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THE ASTRONOMER Electronic Circular No 2943      2013 Aug 16 14.12UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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NOVA DELPHINI 2013
Further to the note on E-Circular 2942, recent observations suggest the
object is still brightening since discovery.
Recent visual estimates:
2013 Aug 15.00UT, 6.1 (Bjorn Granslo, clouds, 10x50B)
2013 Aug 15.48UT, 5.6 (Paul Camilleri, 20x80B)
2013 Aug 15.91UT, 5.4 (Guy Hurst, 15x80B thin cloud)

The AAVSO 15 deg chart can be obtained from this link:
http://www.aavso.org/tmp3/d25315.png

There was also a chart included in TA Early Warning Circular 198 issued on
August 15, a copy of which can be e-mailed on request to the editor.

T. Tomov et. al, institute of Astronomy and NAO, Sofia, Bulgaria report on
The Astronomer's Telegram 5288 optical BV photometry and spectroscopy
obtained between 2013 August 14.88UT-15.08UT. 
Using a 0.60-m Cassegrain telescope at the Nicolaus Copernicus University
Observatory (Torun, Poland) they estimated the V brightness of the nova to
be 6.31+/-0.02 mag and 6.18+/-0.03 mag on Aug. 14.94 UT and Aug. 15.02 UT
respectively. The (B-V) colour of the nova was 0.19 and 0.21 mag
respectively, showing a reddening of ~0.02 mag in about two hours. 

Spectral observations were performed in the 4400-7000 AA range using the
echelle spectrograph (R~11000) attached to the 60/90 cm Schmidt-Cassegrain
telescope (Torun, Poland) and in regions covering ~200 A around Halpha,
Hbeta and NaI (R~16000) using the Coude spectrograph of the 2 m RCC
telescope at the Rozhen Observatory (Rozhen, Bulgaria). 

The strongest features of the spectrum are the Balmer lines demonstrating P
Cyg profiles. The Halpha emission shows a flat top. The radial velocity
measured at the minima of the P Cyg absorptions is about -1600 km/sec.

SUPERNOVA 2013eh (THU-NAOC TRANSIENT SURVEY)
2013eh  Jly 19.19   16 16 09.19  +38 32 53.0  16.6   4.7"W    8.0"N
Dave Balam, Dominion Astrophysical Observatory, National Research Council of
Canada et. al., report a spectrum of July 21 shows a type-Ia supernova one
week before maximum.

SUPERNOVA 2013ei IN NGC 7068 (ASAS-SN)
2013ei  Jun 26.47   21 26 31.93  +12 10 49.4  16.0  14  "W    6  "S
Villanueva: spectrum June 29 type-Ia supernova around maximum.

SUPERNOVA 2013ek IN NGC 6984 (STUART PARKER)
2013ek  Jly 24.45   20 57 53.90  -51 52 24.5  16.9R  1  "W   10  "S 
Parker noted the closeness of this variable to the position of SN 2012im.
D. Milisavljevic: spectrum July 25 young type-Ib/c supernova

SUPERNOVA 2013el IN NGC 1285 (STUART PARKER)
2013el  Jly 11.79   03 17 52.45  -07 18 02.1  15.5R 14  "W   10  "S 
S. Valenti: spectrum July 13 type-Ib 

Guy M Hurst