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[vsnet-obs 421] NAS.VSS observations of AL Com - Report no. 2
- Date: Sun, 09 Apr 95 17:56:34 -0400
- To: varstars@lists.funet.fi, vsnet-obs, b.h.granslo@astro.uio.no
- From: b.h.granslo@astro.uio.no id <20969-0@mons.uio.no>; Sun, 9 Apr 1995 17:57:51 +0200
- Subject: [vsnet-obs 421] NAS.VSS observations of AL Com - Report no. 2
- cc: aavso@cfa0.harvard.edu, green@cfa.harvard.edu, stigfo@powertech.no
Norwegian Astronomical Society - Variable Star Section
===== AL COMAE BERENICES - NAS.VSS REPORT NO. 002 (1995 Apr 9) =====
This SU UMa/WZ Sge type dwarf nova is currently undergoing a very rare
outburst and the following observations are available by observers of
NAS.VSS:
----------------------------------------------------------------------
YYYY MM DD.DDD LIGHT ESTIMATES MAG CL INSTRUM. OBSERVER
----------------------------------------------------------------------
1995 04 07.860 A-5;B-5 12.4 2 C203,123x Granslo, B.H.
1995 04 07.892 B-6;C+7 12.7 2 C203,133x Dahle, H.
1995 04 08.912 A-7;B-6;E+6;C+8 12.6 1 C203,222x *Granslo, B.H.
1995 04 08.983 B-7;C+6 12.8 2 C203,133x *Dahle, H.
----------------------------------------------------------------------
All observations are visual. Time system is year (YYYY), number of
month (MM) and date with desimals in Universal Time (DD.DDD). Magni-
tudes are calculated from Pogson's step method. CL = class: estimated
accuracy of observation: 1 = good (+/- 0.1 mag.); 2 = fair (+/- 0.2
mag.); 3 = poor (+/- 0.3 mag. or worse). Instrument (type, aperture in
millimeters, and magnification): C = catadioptic telescope (SCT).
Comparison stars (identifications from TA Electronic Circular No. 943;
magnitudes by Stanton and Bertola): A = 11.85; B = 11.96; E = 13.2;
C = 13.51. An asterisk (*) indicates new observations since NAS.VSS
report no. 1. Observers: H. Dahle (Oslo, Norway); B. H. Granslo
(Fjellhamar, Norway).
Yours sincerely,
Bjorn H. Granslo
Director, NAS.VSS