Table 1
Observed sample of unidentified sources from the 1FHL catalogue.
| Number | USNO designator | RA(J2000) | Dec(J2000) | Observatory | UT date | Time | Total exp. |
| X-ray association | [mm/dd/yy] | [mid. exp.] | [s] | ||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
|
|
|||||||
| 1 | U0750-00173701 |
|
|
NOT | 10/13/2015 | 02:46:41 | 1200 |
| 1RXS J004349.3-111612 | |||||||
|
|
|||||||
| 2 | U0975-00792795 |
|
|
NOT | 10/13/2015 | 04:59:08 | 1200 |
| 1SXPS J033829.0+130213 | |||||||
|
|
|||||||
| 3 | U0675-01653184 |
|
|
NOT | 10/13/2015 | 05:35:13 | 1200 |
| 1SXPS J043949.5-190102 | |||||||
|
|
|||||||
| 4 | U0750-02519189 |
|
|
NOT | 10/13/2015 | 06:08:22 | 1200 |
| 1SXPS J064007.1-125313 | |||||||
|
|
|||||||
| 5 | U0875-0218538 |
|
|
NOT | 10/14/2015 | 04:53:16 | 1200 |
| 1SXPS J074627.1-022550 | |||||||
|
|
|||||||
| 6 | U0825-05946383 |
|
|
LOI | 03/10/2015 | 21:21:16 | 3600 |
| 1RXS J080458.3-062432 | |||||||
|
|
|||||||
| 7 | U0825-05946383 |
|
|
SPM | 01/14/2016 | 12:31:40 | 1800 |
| SWXRT J111515.3-070126 | |||||||
|
|
|||||||
| 8 | U0750-08080787 |
|
|
LOI | 03/13/2015 | 00:57:54 | 3600 |
| 1SXPS J131553.0-073301 | |||||||
|
|
|||||||
| 9 | U1575-03416792 |
|
|
TNG | 08/26/2015 | 22:36:36 | 2400 |
| 1SXPS J141045.3+740508 | |||||||
|
|
|||||||
| 10 | U1575-03416943 |
|
|
TNG | 08/26/2015 | 23:40:59 | 1200 |
| 1SXPS J141051.3+740410 | |||||||
|
|
|||||||
| 11 | U0600-17715078 |
|
|
TNG | 08/27/2015 | 22:41:45 | 2000 |
| 1RXS J151213.1-225515 | |||||||
|
|
|||||||
| 12 | U0825-08948904 |
|
|
TNG | 08/27/2015 | 23:30:37 | 2400 |
| 1SXPS J154952.1-065908 | |||||||
|
|
|||||||
| 13 | U1125-10089754 |
|
|
TNG | 08/27/2015 | 00:24:02 | 1600 |
| 1RXS J184121.8+290932 | |||||||
|
|
|||||||
| 14 | U1530-0317394 |
|
|
TNG | 08/29/2015 | 00:03:54 | 3600 |
| 1RXS J200245.4+630226 | |||||||
Notes. We report the name in the USNO and X-rays catalogues in Col. 2, in Cols. 3 and 4 coordinates referring to J2000.0 for each optical target, in Col. 5 the observatory, in Col. 6 the date of observation, in Col. 7 the UT time at mid exposure, and in Col. 8 the total exposure time in seconds for each of the optical pointings.
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