Exposure
- ID
- GRAVI.2025-04-18T07:34:54.487_2
- Header ID
- GRAVI.2025-04-18T07:34:54.487
- Date updated
- 2025-04-18 07:40:49 UTC+0000
- Release date
- 2026-04-18 07:40:49 UTC+0000
- UTC Start
- 2025-04-18 07:34:54.487
- UTC End
- 2025-04-18 07:37:34.487
- MJD Start
- 60783.31590842
- MJD End
- 60783.31776027186
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0021355
- Ambient temperature (°C)
- 13.04
- Seeing (arcsec)
- 1.43
Observation
- ID
- 66673
- Category
- science
- Program ID
- 115.285X.001
- Program Title
- ORBITAL AND SPECTRAL CHARACTERISATION OF A UNIQUE QUADRUPLE (OR QUINTUPLE?) SYSTEM
- Program Type
- Normal
- PI / COI
- VISWANATH / JANSON / LACOUR / SQUICCIARINI / CHOMEZ / DELORME / LAGRANGE / CHAUVIN / VIGAN
Target
- ID
- 43672
- Name
- HIP_81208
- RA
- 248.80766249999996
- DEC
- -35.724645833333334
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- U1 U2 U3 U4
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 55.6510 | 55.6040 | 26.8000 | 27.1000 |
| U1-U3 | 100.9590 | 100.8600 | 33.2000 | 33.6000 |
| U1-U4 | 129.4910 | 129.3640 | 61.2890 | 61.6780 |
| U2-U3 | 46.0780 | 46.0280 | 41.0000 | 41.3000 |
| U2-U4 | 89.3580 | 89.3170 | 81.9350 | 82.3510 |
| U3-U4 | 62.3640 | 62.3960 | 110.9040 | 111.3120 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 115.285X.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60783.31590842 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.811101 |
| DEC | -35.7246 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | COMBINED |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | U1 |
| HIERARCH ESO ISS CONF STATION2 | U2 |
| HIERARCH ESO ISS CONF STATION3 | U3 |
| HIERARCH ESO ISS CONF STATION4 | U4 |
| EXPTIME | 176.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 10.0 |
| HIERARCH ESO DET2 NDIT | 16 |
| HIERARCH ESO ISS PBL12 START | 55.651 |
| HIERARCH ESO ISS PBL12 END | 55.604 |
| HIERARCH ESO ISS PBLA12 START | 26.8 |
| HIERARCH ESO ISS PBLA12 END | 27.1 |
| HIERARCH ESO ISS PBL13 START | 100.959 |
| HIERARCH ESO ISS PBL13 END | 100.86 |
| HIERARCH ESO ISS PBLA13 START | 33.2 |
| HIERARCH ESO ISS PBLA13 END | 33.6 |
| HIERARCH ESO ISS PBL14 START | 129.491 |
| HIERARCH ESO ISS PBL14 END | 129.364 |
| HIERARCH ESO ISS PBLA14 START | 61.289 |
| HIERARCH ESO ISS PBLA14 END | 61.678 |
| HIERARCH ESO ISS PBL23 START | 46.078 |
| HIERARCH ESO ISS PBL23 END | 46.028 |
| HIERARCH ESO ISS PBLA23 START | 41.0 |
| HIERARCH ESO ISS PBLA23 END | 41.3 |
| HIERARCH ESO ISS PBL24 START | 89.358 |
| HIERARCH ESO ISS PBL24 END | 89.317 |
| HIERARCH ESO ISS PBLA24 START | 81.935 |
| HIERARCH ESO ISS PBLA24 END | 82.351 |
| HIERARCH ESO ISS PBL34 START | 62.364 |
| HIERARCH ESO ISS PBL34 END | 62.396 |
| HIERARCH ESO ISS PBLA34 START | 110.904 |
| HIERARCH ESO ISS PBLA34 END | 111.312 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002381 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00189 |
| HIERARCH ESO ISS AMBI TEMP | 13.04 |
| HIERARCH ESO ISS AMBI FWHM START | 1.41 |
| HIERARCH ESO ISS AMBI FWHM END | 1.45 |
| HIERARCH ESO FT ROBJ NAME | HIP_81208 |
| HIERARCH ESO FT ROBJ ALPHA | 163513.839 |
| HIERARCH ESO FT ROBJ DELTA | -354328.725 |