Exposure
- ID
- GRAVI.2025-04-18T07:02:54.406_2
- Header ID
- GRAVI.2025-04-18T07:02:54.406
- Date updated
- 2025-04-18 07:15:39 UTC+0000
- Release date
- 2026-04-18 07:15:39 UTC+0000
- UTC Start
- 2025-04-18 07:02:54.406
- UTC End
- 2025-04-18 07:05:34.406
- MJD Start
- 60783.29368526
- MJD End
- 60783.29553711186
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002521
- Ambient temperature (°C)
- 13.07
- 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 | 56.0700 | 56.0400 | 23.0000 | 23.4000 |
| U1-U3 | 101.8040 | 101.7450 | 29.3000 | 29.7000 |
| U1-U4 | 130.2060 | 130.1920 | 56.7890 | 57.2100 |
| U2-U3 | 46.4750 | 46.4500 | 36.9000 | 37.3000 |
| U2-U4 | 89.2000 | 89.2590 | 77.2270 | 77.6610 |
| U3-U4 | 61.6120 | 61.7110 | 106.4500 | 106.8480 |
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 | 60783.29368526 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.810959 |
| DEC | -35.72472 |
| 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 | 56.07 |
| HIERARCH ESO ISS PBL12 END | 56.04 |
| HIERARCH ESO ISS PBLA12 START | 23.0 |
| HIERARCH ESO ISS PBLA12 END | 23.4 |
| HIERARCH ESO ISS PBL13 START | 101.804 |
| HIERARCH ESO ISS PBL13 END | 101.745 |
| HIERARCH ESO ISS PBLA13 START | 29.3 |
| HIERARCH ESO ISS PBLA13 END | 29.7 |
| HIERARCH ESO ISS PBL14 START | 130.206 |
| HIERARCH ESO ISS PBL14 END | 130.192 |
| HIERARCH ESO ISS PBLA14 START | 56.789 |
| HIERARCH ESO ISS PBLA14 END | 57.21 |
| HIERARCH ESO ISS PBL23 START | 46.475 |
| HIERARCH ESO ISS PBL23 END | 46.45 |
| HIERARCH ESO ISS PBLA23 START | 36.9 |
| HIERARCH ESO ISS PBLA23 END | 37.3 |
| HIERARCH ESO ISS PBL24 START | 89.2 |
| HIERARCH ESO ISS PBL24 END | 89.259 |
| HIERARCH ESO ISS PBLA24 START | 77.227 |
| HIERARCH ESO ISS PBLA24 END | 77.661 |
| HIERARCH ESO ISS PBL34 START | 61.612 |
| HIERARCH ESO ISS PBL34 END | 61.711 |
| HIERARCH ESO ISS PBLA34 START | 106.45 |
| HIERARCH ESO ISS PBLA34 END | 106.848 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002108 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002934 |
| HIERARCH ESO ISS AMBI TEMP | 13.07 |
| HIERARCH ESO ISS AMBI FWHM START | 1.37 |
| HIERARCH ESO ISS AMBI FWHM END | 1.03 |
| HIERARCH ESO FT ROBJ NAME | HIP_81208 |
| HIERARCH ESO FT ROBJ ALPHA | 163513.839 |
| HIERARCH ESO FT ROBJ DELTA | -354328.725 |