BL Lacertae = 2200+420
DSS image: 15 x 15 arcmin
R.A. (J2000.0)= 22 02 43.3
Dec. (J2000.0)= +42 16 40
Recommended standard stars
| Star | B | Err B | V | Err V | R | Err R | I | Err I |
|---|---|---|---|---|---|---|---|---|
| 1 | 14.68 | 0.04 | 12.90 | 0.04 | 11.99 | 0.04 | 11.12 | 0.05 |
| 2 | 15.20 | 0.05 | 14.26 | 0.06 | 13.79 | 0.05 | 13.32 | 0.05 |
| 3 | 15.81 | 0.06 | 14.40 | 0.06 | 13.73 | 0.06 | 13.07 | 0.06 |