Exposure
- ID
- GRAVI.2025-03-01T07:42:29.784_2
- Header ID
- GRAVI.2025-03-01T07:42:29.784
- Date updated
- 2025-03-01 08:00:45 UTC+0000
- Release date
- 2026-03-01 08:00:44 UTC+0000
- UTC Start
- 2025-03-01 07:42:29.784
- UTC End
- 2025-03-01 07:49:09.784
- MJD Start
- 60735.32117806
- MJD End
- 60735.32580768963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.010967
- Ambient temperature (°C)
- 15.16
- Seeing (arcsec)
- 0.47
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 | 83.6720 | 84.1650 | 98.4000 | 99.8000 |
| A0-J2 | 127.5500 | 127.8380 | 78.5000 | 80.0000 |
| A0-K0 | 127.6630 | 127.5350 | 61.1280 | 62.6150 |
| G1-J2 | 56.5940 | 56.4390 | 48.2000 | 49.6000 |
| G1-K0 | 79.3270 | 79.0860 | 21.4590 | 22.5450 |
| J2-K0 | 38.4330 | 38.5800 | 339.9630 | 340.8670 |
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 | 60735.32117806 |
| 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 | 83.672 |
| HIERARCH ESO ISS PBL12 END | 84.165 |
| HIERARCH ESO ISS PBLA12 START | 98.4 |
| HIERARCH ESO ISS PBLA12 END | 99.8 |
| HIERARCH ESO ISS PBL13 START | 127.55 |
| HIERARCH ESO ISS PBL13 END | 127.838 |
| HIERARCH ESO ISS PBLA13 START | 78.5 |
| HIERARCH ESO ISS PBLA13 END | 80.0 |
| HIERARCH ESO ISS PBL14 START | 127.663 |
| HIERARCH ESO ISS PBL14 END | 127.535 |
| HIERARCH ESO ISS PBLA14 START | 61.128 |
| HIERARCH ESO ISS PBLA14 END | 62.615 |
| HIERARCH ESO ISS PBL23 START | 56.594 |
| HIERARCH ESO ISS PBL23 END | 56.439 |
| HIERARCH ESO ISS PBLA23 START | 48.2 |
| HIERARCH ESO ISS PBLA23 END | 49.6 |
| HIERARCH ESO ISS PBL24 START | 79.327 |
| HIERARCH ESO ISS PBL24 END | 79.086 |
| HIERARCH ESO ISS PBLA24 START | 21.459 |
| HIERARCH ESO ISS PBLA24 END | 22.545 |
| HIERARCH ESO ISS PBL34 START | 38.433 |
| HIERARCH ESO ISS PBL34 END | 38.58 |
| HIERARCH ESO ISS PBLA34 START | 339.963 |
| HIERARCH ESO ISS PBLA34 END | 340.867 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.009123 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.012811 |
| HIERARCH ESO ISS AMBI TEMP | 15.16 |
| HIERARCH ESO ISS AMBI FWHM START | 0.48 |
| HIERARCH ESO ISS AMBI FWHM END | 0.46 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.525 |
| HIERARCH ESO FT ROBJ DELTA | -604945.554 |