THE ASTRONOMER Electronic Circular No 577   1991 November 5 20.20UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
Telex: 9312111261 Answerback: TA G                     JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885                       PRESTEL 256471074
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FAX AND ANSWERING MACHINE
Confirming the preliminary message, I now have a combined FAX and
answering machine installed at TA HQ through the kind assistance
of the British Astronomical Association. The existing telephone
number of (0256) 471074 is now used for all services.
In the event of a discovery during the night, the editor has a few
rings in which to wake up and answer the call. Failing this the
machine takes over and will automatically accept a fax if the
usual signals are sent, or in the case of a voice call it will
invite you to leave a recorded message on tape. On most occasions
this tape will be checked early morning but, as a precaution, it
is suggested that in addition to leaving your recorded message that
you also telephone one of the back-up numbers detailed in TA.
The BAA and TA are currently investigating possible new FAX
services to offer astronomers and we will keep you informed.

EDITORS ABSENCE
I shall be away from Friday evening and will return Sunday night,
during which time I shall not be contactable. Please refer any
queries to Martin Mobberley or Denis Buczynski during that period.

EF PEGASI
Further estimates of the recent outburst (cf E570,573,574):
1991 Oct 14.913UT, [13.0 (P.Schmeer - correction to E570);
22.74, 11.7 (Schmeer); 23.85, 12.8 (T.Kinnunen, Finland - stars
well split at x250); 25.90, 12.2 (Schmeer); 26.81, 12.4 (Schmeer).

J. DeYoung and R. Schmidt, U.S. Naval Observatory, communicate:
"With the 0.6-m reflector, 374 CCD images were made in the Kron-
Cousins I band between Oct. 18.988 and 27.047 UT, during which time
seven maxima were observed.  A linear least-squares fit to these
observations and to the Kyoto report (E573) yields the ephemeris
HJDmax = 2448547.954 (+/- 0.006) + 0.08696 (+/- 0.00008)E.  The
period lies outside the period gap for cataclysmic variables. In
the I band, EF Peg continues to decline in brightness at 0.1
mag/day, and the I superhump peak-to-peak amplitude has declined
from 0.3 to 0.2 mag over the above interval; the maximum-minimum
ratio is 0.3. Secondary 'humps' of amplitude < 0.1 mag in I at
phase 0.6 were observed."
IAUC 5378

TASV 1108+55
Mike Collins points out that this star was incorrectly designated
on E576 both in the header and the e-chart title and should read
as above.

V1251 CYGNI
Taichi Kato, Japan, e-mails that CCD photometry with the Ouda
0.6-m reflector revealed superhumps at 1991 Nov 3.448, 3.524,
3.600UT (amplitude 0.25-0.35 mag in V). The amplitude was only
0.05 mag on Oct 28. The development of superhumps was very slow for
an SU UMa star. This explains the peculiar 'nova-like' appearance
of the light curve.
Additional estimates by Schmeer (cf E576):
Oct 26.833UT, 12.5 (revised); 29.755, 12.6; 31.977, 12.7;
Nov 1.778, 12.8; 3.769, 13.2.
The estimate of Oct 26.89 by Moriyama on E576 should read 26.394.

Guy M Hurst