Tips
Rainer
March 14, 2026
Hiking
The Chelmos Observatory (Greek: Αστεροσκοπείο Χελμού) is a major astronomical research facility located on the summit of Neraidorachi in the Chelmos mountain range.
It is situated at an altitude of
2,340 meters above sea level. This location was chosen because it is among the darkest places in continental Europe and is hardly affected by artificial light pollution.
The observatory is involved in important international projects:
It was selected by the ESA
as the first optical ground station under the ScyLight program to test laser communication with satellites.
It is situated at an altitude of
2,340 meters above sea level. This location was chosen because it is among the darkest places in continental Europe and is hardly affected by artificial light pollution.
The observatory is involved in important international projects:
It was selected by the ESA
as the first optical ground station under the ScyLight program to test laser communication with satellites.
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Nearby routes
Best routes near Chelmos Observatory
4.3
(4)
11
hikers
12.1km
04:15
650m
650m
Moderate hike. Good fitness required. Easily walkable paths.
Moderate
Details
Informations
Elevation 2,280 m
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Tuesday 3 November
15°C
2°C
17 %
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Max wind speed: 8.0 km/h