Exposure
- ID
- GRAVI.2025-03-01T07:49:47.803_2
- Header ID
- GRAVI.2025-03-01T07:49:47.803
- Date updated
- 2025-03-01 08:10:52 UTC+0000
- Release date
- 2026-03-01 08:10:52 UTC+0000
- UTC Start
- 2025-03-01 07:49:47.803
- UTC End
- 2025-03-01 07:56:27.803
- MJD Start
- 60735.32624772
- MJD End
- 60735.330877349625
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.012216999999999999
- Ambient temperature (°C)
- 15.33
- Seeing (arcsec)
- 0.47
Observation
- ID
- 64901
- 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
- 48331
- Name
- AlphaCenB
- RA
- 219.8480208333333
- DEC
- -60.82932055555556
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 | 84.1910 | 84.6640 | 99.9000 | 101.4000 |
| A0-J2 | 127.8520 | 128.1130 | 80.1000 | 81.6000 |
| A0-K0 | 127.5280 | 127.3740 | 62.6940 | 64.1750 |
| G1-J2 | 56.4300 | 56.2640 | 49.7000 | 51.0000 |
| G1-K0 | 79.0720 | 78.8160 | 22.6030 | 23.6830 |
| J2-K0 | 38.5880 | 38.7270 | 340.9150 | 341.8180 |
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 | 60735.32624772 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843377 |
| DEC | -60.82895 |
| 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 | 84.191 |
| HIERARCH ESO ISS PBL12 END | 84.664 |
| HIERARCH ESO ISS PBLA12 START | 99.9 |
| HIERARCH ESO ISS PBLA12 END | 101.4 |
| HIERARCH ESO ISS PBL13 START | 127.852 |
| HIERARCH ESO ISS PBL13 END | 128.113 |
| HIERARCH ESO ISS PBLA13 START | 80.1 |
| HIERARCH ESO ISS PBLA13 END | 81.6 |
| HIERARCH ESO ISS PBL14 START | 127.528 |
| HIERARCH ESO ISS PBL14 END | 127.374 |
| HIERARCH ESO ISS PBLA14 START | 62.694 |
| HIERARCH ESO ISS PBLA14 END | 64.175 |
| HIERARCH ESO ISS PBL23 START | 56.43 |
| HIERARCH ESO ISS PBL23 END | 56.264 |
| HIERARCH ESO ISS PBLA23 START | 49.7 |
| HIERARCH ESO ISS PBLA23 END | 51.0 |
| HIERARCH ESO ISS PBL24 START | 79.072 |
| HIERARCH ESO ISS PBL24 END | 78.816 |
| HIERARCH ESO ISS PBLA24 START | 22.603 |
| HIERARCH ESO ISS PBLA24 END | 23.683 |
| HIERARCH ESO ISS PBL34 START | 38.588 |
| HIERARCH ESO ISS PBL34 END | 38.727 |
| HIERARCH ESO ISS PBLA34 START | 340.915 |
| HIERARCH ESO ISS PBLA34 END | 341.818 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.012811 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.011623 |
| HIERARCH ESO ISS AMBI TEMP | 15.33 |
| HIERARCH ESO ISS AMBI FWHM START | 0.46 |
| HIERARCH ESO ISS AMBI FWHM END | 0.48 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.525 |
| HIERARCH ESO FT ROBJ DELTA | -604945.554 |