COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2853

                                    Konkoly Observatory
                                    Budapest
                                    22 January 1986

                                    HU ISSN 0374 - 0676



 IAU ARCHIVES OF UNPUBLISHED PHOTOELECTRIC OBSERVATIONS
             OF VARIABLE STARS (1985/6)



            Summary of changes for 1986

  1. Generally, each file should contain data for only one variable
star. A cover sheet (see format) should be supplied by the author.
  2. More than one variable star can be put in a file, if all the
variable stars are discussed together elsewhere in a widely available
journal. The cover sheet should give the full reference of the published
paper.
  3. Lengthy data can also be submitted on computer tape or
diskettes.

                       Introduction

  The Archives of Unpublished Photoelectric Observations of Variable
Stars was created to provide permanent archives in different parts of
the world. The archives can replace lengthy and expensive tables in
scientific publications by a single reference to the archival file number.
Furthermore, many valuable observations are never used for scientific
publication, and the archives make such observations available to other
astronomers at a time when they might become very important.
  The Publications of the Astronomical Society of the Pacific kindly
publishes the summaries of recent files. Detailed reports can be found
in Pub.Astr.Soc.Pac. 91, 408 (1979), Pub.Astr.Soc.Pac. 93, 528 (1981), and
Pub.Astr.Soc.Pac. 97, 85 (1985).

                 Retrieval of existing files

   Astronomers who wish to obtain copies of deposited data, can do
so by requesting whole files (not partial files) from one of the three
archives:
P.D. Hingley, Librarian, Royal Astronomical Society, Burlington House,
London, W1V 0NL, Great Britain;
Dr. C. Jaschek, Centre de Donnees Stellaires, Observatoire de Strasbourg,
11, Rue de l'Universite, F-67000 Strasbourg, France; or
Dr. E. Makarenko, Odessa Astronomical Observatory, Shevchenko Park,
Odessa 270014, U.S.S.R.
The requested file number should be specified. There is no charge for
short files.

                Submission of new files

   If the new data is not discussed in a scientific paper published in
a widely available astronomical journal, three copies of the data and
five copies of the cover sheet should be sent to the Coordinator, who
will forward the data with the cover sheet to the three archives. One
copy of the cover sheet will be returned to the author with the
assigned file number. Each variable star should be in a separate file,
unless there are compelling reasons for combining stars.
   If the data will be discussed or used in a widely available
astronomical journal, a file number can be requested in advance of
publication from the Coordinator. It might be useful to mention the file
number in the publication. After publication of the paper, three copies
of the data and five copies of the cover sheet should be sent to the
Coordinator. The cover sheet should contain the full reference of the
publication, in which the data is discussed or used. It may not be
necessary to repeat observational details on the cover sheet. We
recommend that all the stars discussed in a single publication be
combined in a single file.
   New files must be printed or handwritten in black ink. We would
like to draw attention to the fact that some computer output or copies
may not have enough contrast to be legible after further copying for
retrieval. The printed part should be no larger than 8 by 10 inches
(20 by 25 cm).



  The cover sheet could be of the following form:

IAU COMMISSION 27                    UNPUBLISHED DATA FILE xxx

x pages, including cover sheet                            Date

        TITLE INCLUDING STAR NAME

Observational details or reference to a published paper.

Name and full address.


   Lengthy data can also be submitted by computer tape (ASCII)
or diskettes to the Centre de Donnees Stellaires in Strasbourg after
informal consultation with the Coordinator and the Centre. Computer
files will have special file numbers with the prefix "C" and will,
at the present time, only be stored in Strasbourg. There are no
computer files at present. Should the paperless transmission
of data become popular among the users of the archives,
we expect to expand this new service.


                       MICHEL BREGER

                       IAU Archives

                       Institute for Astronomy
                       Turkenschanzstr. 17
                       A 1180 WIEN, Austria