Exposure
- ID
- GRAVI.2024-07-26T01:43:21.536_2
- Header ID
- GRAVI.2024-07-26T01:43:21.536
- Date updated
- 2024-07-26 02:05:32 UTC+0000
- Release date
- 2025-07-26 02:05:32 UTC+0000
- UTC Start
- 2024-07-26 01:43:21.536
- UTC End
- 2024-07-26 01:50:01.536
- MJD Start
- 60517.07177704
- MJD End
- 60517.0764066696
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0022995
- Ambient temperature (°C)
- 12.92
- Seeing (arcsec)
- 0.895
Observation
- ID
- 60197
- Category
- science
- Program ID
- 113.267X.001
- Program Title
- GRAVITY ASTROMETRY OF STELLAR CONJUNCTIONS OF ALPHA CENTAURI FOR STELLAR PHYSICS AND EXOPLANETS
- Program Type
- Normal
- PI / COI
- KERVELLA / MÉRAND / LACOUR / FORVEILLE / ARENOU / THEVENIN / BOURDAROT / BRANDNER / STRAUBMEIER / GARCIA / WOILLEZ / EISENHAUER / PAUMARD / ROUSSELET-PERRAUT / PERRIN
Target
- ID
- 44696
- Name
- AlphaCenB
- RA
- 219.84835
- DEC
- -60.8293502777778
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 B2 D0 C1
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-B2 | 23.9750 | 24.0060 | 164.1000 | 165.3000 |
| A0-D0 | 27.7370 | 27.5160 | 109.5000 | 111.2000 |
| A0-C1 | 22.6240 | 22.6230 | 144.6300 | 146.1370 |
| B2-D0 | 23.9480 | 23.6580 | 54.8000 | 55.8000 |
| B2-C1 | 7.9770 | 7.8800 | 54.7460 | 55.7680 |
| D0-C1 | 15.9710 | 15.7770 | 234.8360 | 235.8590 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 113.267X.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60517.07177704 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843551 |
| DEC | -60.82897 |
| 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 | B2 |
| HIERARCH ESO ISS CONF STATION3 | D0 |
| HIERARCH ESO ISS CONF STATION4 | C1 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 23.975 |
| HIERARCH ESO ISS PBL12 END | 24.006 |
| HIERARCH ESO ISS PBLA12 START | 164.1 |
| HIERARCH ESO ISS PBLA12 END | 165.3 |
| HIERARCH ESO ISS PBL13 START | 27.737 |
| HIERARCH ESO ISS PBL13 END | 27.516 |
| HIERARCH ESO ISS PBLA13 START | 109.5 |
| HIERARCH ESO ISS PBLA13 END | 111.2 |
| HIERARCH ESO ISS PBL14 START | 22.624 |
| HIERARCH ESO ISS PBL14 END | 22.623 |
| HIERARCH ESO ISS PBLA14 START | 144.63 |
| HIERARCH ESO ISS PBLA14 END | 146.137 |
| HIERARCH ESO ISS PBL23 START | 23.948 |
| HIERARCH ESO ISS PBL23 END | 23.658 |
| HIERARCH ESO ISS PBLA23 START | 54.8 |
| HIERARCH ESO ISS PBLA23 END | 55.8 |
| HIERARCH ESO ISS PBL24 START | 7.977 |
| HIERARCH ESO ISS PBL24 END | 7.88 |
| HIERARCH ESO ISS PBLA24 START | 54.746 |
| HIERARCH ESO ISS PBLA24 END | 55.768 |
| HIERARCH ESO ISS PBL34 START | 15.971 |
| HIERARCH ESO ISS PBL34 END | 15.777 |
| HIERARCH ESO ISS PBLA34 START | 234.836 |
| HIERARCH ESO ISS PBLA34 END | 235.859 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002113 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002486 |
| HIERARCH ESO ISS AMBI TEMP | 12.92 |
| HIERARCH ESO ISS AMBI FWHM START | 0.94 |
| HIERARCH ESO ISS AMBI FWHM END | 0.85 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.604 |
| HIERARCH ESO FT ROBJ DELTA | -604945.661 |