion of Saharan dust have such a low frequency that they do not significantly affect the final computation of nights suitable for observation.