Exposure
- ID
- GRAVI.2024-03-16T06:53:02.172_2
- Header ID
- GRAVI.2024-03-16T06:53:02.172
- Date updated
- 2024-03-16 07:10:35 UTC+0000
- Release date
- 2025-03-16 07:10:35 UTC+0000
- UTC Start
- 2024-03-16 06:53:02.172
- UTC End
- 2024-03-16 06:59:42.172
- MJD Start
- 60385.28683069
- MJD End
- 60385.2914603196
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004438
- Ambient temperature (°C)
- 16.67
- Seeing (arcsec)
- 0.675
Observation
- ID
- 58759
- Category
- science
- Program ID
- 112.25BY.002
- Program Title
- GRAVITY ASTROMETRY OF STELLAR CONJUNCTIONS OF ALPHA CEN FOR STELLAR PHYSICS AND EXOPLANETS
- Program Type
- Normal
- PI / COI
- KERVELLA/ MÉRAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ ROUSSELET-PERRAUT/ PERRIN
Target
- ID
- 43495
- Name
- AlphaCenA
- RA
- 219.849233333333
- DEC
- -60.8319177777778
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 | 84.4120 | 84.8730 | 100.6000 | 102.0000 |
| A0-J2 | 127.9760 | 128.2240 | 80.8000 | 82.3000 |
| A0-K0 | 127.4600 | 127.2960 | 63.3790 | 64.8550 |
| G1-J2 | 56.3540 | 56.1840 | 50.3000 | 51.7000 |
| G1-K0 | 78.9550 | 78.6940 | 23.1020 | 24.1800 |
| J2-K0 | 38.6530 | 38.7880 | 341.3320 | 342.2360 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.25BY.002 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60385.28683069 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenA |
| HIERARCH ESO INS SOBJ NAME | StarS2 |
| RA | 219.845657 |
| DEC | -60.83176 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| 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 | 84.412 |
| HIERARCH ESO ISS PBL12 END | 84.873 |
| HIERARCH ESO ISS PBLA12 START | 100.6 |
| HIERARCH ESO ISS PBLA12 END | 102.0 |
| HIERARCH ESO ISS PBL13 START | 127.976 |
| HIERARCH ESO ISS PBL13 END | 128.224 |
| HIERARCH ESO ISS PBLA13 START | 80.8 |
| HIERARCH ESO ISS PBLA13 END | 82.3 |
| HIERARCH ESO ISS PBL14 START | 127.46 |
| HIERARCH ESO ISS PBL14 END | 127.296 |
| HIERARCH ESO ISS PBLA14 START | 63.379 |
| HIERARCH ESO ISS PBLA14 END | 64.855 |
| HIERARCH ESO ISS PBL23 START | 56.354 |
| HIERARCH ESO ISS PBL23 END | 56.184 |
| HIERARCH ESO ISS PBLA23 START | 50.3 |
| HIERARCH ESO ISS PBLA23 END | 51.7 |
| HIERARCH ESO ISS PBL24 START | 78.955 |
| HIERARCH ESO ISS PBL24 END | 78.694 |
| HIERARCH ESO ISS PBLA24 START | 23.102 |
| HIERARCH ESO ISS PBLA24 END | 24.18 |
| HIERARCH ESO ISS PBL34 START | 38.653 |
| HIERARCH ESO ISS PBL34 END | 38.788 |
| HIERARCH ESO ISS PBLA34 START | 341.332 |
| HIERARCH ESO ISS PBLA34 END | 342.236 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004826 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00405 |
| HIERARCH ESO ISS AMBI TEMP | 16.67 |
| HIERARCH ESO ISS AMBI FWHM START | 0.62 |
| HIERARCH ESO ISS AMBI FWHM END | 0.73 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA |
| HIERARCH ESO FT ROBJ ALPHA | 143923.816 |
| HIERARCH ESO FT ROBJ DELTA | -604954.904 |