[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

[vsnet-obs 2963] Fading of V705 Cas


Fading of V705 Cas (Nova Cassiopeiae 1993)

Observations by Dutch amateurs over the last 9 month or so
clearly show that V705 Cas is slowly fading from its secondary
maximum near magnitude 12.1 that lasted for almost a year,
roughly from mid 1994 till mid 1995. We have summarized our
observations since September 1 1995 in the table below.
We have been puzzled by some recent observations published in
the VSNET-observations, that have V705 Cas still as bright as
magnitude 12.3, while our last observations of June 15.0 were
near magnitude 13.4. We suspect that the recent magnitude
12.3-12.5 observations are NOT of V705 Cas, but of nearby GSC
4008.1363, listed as magnitude 13.05 (+/- 0.40), but that one
of us (BMU) estimated at about 12.5 on June 15.0. This star is
easily identified as the brightest of a small triangle SSW of
V705, if the field is viewed under sufficient magnification.
Therefore, we suggest that observers take extra care when
making future observations. We welcome your comments on this
issue.

Observations of V705 Cas:

Date        Mag   code

950901.82   12.4  BMU
950902.95   12.3  BMU
950905.95   12.3  FJH
950917.86   12.3  BMU
950917.93   12.3  FJH
950920.85   12.4  BMU
950928.82   12.4  BMU
951001.86   12.3  FJH
951005.78   12.5  BMU
951018.77   12.3  FJH
951020.78   12.4  BMU
951021.79   12.4  BMU
951023.75   12.6  CMG
951023.78   12.4  BMU
951024.76   12.4  BMU
951025.77   12.5  BMU
951025.99   12.4  FJH
951028.19   12.5  BMU
951029.76   12.4  BMU
951030.75   12.4  BMU
951030.95   12.5  FJH
951102.17   12.4  BMU
951113.77   12.3  BMU
951113.78   12.6  FJH
951119.84   12.6  FJH
951120.76   12.4  BMU
951125.77   12.3  BMU
951125.95   12.7  FJH
951126.74   12.4  BMU
951214.96   12.6  FJH
951215.73   12.4  BMU
951220.93   12.7  FJH
951224.78   12.5  BMU
951228.94   12.5  CMG
960105.83   12.8  FJH
960108.78   12.6  BMU
960115.77   12.9  FJH
960122.77   12.8  FJH
960123.74   12.5  CMG
960201.77   12.9  FJH
960206.76   12.9  FJH
960307.79   12.9  CMG
960308.85   13.2  BMU
960309.82   13.1  BMU
960310.83   12.9  CMG
960420.08   13.4  BMU
960505.89   13.5  BMU
960612.98   13.5  BMU
960614.96   13.4  BMU
960515.03   13.4  FJH
960615.0    13.4  CMG

Comparison stars: 118, 125, 131 and 133 of AAVSO-chart 2/94
(PEP(V) of Lowell Obs.). NOTE: Visually the sequence looks
better if 131 and 133 were reversed. They were used as given
on the chart, however.

Observers:
BMU - R.J. Bouma, Groningen, The Netherlands, 25.4cm Jones-
Bird Reflector.
CMG - Georg Comello, Roden, The Netherlands, 28cm SC.
FJH - Henk Feijth, Goutum, The Netherlands, 30.5cm Refector.

--------------------------------------------------------
Reinder J. Bouma          email: rjbouma@pi.net
Bekemaheerd 77            phone: +31 (0)50-5418227
9737PR  Groningen
Netherlands
--------------------------------------------------------