3C 345 = 1641+399
DSS image: 15 x 15 arcmin
R.A. (J2000.0)= 16 42 58.8
Dec. (J2000.0)= +39 48 37
Recommended standard stars
| Star | B | Err B | V | Err V | R | Err R | I | Err I |
|---|---|---|---|---|---|---|---|---|
| 1 | 16.044 | 0.017 | 15.245 | 0.007 | 14.768 | 0.006 | 14.337 | 0.011 |
| 2 | 16.452 | 0.016 | 15.228 | 0.006 | 14.470 | 0.006 | 13.806 | 0.014 |