Global High Resolution H-alpha Network


BBSO | KSO| CAO| Meudon | USET | Pic du Midi | OAUC | YNAO | HSOS


Address: Big Bear Solar Observatory
40386 North Shore Lane
Big Bear City, CA 92314-9672

Big Bear Solar Observatory

Phone: ++ 909 866-5791
Fax: ++ 909 866-5791 ext 24 (Office)
++ 909 866-4240 (Dome)
Location: 116° 54.9' W
34° 15.2' N
2067 m
Big Bear Solar Observatory exploits the excellent climatic conditions of Big Bear Lake to study the Sun. It is located in the middle of Big Bear Lake to reduce the image distortion which usually occurs when the Sun heats the ground. Turbulent motions in the air near the observatory are also reduced by the smooth flow of the wind across the lake. These conditions, combined with the usually cloudless skies and the clarity of the air at 2000 meters elevation, make the observatory a premier site for solar observations. The observatory was built by the Californian Institute of Technology in 1969 and was transferred to the New Jersey Institute of Technology on 1 July 1997.


Address: Kanzelhöhe Solar Observatory
A-9521 Treffen

Kanzelhoehe Solar Observatory

Phone: ++43 4248 2717
Fax: ++43 4248 2717 ext 15
Location: 13 54.4' E
46 40.7' N
1526 m
Kanzelhhe Solar Observatory is the only solar observatory in Austria and is operated by the Institute for Geophysics, Astrophysics and Meteorology of Graz University. Because of the favorable climate and the convenience of year-around access via a cable railway, the observatory was built near Villach (Carinthia) in 1943. Another advantage of KSO is the permanent presence of staff and consequently a continuous operation throughout the year.


Address: Catania Astrophysical Observatory
Via S. Sofia, 78 - Citt Universitaria
95123 Catania, Italy

Catania Astrophysical Observatory

Phone: +39 095 9332-111
Fax: +39 095 330592
Location: 1h00m17.4s E
37 31' N
193 m
The Catania Astrophysical Observatory (OACt) is a research institute and is part of the Italian National Institute for Astrophysics (INAF). OACt has two different sites, where also researches of the Department of Physics and Astronomy (DPA) of the Catania University work. The main site is in the Catania University Campus ( Citt Universitaria), where solar observations are peformed. The second site is mountain station M.G. Fracastoro , which is used for night observations. The station is located on the southern slope of Mt. Etna (3340 m) - the largest active volcano in Europe. The geographical location of Catania - a sunny town in Southern Italy (Sicily) - has made possible an almost 100-year long uninterrupted patrol of solar activity.


Address: Observatoire de Paris
Section de Meudon
Place Jules Janssen
92195 MEUDON
Meudon Logo

Meudon Observatory

Phone: +33 - 145077530
Fax: +33 - 145077959

Location: South-West of Paris,
+48°48' (North)
-02°14' (East)
165 meters
Meudon Observatory was funded in 1876 by famous astronomer Jules Janssen. It merged with Paris Observatory (previously funded in 1667 by King Louis XIV) in 1926. Meudon was initially a solar observatory nut nowadays it is a large observatory (200 researchers), which researches in almost all topics of astronomy and astrophysics. Regular observations of the sun began around 1910 with the spectroheliograph of Deslandres, a new technique which was tested by Hale in the US at the same time. Our observations are made with a modern version of the spectroheliograph. Despite the oceanic climate of Meudon, we succeed to get images of the sun almost 300 days per year, very often between two clouds! The seeing is in average around 2 arc sec.

Uccle Solar Equatorial Table

Address: Observatoire Royal de Belgique ?Koninklijke Sterrenwacht van Belgïe
3, avenue Circulaire
B-1180 Bruxelles

Uccle Solar Equatorial Table

Phone: ++32-2-3730211
Fax: ++32-2-3749822
Location: 4° 21.55' E
50° 47.87' N
107 m (altitude)
The Royal Observatory of Belgium (ROB) is a Federal Research Institute located in the southern suburbs of Brussels. Within the ROB, the Solar Influences Data analysis Center (SIDC) hosts two international solar data centers (IAU World Data Center "Sunspots" ISES Regional Warning Center Brussels) and participates to multiple space programs (SOHO, STEREO, SDO, PROBA2). It also runs two ground-based facilities for radio and optical monitoring of solar activity. The optical facility (USET) is located within the ROB buildings, allowing easy operation of the instruments and the real-time processing and diffusion of the solar data, in support to the operational space-weather services.


