Hungarian historical solar drawings
 
Our observatory hosts two historical solar image databases containing heritages of two former observatories.
The first of them was observed at Ógyalla Observatory founded by Miklós Konkoly-Thege (1842-1916). We have solar observations taken here between 1872 and 1891. The orientation of the observations is Terrestrial north is ~ at the top and the EW side is reversed exept for 1872 when usually Terrestrial north is ~ at the bottom and the EW side is correct (North=E, South=D, East=K, West= N or Ny).
The other set of solar drawings was observed at  the Haynald Observatory in Kalocsa between 1880 to 1919. 
The drawings are also available in an interactive online presentation combined with the data of Greenwich Photoheliographic Results (GPR).

ÓGYALLA OBSERVATORY
1872
(76 days
+ groups + protuberances )
 1873
(14 days
+ groups + protuberances)
 1874
(81 days
+ 5 groups)
 1875
(45 days
+ 2 groups)
 1876
(23 days
+ 6 groups)
 1877
(40 days)
 1878
(38 days)
 1879
(74 days
+ 5 groups)
1880
(2 days
+ 9 groups)
1881
(202 days)
 1882
(224 days)
 1883
(203 days)
 1884
(191 days)
 1885
(221 days)
 1886
(178 days)
 1887
(129 days)
 1888
(111 days)
 1889
(70 days)
1890
(73 days)
 1891
(145 days)







HAYNALD OBSERVATORY

1880
(93 days + 1 group)
 1881
 1882 1883
(107 days)
 1884
(213 days)
 1885
(248 days)
 1886
(232 days)
 1887
(217 days + 3 groups)
 1888
(156 days)
 1889
1890
 1891
(255 days + 57 groups)
 1892
(235 days + 11 groups)
 1893
(166 days)
 		1894
(271 days + 17 groups)
 1895
(258 days + 7 groups)
 1896
(163 days)
 1897
(106 days)
 1898
(171 days + 1 group)
 1899
(198 days)
1900
(180 days + 2 groups )
 1901
(72 days + 1 group)
 1902
(122 days + 1 group)
 1903
(232 days + 2 groups)
 1904
(186 days)
 1905
(214 days + 9 groups)
 1906
(257 days)
 1907
(261 days)
 1908
(256 days + 1 group)
 1909
(255 days)
1910
(252 days)
 1911
(180 days)
 1912
(121 days)
 1913
(69 days)
 1914
(141 days)
 1915
(216 days)
 1916
(231 days)
 1917
(15 days)
 1918
(66 days)
 1919
(14 days)
DATA POLICY: If the HHSD are used in any publications, please refer to this paper:
Baranyi, T., Győri, L., Ludmány, A., On-line Tools for Solar Data Compiled at the Debrecen Observatory and their Extensions with the Greenwich Sunspot Data, Solar Physics, 291, 3081-3102, 2016, DOI: 10.1007/s11207-016-0930-1

ACKNOWLEDGEMENTS
SOTERIA



The digitization of Ógyalla archives has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement No. 218816 between Nov 2008 and Oct 2011. The EC contribution to the costs of the SOTERIA project was 75%,  10% of the SOTERIA-related costs of the Heliophysical Observatory was supported by the National Development Agency under grant agreement No. BONUS_HU_08-BONUS_HU_08/2009-003, and 15% was the institutional contribution. 
The BW digitization of the Kalocsa material was supported by the Hungarian Science Foundation and the millenial Cultural Heritage Program in 2000. The whole Kalocsa material was rescanned with a colour scanner within the project "TÁMOP 4.2.2.C-11/1/KONV/2012-0015" in 2014.