Exposure
- ID
- GRAVI.2025-04-18T07:12:39.431_2
- Header ID
- GRAVI.2025-04-18T07:12:39.431
- Date updated
- 2025-04-18 07:25:41 UTC+0000
- Release date
- 2026-04-18 07:25:41 UTC+0000
- UTC Start
- 2025-04-18 07:12:39.431
- UTC End
- 2025-04-18 07:15:19.431
- MJD Start
- 60783.30045638
- MJD End
- 60783.302308231854
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0022570000000000003
- Ambient temperature (°C)
- 13.01
- Seeing (arcsec)
- 1.45
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 | 55.9620 | 55.9270 | 24.2000 | 24.6000 |
| U1-U3 | 101.5920 | 101.5230 | 30.5000 | 30.9000 |
| U1-U4 | 130.1200 | 130.0740 | 58.1960 | 58.6030 |
| U2-U3 | 46.3820 | 46.3500 | 38.2000 | 38.5000 |
| U2-U4 | 89.3650 | 89.3950 | 78.6810 | 79.1050 |
| U3-U4 | 61.9200 | 61.9970 | 107.7930 | 108.1900 |
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 | 60783.30045638 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.810989 |
| DEC | -35.72468 |
| 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 | 55.962 |
| HIERARCH ESO ISS PBL12 END | 55.927 |
| HIERARCH ESO ISS PBLA12 START | 24.2 |
| HIERARCH ESO ISS PBLA12 END | 24.6 |
| HIERARCH ESO ISS PBL13 START | 101.592 |
| HIERARCH ESO ISS PBL13 END | 101.523 |
| HIERARCH ESO ISS PBLA13 START | 30.5 |
| HIERARCH ESO ISS PBLA13 END | 30.9 |
| HIERARCH ESO ISS PBL14 START | 130.12 |
| HIERARCH ESO ISS PBL14 END | 130.074 |
| HIERARCH ESO ISS PBLA14 START | 58.196 |
| HIERARCH ESO ISS PBLA14 END | 58.603 |
| HIERARCH ESO ISS PBL23 START | 46.382 |
| HIERARCH ESO ISS PBL23 END | 46.35 |
| HIERARCH ESO ISS PBLA23 START | 38.2 |
| HIERARCH ESO ISS PBLA23 END | 38.5 |
| HIERARCH ESO ISS PBL24 START | 89.365 |
| HIERARCH ESO ISS PBL24 END | 89.395 |
| HIERARCH ESO ISS PBLA24 START | 78.681 |
| HIERARCH ESO ISS PBLA24 END | 79.105 |
| HIERARCH ESO ISS PBL34 START | 61.92 |
| HIERARCH ESO ISS PBL34 END | 61.997 |
| HIERARCH ESO ISS PBLA34 START | 107.793 |
| HIERARCH ESO ISS PBLA34 END | 108.19 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002269 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002245 |
| HIERARCH ESO ISS AMBI TEMP | 13.01 |
| HIERARCH ESO ISS AMBI FWHM START | 1.42 |
| HIERARCH ESO ISS AMBI FWHM END | 1.48 |
| HIERARCH ESO FT ROBJ NAME | HIP_81208 |
| HIERARCH ESO FT ROBJ ALPHA | 163513.839 |
| HIERARCH ESO FT ROBJ DELTA | -354328.725 |