3C 454.3 (2251+158)

Coordinates (J2000.0):

R.A.: 22h 53m 57.7s  Dec.:  +16° 08′ 54”

z = 0.859

Field of view is 13.13’x13.13′

GASP suggested stars: 1 2 3 4

Optical photometry of comparison stars

Star \ Band	U	B	V	R	I
1	15.17 (~0.02)	14.70 (0.02)	13.71 (0.02)	13.15 (0.02)	12.545 (0.006)
2	15.94 (~0.02)	14.93 (0.02)	13.80 (0.02)	13.19 (0.02)	12.633 (0.005)
3	15.42 (~0.02)	15.19 (0.02)	14.44 (0.02)	14.00 (0.02)	13.528 (0.004)
4	15.94 (~0.02)	15.91 (0.05)	15.21 (0.02)	14.79 (0.02)	14.300 (0.007)
5	16.71 (~0.08)	16.28 (0.05)	15.30 (0.02)	14.83 (0.02)	14.334 (0.025)
6	16.35 (~0.11)	16.06 (0.05)	15.34 (0.02)	14.83 (0.03)	14.424 (0.017)
7	18.94 (~0.14)	17.00 (0.03)	15.74 (0.02)	14.94 (0.02)	14.204 (0.007)
8	17.39 (~0.05)	16.85 (0.06)	15.94 (0.02)	15.34 (0.02)	14.754 (0.020)

References
Raiteri et al. 1998, A&AS 130, 495   (adopted in BVR)
González-Pérez et al. 2001, AJ 122, 2055   (adopted in I)
Angione 1971, AJ 76, 412   (adopted in U)