Exposure
- ID
- GRAVI.2025-04-18T07:31:39.479_2
- Header ID
- GRAVI.2025-04-18T07:31:39.479
- 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 07:31:39.479
- UTC End
- 2025-04-18 07:34:19.479
- MJD Start
- 60783.31365138
- MJD End
- 60783.315503231854
- Exposure time (s)
- 160.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0030025
- Ambient temperature (°C)
- 13.29
- Seeing (arcsec)
- 1.26
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 | 55.7030 | 55.6570 | 26.4000 | 26.8000 |
| U1-U3 | 101.0650 | 100.9710 | 32.8000 | 33.2000 |
| U1-U4 | 129.6220 | 129.5070 | 60.8470 | 61.2380 |
| U2-U3 | 46.1300 | 46.0840 | 40.6000 | 40.9000 |
| U2-U4 | 89.3930 | 89.3620 | 81.4640 | 81.8810 |
| U3-U4 | 62.3210 | 62.3600 | 110.4450 | 110.8510 |
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 | 60783.31365138 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HIP 81208 |
| HIERARCH ESO INS SOBJ NAME | HIP_81208B |
| RA | 248.811073 |
| DEC | -35.72462 |
| 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 | 55.703 |
| HIERARCH ESO ISS PBL12 END | 55.657 |
| HIERARCH ESO ISS PBLA12 START | 26.4 |
| HIERARCH ESO ISS PBLA12 END | 26.8 |
| HIERARCH ESO ISS PBL13 START | 101.065 |
| HIERARCH ESO ISS PBL13 END | 100.971 |
| HIERARCH ESO ISS PBLA13 START | 32.8 |
| HIERARCH ESO ISS PBLA13 END | 33.2 |
| HIERARCH ESO ISS PBL14 START | 129.622 |
| HIERARCH ESO ISS PBL14 END | 129.507 |
| HIERARCH ESO ISS PBLA14 START | 60.847 |
| HIERARCH ESO ISS PBLA14 END | 61.238 |
| HIERARCH ESO ISS PBL23 START | 46.13 |
| HIERARCH ESO ISS PBL23 END | 46.084 |
| HIERARCH ESO ISS PBLA23 START | 40.6 |
| HIERARCH ESO ISS PBLA23 END | 40.9 |
| HIERARCH ESO ISS PBL24 START | 89.393 |
| HIERARCH ESO ISS PBL24 END | 89.362 |
| HIERARCH ESO ISS PBLA24 START | 81.464 |
| HIERARCH ESO ISS PBLA24 END | 81.881 |
| HIERARCH ESO ISS PBL34 START | 62.321 |
| HIERARCH ESO ISS PBL34 END | 62.36 |
| HIERARCH ESO ISS PBLA34 START | 110.445 |
| HIERARCH ESO ISS PBLA34 END | 110.851 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003624 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002381 |
| HIERARCH ESO ISS AMBI TEMP | 13.29 |
| HIERARCH ESO ISS AMBI FWHM START | 1.11 |
| 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 |