Exposure
- ID
- GRAVI.2025-03-20T09:05:39.256_1
- Header ID
- GRAVI.2025-03-20T09:05:39.256
- Date updated
- 2025-03-20 09:26:00 UTC+0000
- Release date
- 2026-03-20 09:26:00 UTC+0000
- UTC Start
- 2025-03-20 09:05:39.256
- UTC End
- 2025-03-20 09:12:19.256
- MJD Start
- 60754.37892657
- MJD End
- 60754.38355619963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0030315000000000003
- Ambient temperature (°C)
- 13.78
- Seeing (arcsec)
- 1.71
Observation
- ID
- 65721
- 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
- 48894
- Name
- StarS4
- RA
- 219.843244
- DEC
- -60.82896
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 90.1340 | 90.2180 | 131.3000 | 132.8000 |
| A0-J2 | 127.4420 | 127.1420 | 113.3000 | 114.9000 |
| A0-K0 | 118.1840 | 117.4510 | 95.0780 | 96.6330 |
| G1-J2 | 50.0970 | 49.6610 | 79.7000 | 81.1000 |
| G1-K0 | 70.0020 | 69.3890 | 45.5730 | 46.6070 |
| J2-K0 | 40.0260 | 40.0150 | 1.0110 | 1.9460 |
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 | 60754.37892657 |
| 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 | 90.134 |
| HIERARCH ESO ISS PBL12 END | 90.218 |
| HIERARCH ESO ISS PBLA12 START | 131.3 |
| HIERARCH ESO ISS PBLA12 END | 132.8 |
| HIERARCH ESO ISS PBL13 START | 127.442 |
| HIERARCH ESO ISS PBL13 END | 127.142 |
| HIERARCH ESO ISS PBLA13 START | 113.3 |
| HIERARCH ESO ISS PBLA13 END | 114.9 |
| HIERARCH ESO ISS PBL14 START | 118.184 |
| HIERARCH ESO ISS PBL14 END | 117.451 |
| HIERARCH ESO ISS PBLA14 START | 95.078 |
| HIERARCH ESO ISS PBLA14 END | 96.633 |
| HIERARCH ESO ISS PBL23 START | 50.097 |
| HIERARCH ESO ISS PBL23 END | 49.661 |
| HIERARCH ESO ISS PBLA23 START | 79.7 |
| HIERARCH ESO ISS PBLA23 END | 81.1 |
| HIERARCH ESO ISS PBL24 START | 70.002 |
| HIERARCH ESO ISS PBL24 END | 69.389 |
| HIERARCH ESO ISS PBLA24 START | 45.573 |
| HIERARCH ESO ISS PBLA24 END | 46.607 |
| HIERARCH ESO ISS PBL34 START | 40.026 |
| HIERARCH ESO ISS PBL34 END | 40.015 |
| HIERARCH ESO ISS PBLA34 START | 1.011 |
| HIERARCH ESO ISS PBLA34 END | 1.946 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002781 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003282 |
| HIERARCH ESO ISS AMBI TEMP | 13.78 |
| HIERARCH ESO ISS AMBI FWHM START | 1.75 |
| HIERARCH ESO ISS AMBI FWHM END | 1.67 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.462 |
| HIERARCH ESO FT ROBJ DELTA | -604945.637 |