Exposure
- ID
- GRAVI.2025-03-10T07:23:17.793_2
- Header ID
- GRAVI.2025-03-10T07:23:17.793
- Date updated
- 2025-03-10 07:40:34 UTC+0000
- Release date
- 2026-03-10 07:40:34 UTC+0000
- UTC Start
- 2025-03-10 07:23:17.793
- UTC End
- 2025-03-10 07:29:57.793
- MJD Start
- 60744.30784483
- MJD End
- 60744.31247445963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.012597500000000001
- Ambient temperature (°C)
- 13.48
- Seeing (arcsec)
- 0.325
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 | 21.4040 | 21.5570 | 128.5000 | 129.7000 |
| A0-D0 | 31.8410 | 31.7950 | 64.6000 | 66.1000 |
| A0-C1 | 21.1940 | 21.3050 | 101.7790 | 103.2310 |
| B2-D0 | 29.5320 | 29.4290 | 24.0000 | 25.1000 |
| B2-C1 | 9.8350 | 9.8010 | 23.9420 | 25.0220 |
| D0-C1 | 19.6960 | 19.6280 | 204.0090 | 205.0890 |
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 | 60744.30784483 |
| 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 | 21.404 |
| HIERARCH ESO ISS PBL12 END | 21.557 |
| HIERARCH ESO ISS PBLA12 START | 128.5 |
| HIERARCH ESO ISS PBLA12 END | 129.7 |
| HIERARCH ESO ISS PBL13 START | 31.841 |
| HIERARCH ESO ISS PBL13 END | 31.795 |
| HIERARCH ESO ISS PBLA13 START | 64.6 |
| HIERARCH ESO ISS PBLA13 END | 66.1 |
| HIERARCH ESO ISS PBL14 START | 21.194 |
| HIERARCH ESO ISS PBL14 END | 21.305 |
| HIERARCH ESO ISS PBLA14 START | 101.779 |
| HIERARCH ESO ISS PBLA14 END | 103.231 |
| HIERARCH ESO ISS PBL23 START | 29.532 |
| HIERARCH ESO ISS PBL23 END | 29.429 |
| HIERARCH ESO ISS PBLA23 START | 24.0 |
| HIERARCH ESO ISS PBLA23 END | 25.1 |
| HIERARCH ESO ISS PBL24 START | 9.835 |
| HIERARCH ESO ISS PBL24 END | 9.801 |
| HIERARCH ESO ISS PBLA24 START | 23.942 |
| HIERARCH ESO ISS PBLA24 END | 25.022 |
| HIERARCH ESO ISS PBL34 START | 19.696 |
| HIERARCH ESO ISS PBL34 END | 19.628 |
| HIERARCH ESO ISS PBLA34 START | 204.009 |
| HIERARCH ESO ISS PBLA34 END | 205.089 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.012687 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.012508 |
| HIERARCH ESO ISS AMBI TEMP | 13.48 |
| HIERARCH ESO ISS AMBI FWHM START | 0.32 |
| HIERARCH ESO ISS AMBI FWHM END | 0.33 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.511 |
| HIERARCH ESO FT ROBJ DELTA | -604945.584 |