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   INFORMAL ELECTRONIC NEWSLETTER FOR THE EUVE SCIENCE PAYLOAD
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    Volume 1, Number 1                          July 8, 1991
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                         From the Editor
                         --------------

Welcome to the first edition of  the  Electronic  Newsletter  for
NASA's   Extreme  Ultraviolet Explorer Science Payload, published
by the Center for Extreme Ultraviolet Astrophysics at the Univer-
sity  of  California, Berkeley. We  hope to issue this newsletter
on a monthly basis, but we also want to be flexible and use it to
report news about the EUVE Science Payload and events of interest
to users of the EUVE science data.

We welcome your correspondence.  Please  send  us  your  comments
about  this  publication.   Also,  share  this resource with your
colleagues.  We are still building our mailing list, so  send  us
any new names and addresses of interested subscribers.  If you DO
NOT want to continue receiving the newsletter, notify us  at  the
same address and we will remove you from the list.

Address all electronic correspondence to: pub@ssl.berkeley.edu

                                        --Camille Trentacoste
                                          Managing Editor

                        EUVE Launch Date
                        ----------------

The EUVE Launch Date is December 12, 1991.


                         Science Payload
                         ---------------

The EUVE Science Payload is in excellent condition. During  June,
a problem developed on one of the power supplies for the on-board
ion pumps.  The supply was removed and repaired and is now  being
re-qualified   before being re-installed.  Ground operations pro-
cedures have been modified to ensure that the on-board ion  pumps
are  operated  using the external nal supplies whenever possible.
The ion pump power supplies are used for EUVE  ground  operations
and In-Orbit Checkout.   They will not operate during the science
phases of the EUVE mission.

Other science payload activities include final  qualification  of
the backup detectors and filters.

                     Guest Observer Program
                     ----------------------

Based on the launch date of December 12, 1991, the key dates  for
the EUVE Guest Observer program are:

        - August 1991: release of the NASA Research Announcement

        - September 1991: Guest Observer handbook distribution

        - December 12, 1991: Launch

        - January 1992: Guest Observer Proposals due

        - May 1992: Time allocations and support announced

        - August 1, 1992: Start of EUVE Guest Observer Phase


                EUVE Science Software Development
                ---------------------------------

Rev 7.1 of the EUVE End-to-End Software has  been  frozen  at  UC
Berkeley  and is currently under test prior to its release in mid
July.  Rev 7.1 is the version of  the  code  which  contains  all
``drop-dead''  software  required for minimum operations and sci-
ence analysis requirements. The review of the  Rev  7.1  software
package is scheduled for July 17 at UC Berkeley.

The next EUVE Science Operations Center and Science Staff simula-
tion is scheduled for July 11, 1991.


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The EUVE Electronic Newsletter is issued on a monthly  basis,  or
as  news  events arise, by the Center for Extreme Ultraviolet As-
trophysics at the Space Sciences Laboratory, University of  Cali-
fornia,  Berkeley.  The  opinions  expressed are those of the au-
thors.

Publisher: Roger F. Malina, Managing Editor: Camille Trentacoste

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            Address all newsletter correspondence to:
                 pub@ssl.berkeley.edu (Internet)

****************************************************************

This newsletter is funded by NASA Contract NAS5-30180.

The EUVE Project is managed by NASA's Goddard Space Flight Center
in  Greenbelt, MD.  The EUVE Project Manager at GSFC is Mr. Frank
Volpe, the GSFC Project Scientist for EUVE is Dr. Yoji Kondo. The
NASA  Headquarters EUVE Program Scientist is Dr. Robert Stachnik,
the NASA Headquarters EUVE Program Manager is Mr. John Lintott.

Further information about the EUVE Guest Observer Program can  be
obtained from:

        Dr. Yoji Kondo
        Mail Code 684
        Goddard Space Flight Center
        Greenbelt, MD 20771

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