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[vsnet-obs 1032] Q Cygni Sequence

Sequence Notes re Q Cygni = Nova Cygni 1876

Lasse Jensen, Denmark recently commented via VSNET that
results for Q Cygni (=Nova Cygni 1876) appeared to be
inconsistent and this might be due to different sequences
in use.

The differences between the sequence issued by the AAVSO and
The Astronomer (TA) are very substantial:

TA Label    AAVSO Label   TA mag  AAVSO Mag  Comment
1              94          10.30    9.4      B-V=+0.49
2             110          12.54   11.0      B-V=+0.51
3             119          13.35   11.9      B-V=+0.64
4             134          14.03   13.4      B-V=+0.95
5             not used     14.38   ----      B-V=+0.74
6             not used     14.91   ----      B-V=+1.19
7             138          15.08   13.8      B-V=+0.28
8             not used     15.53   ----      B-V=+1.75 NW of var

The TA sequence reference 871211 is based on Perem.Zvezdy (1983)
Vol 21 p807 S.Yu.Shugarov. They are based on V and B measures.
The author found that Q Cygni had a range of V=14.66-15.30 based
on 50 measures.

My copy of the AAVSO (f) preliminary chart does not appear
to quote the source of their sequence.

This is a very active nova at minimum and within the range of
large amateur telescopes. We recommend close monitoring and
we can send a copy of our chart to anyone who e-mails their
postal address to the undersigned.

Guy M Hurst
Editor, The Astronomer
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Guy M Hurst, 16 Westminster Close, Basingstoke, Hants, RG22 4PP,
England. Tel/FAX:(01256) 471074. International +441256471074
INTERNET:  guy@tahq.demon.co.uk  OR  gmh@uk.ac.rl.star.ast
WWW  http://vsnet.demon.co.uk/astronomer
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