| The table below gives standard magnitudes measured through B, V, and I filters for the standard stars used to calibrate our images of M10. Each star is indicated by both a letter which corresponds to the markers in the above picture and its Stetson identification number. |
| ID | Stetson ID | B Magnitude | V Magnitude | I Magnitude |
| A | 58 | N/A | 13.558 | 12.073 |
| B | 8 | N/A | 14.262 | 13.441 |
| C | 62 | N/A | 12.600 | 11.009 |
| D | 23 | N/A | 13.900 | 12.659 |
| E | 40 | N/A | 13.197 | 11.719 |
| F | 18 | N/A | 14.029 | 12.668 |