Back to the front page of the observatory             
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 this paper:
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
2014-04-22
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
2014-04-22
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
2015
preliminary complete
2016
preliminary incomplete



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.