Exposure
- ID
- GRAVI.2025-03-21T06:12:44.383_2
- Header ID
- GRAVI.2025-03-21T06:12:44.383
- Date updated
- 2025-03-21 06:30:44 UTC+0000
- Release date
- 2026-03-21 06:30:44 UTC+0000
- UTC Start
- 2025-03-21 06:12:44.383
- UTC End
- 2025-03-21 06:19:24.383
- MJD Start
- 60755.25884702
- MJD End
- 60755.26347664963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.008599
- Ambient temperature (°C)
- 15.58
- Seeing (arcsec)
- 0.38
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 | 82.8360 | 83.3610 | 96.0000 | 97.5000 |
| A0-J2 | 127.0350 | 127.3620 | 75.9000 | 77.5000 |
| A0-K0 | 127.8210 | 127.7300 | 58.7210 | 60.2150 |
| G1-J2 | 56.8230 | 56.6840 | 46.0000 | 47.4000 |
| G1-K0 | 79.6840 | 79.4640 | 19.7040 | 20.7940 |
| J2-K0 | 38.1790 | 38.3380 | 338.5090 | 339.4090 |
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 | 60755.25884702 |
| 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 | 82.836 |
| HIERARCH ESO ISS PBL12 END | 83.361 |
| HIERARCH ESO ISS PBLA12 START | 96.0 |
| HIERARCH ESO ISS PBLA12 END | 97.5 |
| HIERARCH ESO ISS PBL13 START | 127.035 |
| HIERARCH ESO ISS PBL13 END | 127.362 |
| HIERARCH ESO ISS PBLA13 START | 75.9 |
| HIERARCH ESO ISS PBLA13 END | 77.5 |
| HIERARCH ESO ISS PBL14 START | 127.821 |
| HIERARCH ESO ISS PBL14 END | 127.73 |
| HIERARCH ESO ISS PBLA14 START | 58.721 |
| HIERARCH ESO ISS PBLA14 END | 60.215 |
| HIERARCH ESO ISS PBL23 START | 56.823 |
| HIERARCH ESO ISS PBL23 END | 56.684 |
| HIERARCH ESO ISS PBLA23 START | 46.0 |
| HIERARCH ESO ISS PBLA23 END | 47.4 |
| HIERARCH ESO ISS PBL24 START | 79.684 |
| HIERARCH ESO ISS PBL24 END | 79.464 |
| HIERARCH ESO ISS PBLA24 START | 19.704 |
| HIERARCH ESO ISS PBLA24 END | 20.794 |
| HIERARCH ESO ISS PBL34 START | 38.179 |
| HIERARCH ESO ISS PBL34 END | 38.338 |
| HIERARCH ESO ISS PBLA34 START | 338.509 |
| HIERARCH ESO ISS PBLA34 END | 339.409 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008599 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.008599 |
| HIERARCH ESO ISS AMBI TEMP | 15.58 |
| HIERARCH ESO ISS AMBI FWHM START | 0.35 |
| HIERARCH ESO ISS AMBI FWHM END | 0.41 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.462 |
| HIERARCH ESO FT ROBJ DELTA | -604945.637 |