Coordinates (J2000)
R.A.: 17 25 04.4, Dec.:
+11 52 16
z = 0.018

Comparison stars
| star | B | V | R | I | B-V | V-R | V-I | |
| C1 | 13.77 (0.10) | 11.98 (0.05) | 10.94 (0.05) | 9.75 (0.05) | 1.79 | 1.04 | 2.23 | |
| C2 | 14.16 (0.10) | 13.21 (0.05) | 12.62 (0.05) | 12.10 (0.05) | 0.95 | 0.59 | 1.11 | |
| C3 | 14.82 (0.12) | 14.10 (0.05) | 13.63 (0.05) | 13.18 (0.05) | 0.72 | 0.47 | 0.92 | |
| C4 | 15.74 (0.08) | 15.14 (0.08) | 14.70 (0.07) | 0.6 | 1.04 |
Field of view is 15'x15'