Exposure
- ID
- GRAVI.2025-03-20T08:42:54.197_1
- Header ID
- GRAVI.2025-03-20T08:42:54.197
- Date updated
- 2025-03-20 09:00:52 UTC+0000
- Release date
- 2026-03-20 09:00:52 UTC+0000
- UTC Start
- 2025-03-20 08:42:54.197
- UTC End
- 2025-03-20 08:49:34.197
- MJD Start
- 60754.36312728
- MJD End
- 60754.367756909625
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0037904999999999996
- Ambient temperature (°C)
- 13.7
- Seeing (arcsec)
- 1.21
Observation
- ID
- 65721
- Category
- science
- Program ID
- 114.278L.001
- Program Title
- CONJUNCTIONS OF ALPHA CENTAURI: GRAVITY ASTROMETRY OF THE B-S4 EVENT AND CRIRES CHARACTERIZATION OF SOURCE S5
- Program Type
- Normal
- PI / COI
- KERVELLA / MÉRAND / LACOUR / FORVEILLE / ARENOU / THEVENIN / BOURDAROT / BRANDNER / STRAUBMEIER / GARCIA / WOILLEZ / EISENHAUER / PAUMARD / ROUSSELET-PERRAUT / PERRIN
Target
- ID
- 48894
- Name
- StarS4
- RA
- 219.843244
- DEC
- -60.82896
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 89.7610 | 89.8910 | 126.5000 | 127.9000 |
| A0-J2 | 128.2810 | 128.0500 | 108.2000 | 109.8000 |
| A0-K0 | 120.4160 | 119.7640 | 90.0470 | 91.5700 |
| G1-J2 | 51.4410 | 51.0460 | 75.0000 | 76.4000 |
| G1-K0 | 71.8830 | 71.3300 | 42.1700 | 43.2090 |
| J2-K0 | 40.0140 | 40.0250 | 357.9420 | 358.8770 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 114.278L.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60754.36312728 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843244 |
| DEC | -60.82896 |
| 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 | 89.761 |
| HIERARCH ESO ISS PBL12 END | 89.891 |
| HIERARCH ESO ISS PBLA12 START | 126.5 |
| HIERARCH ESO ISS PBLA12 END | 127.9 |
| HIERARCH ESO ISS PBL13 START | 128.281 |
| HIERARCH ESO ISS PBL13 END | 128.05 |
| HIERARCH ESO ISS PBLA13 START | 108.2 |
| HIERARCH ESO ISS PBLA13 END | 109.8 |
| HIERARCH ESO ISS PBL14 START | 120.416 |
| HIERARCH ESO ISS PBL14 END | 119.764 |
| HIERARCH ESO ISS PBLA14 START | 90.047 |
| HIERARCH ESO ISS PBLA14 END | 91.57 |
| HIERARCH ESO ISS PBL23 START | 51.441 |
| HIERARCH ESO ISS PBL23 END | 51.046 |
| HIERARCH ESO ISS PBLA23 START | 75.0 |
| HIERARCH ESO ISS PBLA23 END | 76.4 |
| HIERARCH ESO ISS PBL24 START | 71.883 |
| HIERARCH ESO ISS PBL24 END | 71.33 |
| HIERARCH ESO ISS PBLA24 START | 42.17 |
| HIERARCH ESO ISS PBLA24 END | 43.209 |
| HIERARCH ESO ISS PBL34 START | 40.014 |
| HIERARCH ESO ISS PBL34 END | 40.025 |
| HIERARCH ESO ISS PBLA34 START | 357.942 |
| HIERARCH ESO ISS PBLA34 END | 358.877 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003441 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00414 |
| HIERARCH ESO ISS AMBI TEMP | 13.7 |
| HIERARCH ESO ISS AMBI FWHM START | 1.24 |
| HIERARCH ESO ISS AMBI FWHM END | 1.18 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.462 |
| HIERARCH ESO FT ROBJ DELTA | -604945.637 |