Exposure
- ID
- GRAVI.2025-04-18T06:58:12.394_2
- Header ID
- GRAVI.2025-04-18T06:58:12.394
- Date updated
- 2025-04-18 07:05:47 UTC+0000
- Release date
- 2026-04-18 07:05:47 UTC+0000
- UTC Start
- 2025-04-18 06:58:12.394
- UTC End
- 2025-04-18 06:59:48.394
- MJD Start
- 60783.29042123
- MJD End
- 60783.29153234111
- Exposure time (s)
- 96.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0025034999999999996
- Ambient temperature (°C)
- 13.14
- Seeing (arcsec)
- 1.2799999999999998
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 | 56.1170 | 56.0990 | 22.5000 | 22.7000 |
| U1-U3 | 101.8920 | 101.8590 | 28.7000 | 29.0000 |
| U1-U4 | 130.2070 | 130.2100 | 56.1000 | 56.3700 |
| U2-U3 | 46.5120 | 46.4980 | 36.3000 | 36.5000 |
| U2-U4 | 89.0840 | 89.1320 | 76.5210 | 76.7970 |
| U3-U4 | 61.4380 | 61.5080 | 105.8080 | 106.0580 |
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 | 60783.29042123 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.810964 |
| DEC | -35.72469 |
| 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 | 114.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 3.0 |
| HIERARCH ESO DET2 NDIT | 32 |
| HIERARCH ESO ISS PBL12 START | 56.117 |
| HIERARCH ESO ISS PBL12 END | 56.099 |
| HIERARCH ESO ISS PBLA12 START | 22.5 |
| HIERARCH ESO ISS PBLA12 END | 22.7 |
| HIERARCH ESO ISS PBL13 START | 101.892 |
| HIERARCH ESO ISS PBL13 END | 101.859 |
| HIERARCH ESO ISS PBLA13 START | 28.7 |
| HIERARCH ESO ISS PBLA13 END | 29.0 |
| HIERARCH ESO ISS PBL14 START | 130.207 |
| HIERARCH ESO ISS PBL14 END | 130.21 |
| HIERARCH ESO ISS PBLA14 START | 56.1 |
| HIERARCH ESO ISS PBLA14 END | 56.37 |
| HIERARCH ESO ISS PBL23 START | 46.512 |
| HIERARCH ESO ISS PBL23 END | 46.498 |
| HIERARCH ESO ISS PBLA23 START | 36.3 |
| HIERARCH ESO ISS PBLA23 END | 36.5 |
| HIERARCH ESO ISS PBL24 START | 89.084 |
| HIERARCH ESO ISS PBL24 END | 89.132 |
| HIERARCH ESO ISS PBLA24 START | 76.521 |
| HIERARCH ESO ISS PBLA24 END | 76.797 |
| HIERARCH ESO ISS PBL34 START | 61.438 |
| HIERARCH ESO ISS PBL34 END | 61.508 |
| HIERARCH ESO ISS PBLA34 START | 105.808 |
| HIERARCH ESO ISS PBLA34 END | 106.058 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002437 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00257 |
| HIERARCH ESO ISS AMBI TEMP | 13.14 |
| HIERARCH ESO ISS AMBI FWHM START | 1.15 |
| HIERARCH ESO ISS AMBI FWHM END | 1.41 |
| HIERARCH ESO FT ROBJ NAME | HIP_81208 |
| HIERARCH ESO FT ROBJ ALPHA | 163513.839 |
| HIERARCH ESO FT ROBJ DELTA | -354328.725 |