COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1099

                                Konkoly Observatory
                                Budapest
                                1976 February 10


    SPECIAL ISSUE OF SOVIET ASTRONOMICAL JOURNAL WILL
         COLLECT INVESTIGATION OF NOVA Cyg 1975




Dear Colleagues,

   The outburst of Nova Cyg 1975 (V 1500 Cyg) is evidently a
unique event. Full light amplitude of this star certainly exceeds
nineteen magnitudes while the highest one among all Novae known
up to date was seventeen magnitudes (CP Pup). Moreover, other 
parameters of V 1500 Cyg show its extraordinarily, too (slow brightening 
up to 16th magnitude, some peculiarity of the pre-maximum
spectrum). High maximum brightness of this Nova makes it an easy
object to investigate by many different methods.
   Results of investigations of Novae usually are published in
many diverse journals and sometimes in those ones which, one can't
easily get. Moscow Bureau of Variable Stars of the USSR Academy
of Sciences and Editors of Soviet Astronomical Journal address
you with the proposal to take part in the special issue of our
Journal which will collect investigation of V 1500 Cyg. You know
of course that our Journal is being doubled in English in USA
and consequently published papers can be read by astronomers over
the world.
   We propose to you and your co-workers to send all the materials 
on V 1500 Cyg for publication in this special issue of Soviet
Astronomical Journal.
   Please send your materials ordered according to usual rules
of our Journal to:

            Editors of Astronomical Journal
            Kuznetzky Most Street, 9/10
            103031 Moscow K-31, USSR

   The deadline for sending manuscripts will be August 31, 1976.


                  PROF. B.V. KUKARKIN
           President of Moscow Variable Stars Bureau

                  PROF. E.R. MUSTEL
        Chief Editor of the Astronomical Journal of the USSR