Exposure
- ID
- GRAVI.2025-03-09T06:06:33.771_2
- Header ID
- GRAVI.2025-03-09T06:06:33.771
- Date updated
- 2025-03-09 06:25:38 UTC+0000
- Release date
- 2026-03-09 06:25:37 UTC+0000
- UTC Start
- 2025-03-09 06:06:33.771
- UTC End
- 2025-03-09 06:13:13.771
- MJD Start
- 60743.25455754
- MJD End
- 60743.25918716963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0076705
- Ambient temperature (°C)
- 14.88
- Seeing (arcsec)
- 0.66
Observation
- ID
- 64998
- 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
- 48395
- Name
- AlphaCenB
- RA
- 219.84796249999997
- DEC
- -60.829328888888895
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 B2 D0 C1
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-B2 | 19.2190 | 19.4360 | 114.6000 | 115.8000 |
| A0-D0 | 31.9780 | 31.9900 | 47.0000 | 48.6000 |
| A0-C1 | 19.5440 | 19.7090 | 84.3270 | 85.8800 |
| B2-D0 | 30.3580 | 30.3120 | 11.3000 | 12.4000 |
| B2-C1 | 10.1100 | 10.0950 | 11.2220 | 12.3200 |
| D0-C1 | 20.2480 | 20.2170 | 191.2800 | 192.3790 |
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 | 60743.25455754 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843348 |
| 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 | B2 |
| HIERARCH ESO ISS CONF STATION3 | D0 |
| HIERARCH ESO ISS CONF STATION4 | C1 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 19.219 |
| HIERARCH ESO ISS PBL12 END | 19.436 |
| HIERARCH ESO ISS PBLA12 START | 114.6 |
| HIERARCH ESO ISS PBLA12 END | 115.8 |
| HIERARCH ESO ISS PBL13 START | 31.978 |
| HIERARCH ESO ISS PBL13 END | 31.99 |
| HIERARCH ESO ISS PBLA13 START | 47.0 |
| HIERARCH ESO ISS PBLA13 END | 48.6 |
| HIERARCH ESO ISS PBL14 START | 19.544 |
| HIERARCH ESO ISS PBL14 END | 19.709 |
| HIERARCH ESO ISS PBLA14 START | 84.327 |
| HIERARCH ESO ISS PBLA14 END | 85.88 |
| HIERARCH ESO ISS PBL23 START | 30.358 |
| HIERARCH ESO ISS PBL23 END | 30.312 |
| HIERARCH ESO ISS PBLA23 START | 11.3 |
| HIERARCH ESO ISS PBLA23 END | 12.4 |
| HIERARCH ESO ISS PBL24 START | 10.11 |
| HIERARCH ESO ISS PBL24 END | 10.095 |
| HIERARCH ESO ISS PBLA24 START | 11.222 |
| HIERARCH ESO ISS PBLA24 END | 12.32 |
| HIERARCH ESO ISS PBL34 START | 20.248 |
| HIERARCH ESO ISS PBL34 END | 20.217 |
| HIERARCH ESO ISS PBLA34 START | 191.28 |
| HIERARCH ESO ISS PBLA34 END | 192.379 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008907 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.006434 |
| HIERARCH ESO ISS AMBI TEMP | 14.88 |
| HIERARCH ESO ISS AMBI FWHM START | 0.55 |
| HIERARCH ESO ISS AMBI FWHM END | 0.77 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.511 |
| HIERARCH ESO FT ROBJ DELTA | -604945.584 |