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Table 1
Observation log for optical spectroscopy with TWIN at the Calar Alto 3.5 m telescope and for the XMM-Newton observation.
| Instrument | Filter | Texp | Date | UT-start/end |
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|
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| TWIN | 240 s | 2006-01-22 | 01:28-06:19 | |
| IAC80 | V | 90 s | 2008-11-04 | 03:27-06:34 |
| PN | Thin | 44.4 ks | 2008-11-04 | 07:02-19:23 |
| MOS1 | Thin | 46.0 ks | 2008-11-04 | 06:40-19:27 |
| MOS2 | Thin | 46.0 ks | 2008-11-04 | 06:40-19:27 |
| OM | UVW1 | 21.7 ks | 2008-11-04 | 06:48-13:11 |
| UVM2 | 17.6 ks | 2008-11-04 | 13:16-19:00 | |
Notes. For the optical observations in the firsty two rows the third column lists the exposure times of individual images, otherwise the total exposure time. The orbital period of the binary is 14.5 ks.
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