Exposure
- ID
- GRAVI.2025-03-01T08:04:32.841_2
- Header ID
- GRAVI.2025-03-01T08:04:32.841
- Date updated
- 2025-03-01 08:20:42 UTC+0000
- Release date
- 2026-03-01 08:20:42 UTC+0000
- UTC Start
- 2025-03-01 08:04:32.841
- UTC End
- 2025-03-01 08:11:12.841
- MJD Start
- 60735.33649121
- MJD End
- 60735.34112083963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.009597000000000001
- Ambient temperature (°C)
- 15.79
- Seeing (arcsec)
- 0.5
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 | 85.1700 | 85.6000 | 103.0000 | 104.5000 |
| A0-J2 | 128.3750 | 128.5790 | 83.3000 | 84.9000 |
| A0-K0 | 127.1730 | 126.9680 | 65.8440 | 67.3220 |
| G1-J2 | 56.0640 | 55.8740 | 52.6000 | 54.0000 |
| G1-K0 | 78.5110 | 78.2250 | 24.9020 | 25.9810 |
| J2-K0 | 38.8750 | 38.9980 | 342.8460 | 343.7580 |
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 | 60735.33649121 |
| 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 | 85.17 |
| HIERARCH ESO ISS PBL12 END | 85.6 |
| HIERARCH ESO ISS PBLA12 START | 103.0 |
| HIERARCH ESO ISS PBLA12 END | 104.5 |
| HIERARCH ESO ISS PBL13 START | 128.375 |
| HIERARCH ESO ISS PBL13 END | 128.579 |
| HIERARCH ESO ISS PBLA13 START | 83.3 |
| HIERARCH ESO ISS PBLA13 END | 84.9 |
| HIERARCH ESO ISS PBL14 START | 127.173 |
| HIERARCH ESO ISS PBL14 END | 126.968 |
| HIERARCH ESO ISS PBLA14 START | 65.844 |
| HIERARCH ESO ISS PBLA14 END | 67.322 |
| HIERARCH ESO ISS PBL23 START | 56.064 |
| HIERARCH ESO ISS PBL23 END | 55.874 |
| HIERARCH ESO ISS PBLA23 START | 52.6 |
| HIERARCH ESO ISS PBLA23 END | 54.0 |
| HIERARCH ESO ISS PBL24 START | 78.511 |
| HIERARCH ESO ISS PBL24 END | 78.225 |
| HIERARCH ESO ISS PBLA24 START | 24.902 |
| HIERARCH ESO ISS PBLA24 END | 25.981 |
| HIERARCH ESO ISS PBL34 START | 38.875 |
| HIERARCH ESO ISS PBL34 END | 38.998 |
| HIERARCH ESO ISS PBLA34 START | 342.846 |
| HIERARCH ESO ISS PBLA34 END | 343.758 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.009286 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.009908 |
| HIERARCH ESO ISS AMBI TEMP | 15.79 |
| HIERARCH ESO ISS AMBI FWHM START | 0.52 |
| 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 |