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Introduction Data policy and publications
Appended magnetic observations
Acknowledgements
FTP access

Debrecen Photoheliographic Data
Győri, L., Baranyi, T., Ludmány, A.

DATA POLICY: If the DPD data are used in any publications, please refer to these papers:
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, (), 1-22, 2016, DOI: 10.1007/s11207-016-0930-1
and
Győri, L., Baranyi, T., Ludmány, A., Photospheric data programs at the Debrecen Observatory, Proc. of the Intern. Astron. Union, 6, Symp. S273, August 2010, 403-407, 2011, DOI: 10.1017/S174392131101564X
If the Debrecen tilt angle data are used in any publications, please also refer to this paper:
Baranyi, T.: 2015, Comparison of Debrecen and Mount Wilson/Kodaikanal sunspot group tilt angles and the Joy's law, MNRAS, 447, (4): 1857-1865, doi:10.1093/mnras/stu2572


Introduction
The Debrecen Photoheliographic Data (DPD) sunspot catalogue is compiled as a continuation of Greenwich Photoheliographic Results (GPR). This program has been commissioned by the International Astronomical Union. The basic data in a sunspot catalogue are the heliographic positions and the areas of the sunspots. The data are supplemented with images of sunspot groups, scans of full-disk white-light observations, and magnetic observations as well as their user-friendly HTML presentation. The catalogue is mainly based on our own (Debrecen and Gyula) full-disk white-light observations but the gaps in our observations are  filled in with solar images from other observatories.
Description of the data: DPDformat.txt and README.txt.
Additional table: Sunspot group tilt angle database derived from DPD - ftp access.

Sunspot data and images of are now available for the following years (with its status and the date of the last modification, see also the page on News ):


- - - GPR 1874-1976 1974
preliminary incomplete
2016-06-09
1975
preliminary incomplete
2014-04-22
1976
preliminary incomplete
2014-04-22
1977
final complete
1978
preliminary complete
1979
preliminary complete
2015-06-15
1980
preliminary complete
2015-06-19
1981
preliminary complete
2015-06-20
1982
preliminary complete
2015-06-30
1983
preliminary complete
2015-07-01
1984
preliminary complete
2015-07-07
1985
final complete
2015-07-10
1986
final complete
2010-07-21
1987
final complete
2014-04-08
1988
final complete
2010-07-21
1989
preliminary complete
2014-04-11
1990
preliminary complete
2016-06-03
1991
preliminary complete
2015-07-06
1992
preliminary complete
2015-06-19
1993
final complete
2010-07-21
1994
final complete
2010-07-21
1995
final complete
2010-07-21
1996
final complete
2010-07-21
1997
final complete
2010-07-21
1998
final complete
2010-07-21
1999
final complete
2014-04-15
2000
final complete
2014-05-13
2001
preliminary complete
2015-07-18
2002
preliminary complete
2014-03-11
2003
preliminary complete
2014-03-11
2004
preliminary complete
2011-01-09
2005
final complete
2013-07-27
2006
final complete
2011-01-04
2007
final complete
2010-07-21
2008
final complete
2010-07-21
2009
final complete
2010-07-21
2010
preliminary complete
2011-08-26
2011
final complete

2012
final complete
2013
final complete
2014
final complete
SDO
2015
preliminary complete
SDO
2016
preliminary incomplete
SDO



The time series of the daily data is also available (dailyDPD1974_2016.txt),   and all the data and images can be downloaded from our ftp site in a direct way or by using an online MySQL query for DPD.

Publ. Debrecen Obs. Heliogr. Ser.:
The volumes of DPD published here are the electronic publications of the volumes of Publications of Debrecen Heliophysical Observatory Heliographic Series.

Butterfly diagram based on DPD:
butterfly_of_DPD



Contact person:

Tünde Baranyi (baranyi[at]tigris.unideb.hu)
Requests, comments, questions or bug-reporting are welcome.