Exposure
- ID
- GRAVI.2025-03-12T06:41:24.326_2
- Header ID
- GRAVI.2025-03-12T06:41:24.326
- Date updated
- 2025-03-12 07:00:55 UTC+0000
- Release date
- 2026-03-12 07:00:55 UTC+0000
- UTC Start
- 2025-03-12 06:41:24.326
- UTC End
- 2025-03-12 06:48:04.326
- MJD Start
- 60746.27875377
- MJD End
- 60746.28338339963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0091285
- Ambient temperature (°C)
- 14.42
- Seeing (arcsec)
- 0.61
Observation
- ID
- 65031
- 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
- 48421
- Name
- AlphaCenB
- RA
- 219.84789999999998
- DEC
- -60.82933583333334
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 | 20.5750 | 20.7550 | 122.7000 | 123.8000 |
| A0-D0 | 31.9810 | 31.9630 | 57.3000 | 58.8000 |
| A0-C1 | 20.5740 | 20.7100 | 94.5800 | 96.0630 |
| B2-D0 | 29.9610 | 29.8830 | 18.7000 | 19.7000 |
| B2-C1 | 9.9780 | 9.9520 | 18.6150 | 19.7060 |
| D0-C1 | 19.9830 | 19.9310 | 198.6780 | 199.7700 |
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 | 60746.27875377 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843319 |
| 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 | 20.575 |
| HIERARCH ESO ISS PBL12 END | 20.755 |
| HIERARCH ESO ISS PBLA12 START | 122.7 |
| HIERARCH ESO ISS PBLA12 END | 123.8 |
| HIERARCH ESO ISS PBL13 START | 31.981 |
| HIERARCH ESO ISS PBL13 END | 31.963 |
| HIERARCH ESO ISS PBLA13 START | 57.3 |
| HIERARCH ESO ISS PBLA13 END | 58.8 |
| HIERARCH ESO ISS PBL14 START | 20.574 |
| HIERARCH ESO ISS PBL14 END | 20.71 |
| HIERARCH ESO ISS PBLA14 START | 94.58 |
| HIERARCH ESO ISS PBLA14 END | 96.063 |
| HIERARCH ESO ISS PBL23 START | 29.961 |
| HIERARCH ESO ISS PBL23 END | 29.883 |
| HIERARCH ESO ISS PBLA23 START | 18.7 |
| HIERARCH ESO ISS PBLA23 END | 19.7 |
| HIERARCH ESO ISS PBL24 START | 9.978 |
| HIERARCH ESO ISS PBL24 END | 9.952 |
| HIERARCH ESO ISS PBLA24 START | 18.615 |
| HIERARCH ESO ISS PBLA24 END | 19.706 |
| HIERARCH ESO ISS PBL34 START | 19.983 |
| HIERARCH ESO ISS PBL34 END | 19.931 |
| HIERARCH ESO ISS PBLA34 START | 198.678 |
| HIERARCH ESO ISS PBLA34 END | 199.77 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00772 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010537 |
| HIERARCH ESO ISS AMBI TEMP | 14.42 |
| HIERARCH ESO ISS AMBI FWHM START | 0.74 |
| HIERARCH ESO ISS AMBI FWHM END | 0.48 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.496 |
| HIERARCH ESO FT ROBJ DELTA | -604945.609 |