Exposure
- ID
- GRAVI.2025-03-03T09:08:55.376_2
- Header ID
- GRAVI.2025-03-03T09:08:55.376
- Date updated
- 2025-03-03 09:25:49 UTC+0000
- Release date
- 2026-03-03 09:25:48 UTC+0000
- UTC Start
- 2025-03-03 09:08:55.376
- UTC End
- 2025-03-03 09:15:35.376
- MJD Start
- 60737.38119648
- MJD End
- 60737.385826109625
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004543999999999999
- Ambient temperature (°C)
- 12.75
- Seeing (arcsec)
- 0.875
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 | 88.6710 | 88.8980 | 118.0000 | 119.4000 |
| A0-J2 | 129.1450 | 129.0610 | 99.2000 | 100.7000 |
| A0-K0 | 123.7070 | 123.2160 | 81.2190 | 82.7050 |
| G1-J2 | 53.5010 | 53.1830 | 66.9000 | 68.2000 |
| G1-K0 | 74.7810 | 74.3320 | 36.0070 | 37.0590 |
| J2-K0 | 39.8140 | 39.8640 | 352.4480 | 353.3790 |
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 | 60737.38119648 |
| 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 | 88.671 |
| HIERARCH ESO ISS PBL12 END | 88.898 |
| HIERARCH ESO ISS PBLA12 START | 118.0 |
| HIERARCH ESO ISS PBLA12 END | 119.4 |
| HIERARCH ESO ISS PBL13 START | 129.145 |
| HIERARCH ESO ISS PBL13 END | 129.061 |
| HIERARCH ESO ISS PBLA13 START | 99.2 |
| HIERARCH ESO ISS PBLA13 END | 100.7 |
| HIERARCH ESO ISS PBL14 START | 123.707 |
| HIERARCH ESO ISS PBL14 END | 123.216 |
| HIERARCH ESO ISS PBLA14 START | 81.219 |
| HIERARCH ESO ISS PBLA14 END | 82.705 |
| HIERARCH ESO ISS PBL23 START | 53.501 |
| HIERARCH ESO ISS PBL23 END | 53.183 |
| HIERARCH ESO ISS PBLA23 START | 66.9 |
| HIERARCH ESO ISS PBLA23 END | 68.2 |
| HIERARCH ESO ISS PBL24 START | 74.781 |
| HIERARCH ESO ISS PBL24 END | 74.332 |
| HIERARCH ESO ISS PBLA24 START | 36.007 |
| HIERARCH ESO ISS PBLA24 END | 37.059 |
| HIERARCH ESO ISS PBL34 START | 39.814 |
| HIERARCH ESO ISS PBL34 END | 39.864 |
| HIERARCH ESO ISS PBLA34 START | 352.448 |
| HIERARCH ESO ISS PBLA34 END | 353.379 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004984 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004104 |
| HIERARCH ESO ISS AMBI TEMP | 12.75 |
| HIERARCH ESO ISS AMBI FWHM START | 0.86 |
| HIERARCH ESO ISS AMBI FWHM END | 0.89 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.525 |
| HIERARCH ESO FT ROBJ DELTA | -604945.554 |