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         ELECTRONIC NEWSLETTER OF THE EUVE OBSERVATORY 
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Vol 2, No. 12 12/6/92                                ISSN 1065-3597
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TWO NEW EXTRAGALACTIC EUVE SOURCES DISCOVERED
--------------------------------------------
Herman Marshall announced to the EUVE science team the discovery
of two new EUVE extragalactic sources from analysis of the first
22 days of the EUVE sky survey. Both were detected in the
EUVE Lexan filter.

SECOND RELEASE OF EUVE BRIGHT SOURCE LIST
_________________________________________
Bob Patterer presented the second release of the internal EUVE
Bright Source List to the science team. This release covers
the first 22 days of the sky survey and includes some new sources
for the first 16 day period. The total number of definite
sources for the first 22 days stands at 59, with a large number of
possible sources being analysed further.  Optical ID work
has begun with Dr Dopita and Dr Shara for sources with no
immediate optical counterparts.

An analysis of the relative counts of sources in the 4 separate
EUVE catalogues ( one for each bandpass) is under way. For the
period under analysis 36 definite sources were detected in the
Lexan (100A) filter, 18 in the Al/C (200 A), 8 in the 
"Dagwood" filter (400A) and 8 in the Tin (600 A) filter.

NO DEGRADATION IN EUVE PERFORMANCE DETECTED IN ORBIT SO FAR
___________________________________________________________
David Finley and Jean Dupuis presented preliminary analysis of
in orbit calibration data for the calibration white dwarf WD 2309.
This source has now been re-observed twice during the sky survey 
no change in flux was detected to within a few percent indicating
that the instrument sensitivity is stable.

VW Hyi WAS OBSERVED DURING FLARE
________________________________
John Vallerga confirmed that the CV VW Hyi as detected during
the "normal" flare during the outburst reported by the AAVSO.

EUVE COOL STAR DATA INTERPRETED
_______________________________
Dr Alex Brown gave a seminar at CEA in which EUVE data on
cool stars was discussed. Of particular note is that the
data on the corona of alpha Cen ( Vedder et al in prep)
shows that the emission measure distribution as a function
of temperature is much steeper than previous analyses of
coronae had concluded.

EUVE ARCHIVE RELEASES SPECTRUM OF FEIGE 24 
------------------------------------------
The DA white dwarf Feige 24 was recently observed by the EUVE for
wavelength and boresight calibration purposes.  The Archive is now
pleased to announce the release of a preliminary extraction of the
spectrum of Feige 24 from the medium wavelength spectrometer, which
covers a wavelength range of approximately 140-380 Angstroms.  The
exposure time of the observation was about 45000 seconds.

The following list summarizes the EUVE spectral data released by the
Archive to date: Approved Guest Observers interested in the dates for
release of other calibration spectra should contact the archive.

continuum_source.spec:	continuum source spectrum for WD1620-391 
                        from short wavelength spectrometer;no aspect   
			correction has been applied
filteredge_source.spec:	EUVE continuum source showing 170A
                        filter edge and background counts
AUMIC_SW.spec: 		short wavelength spectrum of the late type star
                        AU Mic
AUMIC_SW.spec: 		medium wavelength spectrum of the late type star
			AU Mic
AUMIC_SW_FLARE.spec: 	short wavelength spectrum of the late type star
                        AUMIC during flare outburst
AUMIC_SW_QUIET.spec: 	short wavelength spectrum of the late type star
                        AUMIC in quiescence
PKS2155-304_SW.spec: 	short wavelength spectrum of the extragalactic source
                        PKS 2155-304
WD1845+019_LW.spec: 	long wavelength spectrum of the DA-type star
                        WD1845+019
WD1845+019_MW.spec: 	medium wavelength spectrum of the DA-type star    
			WD1845+019
WD1845+019_SW.spec:  	short wavelength spectrum of the DA-type star
                        WD1845+019
WD2309+105_LW.spec: 	long wavelength spectrum of the DA-type star
                        WD2309+105
WD2309+105_MW.spec: 	medium wavelength spectrum of the DA-type star       
			WD2309+105
WD2309+105_SW.spec: 	short wavelength spectrum of the DA-type star
                        WD2309+105
MCT2020-4234_SW.spec: 	short wavelength spectrum of the DA-type star
                        MCT2020-4234
FEIGE24_MW.spec: 	medium wavelnegth spectrum of the hot DA-type star
                        Feige 24

If you have not used the EUVE public archive, you may obtain help by
sending e-mail to archive@cea.berkeley.edu with a message containing
the word "help" (omit quotes) on the first line of the main body of
the text (ie not in the subject field), with no preceding spaces. A
file containing information will be returned to you automatically.
	Jeremy Drake, EUVE Archive Scientist
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The EUVE Electronic Newsletter is issued by the  Center  for  Ex-
treme  Ultraviolet Astrophysics, University of California, Berke-
ley. The opinions expressed are those of the  authors.   Publish-
ers:  Roger F. Malina, C. Stuart Bowyer.Funded by NASA Contracts
NAS5-30180 and  NAS5-29298.
Send newsletter correspondence to: carlos@cea.berkeley.edu (Internet)
EUVE Public Archive via FTP: ftp.cea.berkeley.edu, pub/archive
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The EUVE Project is managed by NASA's GSFC.  The Project  Manager
at  GSFC  is  Mr.  Paul Pashby, the Project Scientist is Dr. Yoji
Kondo, the Deputy Project Scientist is Dr. Ronald Oliversen.  The
NASA  Headquarters  EUVE Program Scientist is Dr. Robert Stachnik
the Deputy Program Scientist is Dr.  Derek  Buzasi,  the  Program
Manager is  Dr. Guenter Riegler.  The Project Operations Director
is Mr. Kevin Hartnett.  Information  on  the EUVE  Guest Observer 
Program is available from:  Dr. Yoji Kondo,  Mail Code 684  GSFC, 
Greenbelt, MD 20771 (301)286-6247; euve@stars.SPAN.NASA.GOV