Comparison star sequence for DH Aql To help observers during the current superoutburst of this object, here is the comparison star sequence for this variable. This is one of the sequences I have derived from Arne's photometry. Further sequence are at: http://ftp.nofs.navy.mil/pub/outgoing/aah/sequence/sumner 54. DH AQUILAE (UGSU) Range: 12.4-18.3V Position: 19 26 10.84 -10 15 29.6 (J2000 - from .dat file) Magnitude in .dat file: V=18.279 B-V=0.256 ID RA (2000) DEC X Y N V ERR B-V ERR 1 19 26 21.1 -10 14 53 151 37 3 12.343 0.021 1.400 0.028 2 19 26 12.3 -10 15 23 21 7 3 12.718 0.005 0.546 0.010 3 19 26 08.1 -10 12 33 -42 177 3 13.223 0.009 0.638 0.012 4 19 26 17.3 -10 16 16 95 -46 3 13.394 0.006 1.325 0.005 5 19 26 15.0 -10 12 48 60 162 3 13.808 0.009 0.725 0.009 6 19 26 08.7 -10 16 33 -33 -63 3 14.302 0.009 1.410 0.002 7 19 26 07.3 -10 14 40 -53 50 3 14.834 0.005 1.082 0.008 8 19 26 06.1 -10 15 29 -72 1 3 15.296 0.009 0.769 0.003 9 19 26 12.6 -10 15 15 26 15 3 15.425 0.132 0.769 0.022 10 19 26 12.8 -10 15 38 29 -8 3 15.481 0.014 1.036 0.015 11 19 26 06.6 -10 16 07 -64 -37 3 15.837 0.024 1.202 0.010 12 19 26 07.7 -10 15 25 -47 5 3 16.043 0.021 1.274 0.002 13 19 26 10.1 -10 15 07 -11 23 3 16.671 0.020 1.143 0.020 14 19 26 12.3 -10 16 02 21 -32 3 16.982 0.013 0.868 0.045 X and Y offsets are in arcsecs, positive north and positive east respectively. The magnitude of 9 is contaminated by 2, and it would be best to avoid using it as a comparison star if possible. Regards, Bruce Sumner