Exposure
- ID
- GRAVI.2025-04-18T07:21:48.455_2
- Header ID
- GRAVI.2025-04-18T07:21:48.455
- Date updated
- 2025-04-18 07:30:47 UTC+0000
- Release date
- 2026-04-18 07:30:47 UTC+0000
- UTC Start
- 2025-04-18 07:21:48.455
- UTC End
- 2025-04-18 07:24:28.455
- MJD Start
- 60783.30681082
- MJD End
- 60783.30866267186
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002652
- Ambient temperature (°C)
- 13.16
- Seeing (arcsec)
- 1.2000000000000002
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 | 55.8460 | 55.8060 | 25.3000 | 25.6000 |
| U1-U3 | 101.3590 | 101.2780 | 31.7000 | 32.0000 |
| U1-U4 | 129.9370 | 129.8570 | 59.4810 | 59.8850 |
| U2-U3 | 46.2730 | 46.2340 | 39.3000 | 39.7000 |
| U2-U4 | 89.4270 | 89.4280 | 80.0220 | 80.4470 |
| U3-U4 | 62.1450 | 62.2040 | 109.0580 | 109.4630 |
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 | 60783.30681082 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.810987 |
| DEC | -35.72467 |
| 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 | 55.846 |
| HIERARCH ESO ISS PBL12 END | 55.806 |
| HIERARCH ESO ISS PBLA12 START | 25.3 |
| HIERARCH ESO ISS PBLA12 END | 25.6 |
| HIERARCH ESO ISS PBL13 START | 101.359 |
| HIERARCH ESO ISS PBL13 END | 101.278 |
| HIERARCH ESO ISS PBLA13 START | 31.7 |
| HIERARCH ESO ISS PBLA13 END | 32.0 |
| HIERARCH ESO ISS PBL14 START | 129.937 |
| HIERARCH ESO ISS PBL14 END | 129.857 |
| HIERARCH ESO ISS PBLA14 START | 59.481 |
| HIERARCH ESO ISS PBLA14 END | 59.885 |
| HIERARCH ESO ISS PBL23 START | 46.273 |
| HIERARCH ESO ISS PBL23 END | 46.234 |
| HIERARCH ESO ISS PBLA23 START | 39.3 |
| HIERARCH ESO ISS PBLA23 END | 39.7 |
| HIERARCH ESO ISS PBL24 START | 89.427 |
| HIERARCH ESO ISS PBL24 END | 89.428 |
| HIERARCH ESO ISS PBLA24 START | 80.022 |
| HIERARCH ESO ISS PBLA24 END | 80.447 |
| HIERARCH ESO ISS PBL34 START | 62.145 |
| HIERARCH ESO ISS PBL34 END | 62.204 |
| HIERARCH ESO ISS PBLA34 START | 109.058 |
| HIERARCH ESO ISS PBLA34 END | 109.463 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003051 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002253 |
| HIERARCH ESO ISS AMBI TEMP | 13.16 |
| HIERARCH ESO ISS AMBI FWHM START | 1.09 |
| HIERARCH ESO ISS AMBI FWHM END | 1.31 |
| HIERARCH ESO FT ROBJ NAME | HIP_81208 |
| HIERARCH ESO FT ROBJ ALPHA | 163513.839 |
| HIERARCH ESO FT ROBJ DELTA | -354328.725 |