Exposure
- ID
- GRAVI.2024-02-27T07:23:55.213_2
- Header ID
- GRAVI.2024-02-27T07:23:55.213
- Date updated
- 2024-02-27 08:27:10 UTC+0000
- Release date
- 2025-02-27 08:27:10 UTC+0000
- UTC Start
- 2024-02-27 07:23:55.213
- UTC End
- 2024-02-27 07:29:55.213
- MJD Start
- 60367.30827793
- MJD End
- 60367.3124445967
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0089585
- Ambient temperature (°C)
- 14.52
- Seeing (arcsec)
- 0.6
Observation
- ID
- 58531
- Category
- science
- Program ID
- 112.25BY.001
- 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
- 43330
- Name
- AlphaCenB
- RA
- 219.849970833333
- DEC
- -60.8296177777778
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 | 50.1360 | 50.0310 | 16.8000 | 17.8000 |
| U1-U3 | 93.3510 | 93.1260 | 22.9000 | 23.9000 |
| U1-U4 | 129.0230 | 128.8450 | 46.5350 | 47.8360 |
| U2-U3 | 43.8140 | 43.7050 | 29.8000 | 30.9000 |
| U2-U4 | 89.0100 | 89.1070 | 62.7380 | 64.1440 |
| U3-U4 | 57.4100 | 57.7340 | 87.2510 | 88.6360 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.25BY.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60367.30827793 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS3 |
| RA | 219.850593 |
| DEC | -60.83028 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| 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 | 377.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 50.136 |
| HIERARCH ESO ISS PBL12 END | 50.031 |
| HIERARCH ESO ISS PBLA12 START | 16.8 |
| HIERARCH ESO ISS PBLA12 END | 17.8 |
| HIERARCH ESO ISS PBL13 START | 93.351 |
| HIERARCH ESO ISS PBL13 END | 93.126 |
| HIERARCH ESO ISS PBLA13 START | 22.9 |
| HIERARCH ESO ISS PBLA13 END | 23.9 |
| HIERARCH ESO ISS PBL14 START | 129.023 |
| HIERARCH ESO ISS PBL14 END | 128.845 |
| HIERARCH ESO ISS PBLA14 START | 46.535 |
| HIERARCH ESO ISS PBLA14 END | 47.836 |
| HIERARCH ESO ISS PBL23 START | 43.814 |
| HIERARCH ESO ISS PBL23 END | 43.705 |
| HIERARCH ESO ISS PBLA23 START | 29.8 |
| HIERARCH ESO ISS PBLA23 END | 30.9 |
| HIERARCH ESO ISS PBL24 START | 89.01 |
| HIERARCH ESO ISS PBL24 END | 89.107 |
| HIERARCH ESO ISS PBLA24 START | 62.738 |
| HIERARCH ESO ISS PBLA24 END | 64.144 |
| HIERARCH ESO ISS PBL34 START | 57.41 |
| HIERARCH ESO ISS PBL34 END | 57.734 |
| HIERARCH ESO ISS PBLA34 START | 87.251 |
| HIERARCH ESO ISS PBLA34 END | 88.636 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008863 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.009054 |
| HIERARCH ESO ISS AMBI TEMP | 14.52 |
| HIERARCH ESO ISS AMBI FWHM START | 0.57 |
| HIERARCH ESO ISS AMBI FWHM END | 0.63 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.993 |
| HIERARCH ESO FT ROBJ DELTA | -604946.624 |