Exposure
- ID
- GRAVI.2025-03-20T08:35:33.179_2
- Header ID
- GRAVI.2025-03-20T08:35:33.179
- Date updated
- 2025-03-20 08:50:54 UTC+0000
- Release date
- 2026-03-20 08:50:53 UTC+0000
- UTC Start
- 2025-03-20 08:35:33.179
- UTC End
- 2025-03-20 08:42:13.179
- MJD Start
- 60754.3580229
- MJD End
- 60754.36265252963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0030455
- Ambient temperature (°C)
- 13.86
- Seeing (arcsec)
- 1.365
Observation
- ID
- 65722
- 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
- 48895
- Name
- AlphaCenB
- RA
- 219.8477583333333
- DEC
- -60.82934361111111
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 | 89.6070 | 89.7530 | 125.0000 | 126.4000 |
| A0-J2 | 128.5000 | 128.2940 | 106.6000 | 108.1000 |
| A0-K0 | 121.0780 | 120.4540 | 88.4410 | 89.9560 |
| G1-J2 | 51.8450 | 51.4640 | 73.5000 | 74.9000 |
| G1-K0 | 72.4490 | 71.9160 | 41.0660 | 42.1070 |
| J2-K0 | 39.9950 | 40.0130 | 356.9510 | 357.8860 |
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 | 60754.3580229 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS4 |
| RA | 219.843244 |
| 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 | 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 | 89.607 |
| HIERARCH ESO ISS PBL12 END | 89.753 |
| HIERARCH ESO ISS PBLA12 START | 125.0 |
| HIERARCH ESO ISS PBLA12 END | 126.4 |
| HIERARCH ESO ISS PBL13 START | 128.5 |
| HIERARCH ESO ISS PBL13 END | 128.294 |
| HIERARCH ESO ISS PBLA13 START | 106.6 |
| HIERARCH ESO ISS PBLA13 END | 108.1 |
| HIERARCH ESO ISS PBL14 START | 121.078 |
| HIERARCH ESO ISS PBL14 END | 120.454 |
| HIERARCH ESO ISS PBLA14 START | 88.441 |
| HIERARCH ESO ISS PBLA14 END | 89.956 |
| HIERARCH ESO ISS PBL23 START | 51.845 |
| HIERARCH ESO ISS PBL23 END | 51.464 |
| HIERARCH ESO ISS PBLA23 START | 73.5 |
| HIERARCH ESO ISS PBLA23 END | 74.9 |
| HIERARCH ESO ISS PBL24 START | 72.449 |
| HIERARCH ESO ISS PBL24 END | 71.916 |
| HIERARCH ESO ISS PBLA24 START | 41.066 |
| HIERARCH ESO ISS PBLA24 END | 42.107 |
| HIERARCH ESO ISS PBL34 START | 39.995 |
| HIERARCH ESO ISS PBL34 END | 40.013 |
| HIERARCH ESO ISS PBLA34 START | 356.951 |
| HIERARCH ESO ISS PBLA34 END | 357.886 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00265 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003441 |
| HIERARCH ESO ISS AMBI TEMP | 13.86 |
| HIERARCH ESO ISS AMBI FWHM START | 1.49 |
| HIERARCH ESO ISS AMBI FWHM END | 1.24 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.462 |
| HIERARCH ESO FT ROBJ DELTA | -604945.637 |