Exposure
- ID
- GRAVI.2023-07-21T07:32:46.223_2
- Header ID
- GRAVI.2023-07-21T07:32:46.223
- Date updated
- 2023-07-21 07:51:10 UTC+0000
- Release date
- 2024-07-21 07:51:10 UTC+0000
- UTC Start
- 2023-07-21 07:32:46.223
- UTC End
- 2023-07-21 07:39:26.223
- MJD Start
- 60146.31442388
- MJD End
- 60146.31905350963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0046095
- Ambient temperature (°C)
- 15.82
- Seeing (arcsec)
- 0.39
Observation
- ID
- 56338
- Category
- science
- Program ID
- 109.238N.003
- Program Title
- UNCOVERING THE DYNAMICAL HISTORY OF BROWN DWARF COMPANIONS
- Program Type
- Monitoring
- PI / COI
- WANG/ LACOUR/ NOWAK/ MAIRE/ GIRARD/ PALADINI/ CORREIA/ VIGAN/ ZURLO/ LAGRANGE/ BLUNT/ HAUBOIS/ GARCIA LOPEZ/ DE ZEEUW/ HENNING/ NIELSEN/ BENISTY/ LANGLOIS/ RAMEAU/ HINKLEY/ OTTEN/ STOLKER/ KAMMERER/ MUZIC/ BOWLER/ PUEYO/ EISENHAUER/ KREIDBERG/ ...
Target
- ID
- 41739
- Name
- HD_4747
- RA
- 12.361504166666665
- DEC
- -23.2124625
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 G1 J2 K0
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 81.3420 | 82.3780 | 105.9000 | 106.4000 |
| A0-J2 | 113.7140 | 115.3640 | 79.9000 | 80.8000 |
| A0-K0 | 114.9590 | 116.2330 | 55.5080 | 56.6160 |
| G1-J2 | 54.0270 | 54.4030 | 38.6000 | 39.8000 |
| G1-K0 | 88.9560 | 89.0450 | 10.7070 | 11.6780 |
| J2-K0 | 48.3750 | 48.4230 | 339.1600 | 339.6900 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 109.238N.003 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60146.31442388 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 4747 |
| HIERARCH ESO INS SOBJ NAME | HD4747B |
| RA | 12.362051 |
| DEC | -23.21181 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | COMBINED |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | A0 |
| HIERARCH ESO ISS CONF STATION2 | G1 |
| HIERARCH ESO ISS CONF STATION3 | J2 |
| HIERARCH ESO ISS CONF STATION4 | K0 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 81.342 |
| HIERARCH ESO ISS PBL12 END | 82.378 |
| HIERARCH ESO ISS PBLA12 START | 105.9 |
| HIERARCH ESO ISS PBLA12 END | 106.4 |
| HIERARCH ESO ISS PBL13 START | 113.714 |
| HIERARCH ESO ISS PBL13 END | 115.364 |
| HIERARCH ESO ISS PBLA13 START | 79.9 |
| HIERARCH ESO ISS PBLA13 END | 80.8 |
| HIERARCH ESO ISS PBL14 START | 114.959 |
| HIERARCH ESO ISS PBL14 END | 116.233 |
| HIERARCH ESO ISS PBLA14 START | 55.508 |
| HIERARCH ESO ISS PBLA14 END | 56.616 |
| HIERARCH ESO ISS PBL23 START | 54.027 |
| HIERARCH ESO ISS PBL23 END | 54.403 |
| HIERARCH ESO ISS PBLA23 START | 38.6 |
| HIERARCH ESO ISS PBLA23 END | 39.8 |
| HIERARCH ESO ISS PBL24 START | 88.956 |
| HIERARCH ESO ISS PBL24 END | 89.045 |
| HIERARCH ESO ISS PBLA24 START | 10.707 |
| HIERARCH ESO ISS PBLA24 END | 11.678 |
| HIERARCH ESO ISS PBL34 START | 48.375 |
| HIERARCH ESO ISS PBL34 END | 48.423 |
| HIERARCH ESO ISS PBLA34 START | 339.16 |
| HIERARCH ESO ISS PBLA34 END | 339.69 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004397 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004822 |
| HIERARCH ESO ISS AMBI TEMP | 15.82 |
| HIERARCH ESO ISS AMBI FWHM START | 0.4 |
| HIERARCH ESO ISS AMBI FWHM END | 0.38 |
| HIERARCH ESO FT ROBJ NAME | HD_4747 |
| HIERARCH ESO FT ROBJ ALPHA | 004926.761 |
| HIERARCH ESO FT ROBJ DELTA | -231244.865 |