Exposure
- ID
- GRAVI.2025-03-03T08:46:46.319_2
- Header ID
- GRAVI.2025-03-03T08:46:46.319
- Date updated
- 2025-03-03 09:05:44 UTC+0000
- Release date
- 2026-03-03 09:05:44 UTC+0000
- UTC Start
- 2025-03-03 08:46:46.319
- UTC End
- 2025-03-03 08:53:26.319
- MJD Start
- 60737.36581388
- MJD End
- 60737.37044350963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0046654999999999995
- Ambient temperature (°C)
- 12.7
- Seeing (arcsec)
- 0.89
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 | 87.8230 | 88.1100 | 113.4000 | 114.8000 |
| A0-J2 | 129.2300 | 129.2340 | 94.3000 | 95.8000 |
| A0-K0 | 125.0880 | 124.6860 | 76.5010 | 77.9800 |
| G1-J2 | 54.4290 | 54.1520 | 62.5000 | 63.9000 |
| G1-K0 | 76.1050 | 75.7080 | 32.6360 | 33.6980 |
| J2-K0 | 39.6060 | 39.6790 | 349.4870 | 350.4160 |
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 | 60737.36581388 |
| 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 | 87.823 |
| HIERARCH ESO ISS PBL12 END | 88.11 |
| HIERARCH ESO ISS PBLA12 START | 113.4 |
| HIERARCH ESO ISS PBLA12 END | 114.8 |
| HIERARCH ESO ISS PBL13 START | 129.23 |
| HIERARCH ESO ISS PBL13 END | 129.234 |
| HIERARCH ESO ISS PBLA13 START | 94.3 |
| HIERARCH ESO ISS PBLA13 END | 95.8 |
| HIERARCH ESO ISS PBL14 START | 125.088 |
| HIERARCH ESO ISS PBL14 END | 124.686 |
| HIERARCH ESO ISS PBLA14 START | 76.501 |
| HIERARCH ESO ISS PBLA14 END | 77.98 |
| HIERARCH ESO ISS PBL23 START | 54.429 |
| HIERARCH ESO ISS PBL23 END | 54.152 |
| HIERARCH ESO ISS PBLA23 START | 62.5 |
| HIERARCH ESO ISS PBLA23 END | 63.9 |
| HIERARCH ESO ISS PBL24 START | 76.105 |
| HIERARCH ESO ISS PBL24 END | 75.708 |
| HIERARCH ESO ISS PBLA24 START | 32.636 |
| HIERARCH ESO ISS PBLA24 END | 33.698 |
| HIERARCH ESO ISS PBL34 START | 39.606 |
| HIERARCH ESO ISS PBL34 END | 39.679 |
| HIERARCH ESO ISS PBLA34 START | 349.487 |
| HIERARCH ESO ISS PBLA34 END | 350.416 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00523 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004101 |
| HIERARCH ESO ISS AMBI TEMP | 12.7 |
| HIERARCH ESO ISS AMBI FWHM START | 0.92 |
| HIERARCH ESO ISS AMBI FWHM END | 0.86 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.525 |
| HIERARCH ESO FT ROBJ DELTA | -604945.554 |