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Table 1.
Temperatures from temperature-color calibrations.
| Target | B − V | V − I | V − K | V − J | V − H | Avg |
|---|---|---|---|---|---|---|
| NGC6819 | 4749 | – | 4685 | 4659 | 4698 | 4698 ± 33 |
| M67 | 4643 | 4736 | 4697 | 4763 | 4749 | 4718 ± 43 |
| NGC188 | 4650 | 4610 | 4618 | 4651 | 4656 | 4637 ± 19 |
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