DPR 1977 (2nd ed):
          DEBRECEN PHOTOHELIOGRAPHIC RESULTS FOR THE YEAR 1977
on the basis of photographs taken at the observatories of Debrecen(Hungary),
    Gyula(Hungary), Kislovodsk(Russia), Kodaikanal(India), Ebro(Spain)
               by L.Dezso, O.Gerlei and Agnes Kovacs
Publications of Debrecen Heliophysical Observatory Heliographic Series No.1.
                                 1995

        Beginning from January 1977 the Heliophysical Observatory of the
   Hungarian Academy of Sciences in Debrecen undertook the responsibility
   for the continuation of the daily photoheliographic programme of the
   Royal Greenwich Observatory according to Resolution of Commission 10
   of the  International Astronomical Union (IAU), approved by the IAU
   General Assembly  on 2nd September 1976.   Accordingly the Debrecen
   Photoheliographic Results (DPR) is the continuation of the Greenwich
   Photoheliographic Results for the years 1874-1976 (published between
   1884-1980). The first DPR for the year 1977 (DPR 1977) was originally
   printed as a book in 1987.

This is the 2nd edition of DPR 1977 in ASCII version (the typist mistakes
of the 1st edition corrected). Here and in the ASCII version of any further
annual DPRs, all references to DPR 1977 always relates to its 1st (printed)
edition.
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The following FILES contain the DPR 1977 (2nd ed).

README.txt   - This file.

introduc.txt - Material of observation and other particulars.
               The method of observation, reduction and calculation are
               given in more detail in DPR 1977,pp.11-38.

explan.txt   - Only additional remarks to the "explan.txt of DPR 1978",
               where detailed explanations to the tabulated sunspot data
               and the changes and modifications in the presentation of DPR
               on account of the use of the ASCII code are given.

NNNN.rot     - Daily results (positions, areas and other characteristics)
               of sunspots for each day in a whole synodic rotation
               (NNNN is the Carrington rotation number). Data of all sunspot
               groups lasting for two or more days are daily tabulated.
               (The rows contain 84 characters.)

notes.txt    - Additional information on some sunspot groups in order of
               Group Nos.

general.cat  - The catalogue contains particulars of every  g r o u p  of
               sunspots in continuation of the General Catalogue of Sunspots
               of the Greenwich Photoheliographic Results.
               (The rows contain 78 characters.)

recurr.cat   - Catalogue of recurrent  s u n s p o t s  observed in two or
               more consecutive apparitions (i.e. more than one, full or
               partial disc passage).
               (The rows contain 78 characters.)

summary.dat  - A brief descriptive summary of sunspot activity for 1977 and
               tables of mean areas and latitudes data (following Greenwich
               practice).
               In an additional table, disregarding the groups in the limb
               zones, the mean areas and latitudes of the groups, as well as
               of their p- and f-spots are also given separately.
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The DPR is freely available over Internet: by anonymous ftp from
               fenyi.sci.klte.hu (193.6.137.102) from directory /pub/DPR.

If you use DPR data in a published paper, please make adequate reference
to DPR.

If you have any request or comment, please feel free to send e-mail to
one of us: LDezso or AKovacs@solar.stanford.edu
Either can be reached at: Heliophysical Observatory,
                          Hungarian Academy of Sciences
                          H-4010 Debrecen, P.O.Box 30. Hungary
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