Specifications

58 AUTOSTAR CCD PHOTOMETRY
Figure C-3. M67 Finder Chart for Star Identifications.
BVRI Standard Magnitudes in M67
Table C-2 lists the BVRI standard magnitudes of the stars in M67
to be used for the calibration.
Table C-2. M67 BVRI Standard Magnitudes.
Star B V B–V R V–R I R–I V–I
081
9.944 10.024 –0.080 10.064 –0.040 10.092 –0.028 –0.068
108
11.081 9.711 1.370 10.064 0.707 8.360 0.644 1.351
117
13.409 12.625 0.784 12.159 0.466 11.721 0.438 0.904
124
12.576 12.119 0.457 11.839 0.280 11.561 0.278 0.558
127
13.328 12.776 0.552 12.454 0.322 12.126 0.328 0.650
130
13.342 12.894 0.448 12.611 0.283 12.319 0.292 0.575
134
12.842 12.262 0.580 11.928 0.334 11.603 0.325 0.659
135
12.505 11.445 1.060 10.889 0.556 10.390 0.499 1.055