1641+399 (3C 345)
Coordinates
R.A. = 16:42:58.808, Dec. = +39:48:36.99 (2000)
z = 0.5928
Field of view is 8.5’x8.5′
GASP suggested stars: 4 10 12 19
Comparison stars
| Star | U | B | V | R | I |
| 4 | 16.433 (0.040) | 16.044 (0.017) | 15.245 (0.007) | 14.768 (0.006) | 14.337 (0.011) |
| 10 | 13.891 (0.004) | 13.959 (0.012) | 13.773 (0.006) | 13.644 (0.010) | 13.491 (0.011) |
| 12 | 16.143 (0.064) | 16.046 (0.008) | 15.418 (0.007) | 15.040 (0.009) | 14.669 (0.019) |
| 19 | 16.935 (0.177) | 16.452 (0.016) | 15.228 (0.006) | 14.470 (0.006) | 13.806 (0.014) |
from González-Pérez, Kidger & Martín-Luis, 2001, AJ 122, 2055