[vsnet-j 1532] V2275 Cyg (Nova Cyg 2001-2) sequence

[Taichi Kato <tkato>]

From owner-vsnet-chat@kusastro.kyoto-u.ac.jp Mon Aug 27 15:52 JST 2001
From: "Bruce Sumner" <b.sumner@bom.gov.au>
To: <vsnet-chat@kusastro.kyoto-u.ac.jp>,
        <vsnet-sequence@kusastro.kyoto-u.ac.jp>
Date: Mon, 27 Aug 2001 16:41:48 +1000
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Subject: [vsnet-chat 4766] FW: Sequence for N. Cyg 2001 #2
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Hi everyone,

	Just to keep you all honest, here is the proposed sequence
for the new Nova once it drops below 108. I note Reinder Bouma has
already issued a chart based on Henden photometry. The following
sequence has nine stars in common with Bouma, plus three to fill
gaps and one fainter star. Thanks to Arne for the field photometry.

Bruce Sumner
----------------------------

230  NOVA CYGNI 2001 No. 2   (N)   Range: 6.6 - ?
     Position:   21 03 01.97  +48 45 53.2 (J2000, from .dat file)
     Magnitude:  V=9.137  B-V=0.873       (in .dat file)

ID     RA  (2000)   DEC       X    Y   N    V      ERR     B-V    ERR

a) Comparison star sequence

1    21 03 45.2  +48 48 35   427  161  2  10.846  0.010   0.264  0.006
2    21 03 50.0  +48 43 27   475 -146  2  11.837  0.012   0.473  0.006
3    21 02 45.8  +48 44 42  -161  -71  1  12.393  0.002   0.646  0.004
4    21 03 09.5  +48 40 16    74 -337  2  12.748  0.079   0.937  0.015
5    21 02 55.7  +48 41 35   -62 -258  2  13.128  0.000   0.711  0.012
6    21 02 48.4  +48 48 15  -135  142  2  13.497  0.008   0.752  0.006
7    21 03 14.5  +48 48 24   123  151  2  13.841  0.008   0.771  0.007
8    21 03 04.8  +48 40 12    28 -341  2  14.146  0.010   0.655  0.003
9    21 03 00.8  +48 46 31   -12   38  2  14.402  0.000   0.673  0.001
10   21 02 59.2  +48 43 27   -28 -146  2  14.688  0.023   0.969  0.011
11   21 03 08.6  +48 43 20    65 -153  2  15.063  0.015   0.716  0.025
12   21 03 04.7  +48 45 53    26   -1  2  15.514  0.036   0.885  0.040
13   21 03 02.0  +48 46 11     0   18  2  15.831  0.008   0.928  0.056
14   21 03 04.3  +48 43 27    23 -146  2  16.222  0.014   0.990  0.030

b) Wide-colour extension for CCD calibration

     21 03 52.1  +48 48 26   495  153  2  13.246  0.006   0.498  0.001
     21 02 50.4  +48 44 24  -115  -89  2  12.736  0.000   1.645  0.009
     21 03 22.9  +48 45 36   207  -17  2  13.204  0.000   2.026  0.003

Notes:

1.	Nine stars of this sequence are common with the sequence chosen by
Bouma and shown on his 15x 15chart for the nova dated 25/08/2001.

Bruce Sumner
27 August 2001