Exposure
- ID
- GRAVI.2025-03-09T05:59:15.753_2
- Header ID
- GRAVI.2025-03-09T05:59:15.753
- Date updated
- 2025-03-09 06:20:47 UTC+0000
- Release date
- 2026-03-09 06:20:47 UTC+0000
- UTC Start
- 2025-03-09 05:59:15.753
- UTC End
- 2025-03-09 06:05:55.753
- MJD Start
- 60743.24948788
- MJD End
- 60743.25411750963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.007981499999999999
- Ambient temperature (°C)
- 15.03
- Seeing (arcsec)
- 0.605
Observation
- ID
- 64998
- 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
- 48395
- Name
- AlphaCenB
- RA
- 219.84796249999997
- DEC
- -60.829328888888895
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 | 18.9840 | 19.2080 | 113.3000 | 114.5000 |
| A0-D0 | 31.9620 | 31.9770 | 45.4000 | 47.0000 |
| A0-C1 | 19.3660 | 19.5350 | 82.6690 | 84.2440 |
| B2-D0 | 30.4010 | 30.3600 | 10.1000 | 11.2000 |
| B2-C1 | 10.1250 | 10.1110 | 10.0580 | 11.1620 |
| D0-C1 | 20.2770 | 20.2490 | 190.1160 | 191.2210 |
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 | 60743.24948788 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843348 |
| 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 | 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 | 18.984 |
| HIERARCH ESO ISS PBL12 END | 19.208 |
| HIERARCH ESO ISS PBLA12 START | 113.3 |
| HIERARCH ESO ISS PBLA12 END | 114.5 |
| HIERARCH ESO ISS PBL13 START | 31.962 |
| HIERARCH ESO ISS PBL13 END | 31.977 |
| HIERARCH ESO ISS PBLA13 START | 45.4 |
| HIERARCH ESO ISS PBLA13 END | 47.0 |
| HIERARCH ESO ISS PBL14 START | 19.366 |
| HIERARCH ESO ISS PBL14 END | 19.535 |
| HIERARCH ESO ISS PBLA14 START | 82.669 |
| HIERARCH ESO ISS PBLA14 END | 84.244 |
| HIERARCH ESO ISS PBL23 START | 30.401 |
| HIERARCH ESO ISS PBL23 END | 30.36 |
| HIERARCH ESO ISS PBLA23 START | 10.1 |
| HIERARCH ESO ISS PBLA23 END | 11.2 |
| HIERARCH ESO ISS PBL24 START | 10.125 |
| HIERARCH ESO ISS PBL24 END | 10.111 |
| HIERARCH ESO ISS PBLA24 START | 10.058 |
| HIERARCH ESO ISS PBLA24 END | 11.162 |
| HIERARCH ESO ISS PBL34 START | 20.277 |
| HIERARCH ESO ISS PBL34 END | 20.249 |
| HIERARCH ESO ISS PBLA34 START | 190.116 |
| HIERARCH ESO ISS PBLA34 END | 191.221 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.007056 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.008907 |
| HIERARCH ESO ISS AMBI TEMP | 15.03 |
| HIERARCH ESO ISS AMBI FWHM START | 0.66 |
| HIERARCH ESO ISS AMBI FWHM END | 0.55 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.511 |
| HIERARCH ESO FT ROBJ DELTA | -604945.584 |