The Landolt (1992) UBVRI photometric standard stars list features several fields which contain multiple standard stars, allowing standards over a range of colors to be measured in a single exposure. The following table lists several of these useful ``bonus fields''. A starlist containing these targets is also available as /kroot/starlists/0000_lris_bonus_fields.
| Field Name | RA (2000) |
Dec (2000) |
N* | (B-V) Range | |
|---|---|---|---|---|---|
| Min | Max | ||||
| PG0918+029 field | 09:21:31 | +02:47:02 | 5 | -0.271 | +1.044 |
| PG1047+003 field | 10:50:12 | -00:01:08 | 4 | -0.290 | +0.688 |
| L107-459 field | 15:38:46 | -00:22:20 | 4 | +0.792 | +1.214 |
| PG1633+099 field | 16:35:34 | +09:46:17 | 5 | -0.192 | +1.134 |
| L109-954 field | 17:44:15 | -00:02:17 | 3 | +0.806 | +1.283 |
| L110-504 field | 18:43:11 | +00:29:00 | 8 | +0.568 | +2.326 |