Here the observing schedule for the second semester of 2023.


The Manuals contain all essential information for the observers to make full use of the various systems. The manuals include descriptions of the system functions and capabilities, and modes of operation, and step-by-step procedures for access and use.

Previous Calls & Schedules

Please find below the most recent call issued by the Time Allocation Committee.

All proposals are judged and ranked solely on the basis of scientific merit by our Time Allocation Committee. OPTICON proposals are judged by the OPTICON Time Allocation Committee.

Time Allocation Committee

Koulouridis Elias
Koulouridis Elias Chair
Elias Koulouridis received his Physics Degree in 2003, his MSc in Theoretical, Computational Physics and Astrophysics in 2005 and his PhD in Astrophysics from the University of Patras in 2009. He then worked as a postdoctoral researcher and then a fellow in the National Astronomical Observatory of Athens until 2015. During the period 2015-2019 he worked as a senior postdoctoral researcher in the Département d’Astrophysique of CEA / Saclay in France. In 2019 he joined IAASARS/NOA as an Associate Researcher.
Antonis Georgakakis
Antonis GeorgakakisSenior Researcher
Antonis Georgakakis obtained his PhD in Astrophysics from the Imperial College London (UK) in 1998. He was Postdoctoral Researcher at the University of Birmingham (UK) (1998-2000), at IAASARS (2002-2005) and at the Astrophysics group at the Imperial College (UK) (2005-2006). He was a “Marie Curie” fellow at the Astrophysics group at the Imperial College of London (UK) during 2006-2008. In 2008 he joined IAASARS as an Associate Researcher. From 2011 until 2016 he was on leave of absence at the Max Planck Institute for Extraterrestrial Physics in Garching (Germany). In 2018 he was promoted to a Senior Researcher.
Spyros Basilakos
Spyros BasilakosDirector if IAASARS
Spyros Basilakos is a cosmologist with a career spanning scientific research, academic teaching and science communication. He has held a number of academic positions at various universities around Europe. Spyros Basilakos is the head of the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS) at the National Observatory of Athens. He is President of the Greek National Committee for Astronomy that advises the Greek government for issues which are related with Astronomy and Astrophysics. Also, he is the National Delegate in the International Astronomical Union (IAU).
Panos Patsis
Panos PatsisResearcher
Since 2009 Dr Panos Patsis serves the Research Center for Astronomy of the Academy of Athens as a Research Director and Acting Director.
Padelis Papadopoulos
Padelis PapadopoulosProfessor
Padelis Papadopoulos is an associate professor at the Department of Astrophysics , Astronomy and Mechanics of the Aristotle University of Thessaloniki.

“The earth revolves about the sun in the circumference of a circle, the sun lying in the middle of the orbit, and the sphere of the fixed stars, situated about the same center as the sun, is so great that the circular orbit of the earth is as small as a point compared with that sphere .”

Aristarchus of Samos , c. 270 BCE

Access to Helmos

Official visitors and observers are kindly asked to contact NOA before their arrival in order to arrange for their transportation to the Observatory.



Between November and May the site is usually covered by snow and is accessible through the nearby ski lift and track.

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