Exposure
- ID
- GRAVI.2025-03-20T07:30:27.013_2
- Header ID
- GRAVI.2025-03-20T07:30:27.013
- Date updated
- 2025-03-20 07:50:48 UTC+0000
- Release date
- 2026-03-20 07:50:48 UTC+0000
- UTC Start
- 2025-03-20 07:30:27.013
- UTC End
- 2025-03-20 07:37:07.013
- MJD Start
- 60754.31281265
- MJD End
- 60754.31744227963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0031479999999999998
- Ambient temperature (°C)
- 14.43
- Seeing (arcsec)
- 1.045
Observation
- ID
- 65720
- 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
- 48893
- Name
- AlphaCenB
- RA
- 219.84782916666663
- DEC
- -60.82934055555556
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 G1 J2 K0
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 87.3990 | 87.7120 | 111.4000 | 112.9000 |
| A0-J2 | 129.1800 | 129.2220 | 92.2000 | 93.8000 |
| A0-K0 | 125.5930 | 125.2280 | 74.4770 | 75.9550 |
| G1-J2 | 54.7870 | 54.5270 | 60.6000 | 62.0000 |
| G1-K0 | 76.6210 | 76.2450 | 31.1780 | 32.2440 |
| J2-K0 | 39.4940 | 39.5760 | 348.2160 | 349.1430 |
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 | 60754.31281265 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843282 |
| 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 | 87.399 |
| HIERARCH ESO ISS PBL12 END | 87.712 |
| HIERARCH ESO ISS PBLA12 START | 111.4 |
| HIERARCH ESO ISS PBLA12 END | 112.9 |
| HIERARCH ESO ISS PBL13 START | 129.18 |
| HIERARCH ESO ISS PBL13 END | 129.222 |
| HIERARCH ESO ISS PBLA13 START | 92.2 |
| HIERARCH ESO ISS PBLA13 END | 93.8 |
| HIERARCH ESO ISS PBL14 START | 125.593 |
| HIERARCH ESO ISS PBL14 END | 125.228 |
| HIERARCH ESO ISS PBLA14 START | 74.477 |
| HIERARCH ESO ISS PBLA14 END | 75.955 |
| HIERARCH ESO ISS PBL23 START | 54.787 |
| HIERARCH ESO ISS PBL23 END | 54.527 |
| HIERARCH ESO ISS PBLA23 START | 60.6 |
| HIERARCH ESO ISS PBLA23 END | 62.0 |
| HIERARCH ESO ISS PBL24 START | 76.621 |
| HIERARCH ESO ISS PBL24 END | 76.245 |
| HIERARCH ESO ISS PBLA24 START | 31.178 |
| HIERARCH ESO ISS PBLA24 END | 32.244 |
| HIERARCH ESO ISS PBL34 START | 39.494 |
| HIERARCH ESO ISS PBL34 END | 39.576 |
| HIERARCH ESO ISS PBLA34 START | 348.216 |
| HIERARCH ESO ISS PBLA34 END | 349.143 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003173 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003123 |
| HIERARCH ESO ISS AMBI TEMP | 14.43 |
| HIERARCH ESO ISS AMBI FWHM START | 1.0 |
| HIERARCH ESO ISS AMBI FWHM END | 1.09 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.479 |
| HIERARCH ESO FT ROBJ DELTA | -604945.626 |