About Kryoneri

Kryoneri Observatory (established in 1972) is located in the district of Corinth in the northern Peloponnese at the top of mount Kyllini, at an altitude of 930m, close to Kryoneri village (37˚ 58' 19" North, 22˚ 37' 07" East). It is equipped with a 1.2 m Cassegrain reflector telescope manufactured and installed in 1975 by the British company Grubb Parsons Co., Newcastle. It is one of the largest telescopes in Greece, with many successful scientific observations during its long operation (scientific observations started in 1975). In 2016, the telescope was upgraded in the framework of the ESA program NELIOTA, to monitor the lunar surface for impacts of near-earth objects. In December 2017, the observatory obtained an IAU Minor Planet Center code. The code is “L10”.

Kryoneri Observatory has been utilized as a means of education and astronomy outreach to the general public for many decades. Specifically, it has been used to train students in practical exercises of observational astrophysics, such as photometry of double and variable stars, the study of stellar systems and objects of the solar system and many more. So far, more than forty (40) students from the Universities of Athens, Thessaloniki and Patras have been trained in photometric observations. Since 1995, more than seven thousand (7,000) guests from areas around Kryoneri have visited the Observatory, under the umbrella of either open doors events or specific tour groups. Every year, students of at least twenty (20) schools from the wider area of Corinth or elsewhere visit the Observatory.

An account of the financing of the 1.2m telescope, which became possible due to the bequest of Marinos Korialenios in 1916 and the successful application of Dr. Kotsakis to the Government in 1971, is given in the following article, published in 2007, in the Hipparchos newsletter.



The facilities at Kryoneri Observatory include the dome building, which hosts the telescope, the telescope control and guest house building, a dome housing the small telescope used for atmospheric monitoring, as well as the building that hosts the electrical power equipment and the supporting power generators.

IT Infrastructure

IT facilities at Kryoneri Observatory include a dedicated (microwave) link of 20 Mbps throughput to the NOA Headquarters in Penteli. The connection is highly secured and reliable and is used for live data transfer of all astronomical, meteorological and seismological data produced from the installed scientific instruments. Furthermore, a small LAN (at 100Mbps) has been installed in order to support all the scientific activities and personnel requirements.

In 2016, a new LAN of 1Gbps was installed to support the research activities of the upgraded telescope. In addition, a new UPS system and new lightning and earthing systems were installed to provide advanced robustness and reliability in the whole operation of the Observatory. The main Cluster System consists of two (2) nodes HP DL380 Gen9 Servers. Each Server features the following Specifications: (1)1 x Intel Xeon E5-2660v3 processor, (2)64GB Memory (8x8GB 1Rx4 PC4-2133P-R Kits), (3) 2xInternal Storage HP 300GB 12G SAS 10K 2.5in and (4) Smart Array P440ar/2G FIO RAID Controller HP Ethernet 10Gb 2Port 530SFP+ Adaptor.

Each Server interconnects to an HP 2920-24G Switch through dual 10GbE Fiber Connections. For this reason the Switch features 2xHP 2920 2-port 10GbE SFP+ Modules. The Storage Subsystem consists of an HP MSA 2040 SAN DC SFF Storage which includes an additional HP D2700 Disk Enclosure. The Storage Subsystem is populated with 32xHP 1.2TB 6GB SAS 10K SFF DP ENT HDDs, providing a total RAW capacity of 38.4TB. The SAN Subsystem interconnects to the HP 2920-24G switch through eight Gigabit Ethernet Copper Connections over iSCSI.