Exposure
- ID
- GRAVI.2025-03-21T06:20:02.401_2
- Header ID
- GRAVI.2025-03-21T06:20:02.401
- Date updated
- 2025-03-21 06:40:56 UTC+0000
- Release date
- 2026-03-21 06:40:56 UTC+0000
- UTC Start
- 2025-03-21 06:20:02.401
- UTC End
- 2025-03-21 06:26:42.401
- MJD Start
- 60755.26391668
- MJD End
- 60755.26854630963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.007478
- Ambient temperature (°C)
- 15.52
- Seeing (arcsec)
- 0.405
Observation
- ID
- 65722
- 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
- 48895
- Name
- AlphaCenB
- RA
- 219.8477583333333
- DEC
- -60.82934361111111
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 | 83.3900 | 83.8940 | 97.6000 | 99.0000 |
| A0-J2 | 127.3800 | 127.6820 | 77.6000 | 79.1000 |
| A0-K0 | 127.7240 | 127.6080 | 60.3010 | 61.7910 |
| G1-J2 | 56.6750 | 56.5260 | 47.4000 | 48.8000 |
| G1-K0 | 79.4510 | 79.2170 | 20.8570 | 21.9440 |
| J2-K0 | 38.3470 | 38.4980 | 339.4610 | 340.3630 |
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 | 60755.26391668 |
| 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 | 83.39 |
| HIERARCH ESO ISS PBL12 END | 83.894 |
| HIERARCH ESO ISS PBLA12 START | 97.6 |
| HIERARCH ESO ISS PBLA12 END | 99.0 |
| HIERARCH ESO ISS PBL13 START | 127.38 |
| HIERARCH ESO ISS PBL13 END | 127.682 |
| HIERARCH ESO ISS PBLA13 START | 77.6 |
| HIERARCH ESO ISS PBLA13 END | 79.1 |
| HIERARCH ESO ISS PBL14 START | 127.724 |
| HIERARCH ESO ISS PBL14 END | 127.608 |
| HIERARCH ESO ISS PBLA14 START | 60.301 |
| HIERARCH ESO ISS PBLA14 END | 61.791 |
| HIERARCH ESO ISS PBL23 START | 56.675 |
| HIERARCH ESO ISS PBL23 END | 56.526 |
| HIERARCH ESO ISS PBLA23 START | 47.4 |
| HIERARCH ESO ISS PBLA23 END | 48.8 |
| HIERARCH ESO ISS PBL24 START | 79.451 |
| HIERARCH ESO ISS PBL24 END | 79.217 |
| HIERARCH ESO ISS PBLA24 START | 20.857 |
| HIERARCH ESO ISS PBLA24 END | 21.944 |
| HIERARCH ESO ISS PBL34 START | 38.347 |
| HIERARCH ESO ISS PBL34 END | 38.498 |
| HIERARCH ESO ISS PBLA34 START | 339.461 |
| HIERARCH ESO ISS PBLA34 END | 340.363 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008599 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.006357 |
| HIERARCH ESO ISS AMBI TEMP | 15.52 |
| HIERARCH ESO ISS AMBI FWHM START | 0.41 |
| HIERARCH ESO ISS AMBI FWHM END | 0.4 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.462 |
| HIERARCH ESO FT ROBJ DELTA | -604945.637 |