EEEEEEEEEEE   U         U    V           V   EEEEEEEEEEE
     E             U         U     V         V    E
     E             U         U      V       V     E
     EEEEEEE       U         U       V     V      EEEEEEE
     E              U       U         V   V       E
     E               U     U           V V        E
     EEEEEEEEEEE      UUUUU             V         EEEEEEEEEEE
Vol 2, No. 10 11/14/92                                ISSN 1065-3597

EUVE discovers brightest EUV source in the sky
Dr John Vallerga has reported to the EUVE science team that the B star,
epsilon Canis Majoris, is the brightest EUV source in the sky.
It was detected in the tin bandpass (centered at 600A) at approximately
100 cps, and was also detected in the "Dagwood" filter centered at 400A.
The source is in the direction of the ISM tunnel previously
reported by Berkeley scientists. Because of the brightness of the flux at
long wavelengths, epsilon CMa has been added to the EUVE calibration program.

Dr Vallerga announced to the EUVE science team that EUVE has detected
and monitored the eclipsing cataclysmic variable UZ For. This CV
was originally discovered by EXOSAT and not detected by ROSAT WFC.


Several additions to the EUVE Bibliography have been made in the last
month.  The complete bibliography of EUVE papers from the Center for
EUV Astrophysics  is available from the Public Archive via ftp.  The
file EUVE_bib is a listing, in troff format, of all the  EUVE papers,
categorized by subject.

To request one or more papers, e-mail,
giving  your postal address and the number(s) of the paper(s) you want
from the list.

The M0Ve star and calibration target AU Mic was seen to flare during
the In Orbit Calibration (IOC) observation which was carried out in the
early phase of the mission.  The Public Archive has released two more
1x spectra of AU Mic from the EUVE Short Wavelength (SW) spectrometer,
one representative of the flare ourburst, and one representative of quiescence.
Since no GO proposals were received by NASA for this target, this
data will not be released (for budgetary reasons) for scientific analysis
until the second round of the EUV Guest Observer Program. Scientists
interested in the scientific analysis of this data should contact
Dr Yoji Kondo, the EUVE Project scientist.

The SW spectrum of the DA white dwarf MCT2020-4234 has also been
recently released.  This calibration target was observed for boresight
and flux-throughput purposes.

If you have not used the EUVE public archive, you may obtain help by
sending e-mail to with a message containing
the word "help" (omit quotes) on the first line with no preceding
spaces. A file containing information will be returned to you

	Jeremy Drake
	EUVE Archive Scientist

Results from the "Taste test" comparing detection algorithms.
Review of the source detection algorithms tested over the last several
weeks left many questions unanswered.  Although no method was clearly
superior for detecting scanner sources, an approach was adopted for pro-
cessing the data and gradually improving the algorithm selected. Re-Proce-
ssing of the first 22 days of survey data should be completed by early
next week.  For the Deep Survey Spectrometer (DS/S), none of the algo-
rithms resulted in a satisfactory method for detecting sources. Work on
the DS/S detection algorithms has been suspended in favor of improving
the scanner algorithms. As a result the collation of EUVE bright
source lists will be delayed.

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: (Internet)
EUVE Public Archive via FTP:, pub/archive
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

[HomePage] [Email] [Search] [Glossary]

Page created by
Last modified 10/4/97