195  V445 PUPPIS    (N)   Range: 8.6-13.6B
     Position:   07 37 56.88  -25 56 58.9  (J2000, Henden)
     Magnitude:  V= 9.455  B-V=0.549       (Henden, from .dat file)
                                                            
ID     RA  (2000)   DEC       X    Y   N    V      ERR     B-V    ERR 

a) Comparison star sequence

1    07 37 55.9  -25 59 38   -14 -159  3   8.732  0.014   0.343  0.001   
2    07 37 59.0  -25 52 03    28  296  3   9.691  0.020   0.770  0.007   
3    07 38 02.8  -26 00 47    79 -228  3   9.911  0.013  -0.038  0.007   
4    07 37 58.8  -25 57 48    26  -49  3  10.403  0.020   0.114  0.016   
5    07 37 51.9  -25 55 54   -67   65  3  11.563  0.018   0.558  0.013   
6    07 38 23.1  -25 52 30   354  269  3  12.096  0.005   0.228  0.002   
7    07 38 18.8  -25 56 41   295   18  3  12.374  0.012   0.582  0.016   
8    07 38 14.9  -26 01 10   243 -251  3  12.845  0.016   1.128  0.019   
9    07 37 42.4  -25 53 36  -196  203  3  13.021  0.017   0.480  0.011   
10   07 37 59.9  -25 57 13    40  -14  3  13.369  0.019   0.617  0.012   
11   07 38 00.8  -25 56 14    53   45  3  13.854  0.009   1.570  0.015   
12   07 37 52.3  -25 58 32   -61  -93  3  14.082  0.016   0.339  0.025   
13   07 38 02.5  -25 57 43    76  -44  3  14.624  0.016   0.528  0.009   


b) Wide-colour extension for CCD calibration

     07 37 42.1  -26 00 36  -199 -217  3  12.952  0.019   0.271  0.013   
     07 37 48.0  -26 01 50  -120 -291  3  14.456  0.017   1.770  0.055   


Notes:

1. This sequence is derived from very short exposures, and thus even the
bright magnitudes can be considered reliable. This is confirmed by the 
fact that Tycho-2 magnitudes of these bright stars are almost identical 
to the values determined here.

2. Arne Henden notes that the UCAC1 star

                RA   (J2000)  DEC         mag
             07 37 56.882  -25 56 58.85  13.60

is identical with the nova within error (less than 100mas).


Bruce Sumner
3 January 2001
Revised 1 March 2001