Address: Observatoire du Pic du Midi
Observatoire Midi Pyrénées
57 avenue d'Azereix
65000 Tarbes

Pic du Midi

Office Phone: +33 5 62 56 60 29
Dome Phone: +33 5 62 53 31 11
Fax: +33 5 62 34 67 33

Location: South-West of Paris,
42°56'11'' (North)
0°08'34'' (East)
2877 meters
Pic du Midi Observatory is a part of Observatoire Midi Pyrénées which is a research and educational institute of Paul Sabatier University (Toulouse, France). Pic du Midi is a mountain station (2877m) which is well placed for clear sky and good seeing atmospheric conditions. Solar observations are performed with a 50 cm refractor, "Lunette Jean Rösch", and several coronagraphs. A daily survey of the dynamical phenomena appeared in the inner part of the solar corona and in the chromospheric layers is made with the new solar instrument CLIMSO.


Address: Observatório de Coimbra, Portugal

Observatory of Coimbra University

Phone: +351239802370
Fax: +351239802370
Location: 40° 11' 52'' E
08° 26' 37'' N
127.78 m
The Observatório Astronómico da Universidade de Coimbra (OAUC) was created as a result of Universidade de Coimbra's (U.C.) 1772 reform performed by the Marquis of Pombal. In 1912 OAUC started a plan for the installation of a spectroheliograph in Coimbra in collaboration with researchers from the Paris Obsevatory. This instrument is similar to the one still working at Meudon. In 1926 began the regular observations of the sun in the CaII K3 and K1v bands (H-alpha line observations and dopplergrams started respectively in 1989 and 2009). In 1967 the spectroheliograph was moved to OAUC's facilities in Santa Clara, where it has remained until the present days. In 2007 was installed a CCD camera. In 2012 OAUC was merged with Instituto Geofísico da Universidade de Coimbra, an institution that carries out the acquisition of meteorological (since 1964), geomagnetic (since 1866) and seismic (since 1891) data from Coimbra. This gave rise to the new Observatório Geofísico e Astronómico da Universidade de Coimbra.


Address: Yunnan Astronomical Observatory
P.O. Box 110
Kunming 650011
P.R. China

Yunnan Observatory

Phone: ++ 871 3347085
Fax: ++ 871 3358437
Location: 102° 47.3' E
25° 1.5' N
1940 m
Yunnan Astronomical Observatory is one of the five astronomical observatories in China, all operated by the Chinese Academy of Sciences. It is located in the suburban of Kunming City in the southern part of China. It has the best weather conditions of all Chinese observatted in the suburban of Kunming City in the southern part of China. It has the best weather conditions of all Chinese observatories, with about 300 clear days a year and excellent sky transparency.


Address: Huairou Solar Observing Station
National Astronomical Observatories
20A, Datun Rd., Chaoyang Dist.
Beijing 100012
P.R. China

Huairou Observatory

Phone: +86-10-64888769; +86-10-69644338
Fax: +86-10-64888716; +86-10-69648246
Location: 116.6° E
40.4° N
62 m (altitude)
Huairou Solar Observing Station (HSOS) is located on a small island near the north bank of Huairou Reservoir, 60 km north of Beijing. The water, which surrounds the station extends about 2 km to the east, south and west of the observatory. The observing dome is on the top of a 31-meter tower. The HSOS's telescope is characterized by removable dome, which can be moved away from the telescope when the seeing is favorable. There are a total of approximately 300 days favorable for observations per year. HSOS is one of five observing stations of the newly established National Astronomical Observatories of China (NAOC).