Exposure
- ID
- GRAVI.2024-02-27T07:33:04.237_2
- Header ID
- GRAVI.2024-02-27T07:33:04.237
- Date updated
- 2024-02-27 08:27:10 UTC+0000
- Release date
- 2025-02-27 08:27:10 UTC+0000
- UTC Start
- 2024-02-27 07:33:04.237
- UTC End
- 2024-02-27 07:39:44.237
- MJD Start
- 60367.31463237
- MJD End
- 60367.3192619996
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.009077
- Ambient temperature (°C)
- 14.59
- Seeing (arcsec)
- 0.565
Observation
- ID
- 58531
- Category
- science
- Program ID
- 112.25BY.001
- Program Title
- GRAVITY ASTROMETRY OF STELLAR CONJUNCTIONS OF ALPHA CEN FOR STELLAR PHYSICS AND EXOPLANETS
- Program Type
- Normal
- PI / COI
- KERVELLA/ MÉRAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ ROUSSELET-PERRAUT/ PERRIN
Target
- ID
- 43330
- Name
- AlphaCenB
- RA
- 219.849970833333
- DEC
- -60.8296177777778
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- U1 U2 U3 U4
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 49.9820 | 49.8560 | 18.3000 | 19.4000 |
| U1-U3 | 93.0210 | 92.7530 | 24.4000 | 25.6000 |
| U1-U4 | 128.7600 | 128.5370 | 48.4220 | 49.8480 |
| U2-U3 | 43.6540 | 43.5250 | 31.5000 | 32.7000 |
| U2-U4 | 89.1470 | 89.2340 | 64.7760 | 66.3130 |
| U3-U4 | 57.8760 | 58.2150 | 89.2590 | 90.7700 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.25BY.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60367.31463237 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB |
| HIERARCH ESO INS SOBJ NAME | StarS3 |
| RA | 219.850593 |
| DEC | -60.83028 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | U1 |
| HIERARCH ESO ISS CONF STATION2 | U2 |
| HIERARCH ESO ISS CONF STATION3 | U3 |
| HIERARCH ESO ISS CONF STATION4 | U4 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 49.982 |
| HIERARCH ESO ISS PBL12 END | 49.856 |
| HIERARCH ESO ISS PBLA12 START | 18.3 |
| HIERARCH ESO ISS PBLA12 END | 19.4 |
| HIERARCH ESO ISS PBL13 START | 93.021 |
| HIERARCH ESO ISS PBL13 END | 92.753 |
| HIERARCH ESO ISS PBLA13 START | 24.4 |
| HIERARCH ESO ISS PBLA13 END | 25.6 |
| HIERARCH ESO ISS PBL14 START | 128.76 |
| HIERARCH ESO ISS PBL14 END | 128.537 |
| HIERARCH ESO ISS PBLA14 START | 48.422 |
| HIERARCH ESO ISS PBLA14 END | 49.848 |
| HIERARCH ESO ISS PBL23 START | 43.654 |
| HIERARCH ESO ISS PBL23 END | 43.525 |
| HIERARCH ESO ISS PBLA23 START | 31.5 |
| HIERARCH ESO ISS PBLA23 END | 32.7 |
| HIERARCH ESO ISS PBL24 START | 89.147 |
| HIERARCH ESO ISS PBL24 END | 89.234 |
| HIERARCH ESO ISS PBLA24 START | 64.776 |
| HIERARCH ESO ISS PBLA24 END | 66.313 |
| HIERARCH ESO ISS PBL34 START | 57.876 |
| HIERARCH ESO ISS PBL34 END | 58.215 |
| HIERARCH ESO ISS PBLA34 START | 89.259 |
| HIERARCH ESO ISS PBLA34 END | 90.77 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.009444 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00871 |
| HIERARCH ESO ISS AMBI TEMP | 14.59 |
| HIERARCH ESO ISS AMBI FWHM START | 0.52 |
| HIERARCH ESO ISS AMBI FWHM END | 0.61 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB |
| HIERARCH ESO FT ROBJ ALPHA | 143923.993 |
| HIERARCH ESO FT ROBJ DELTA | -604946.624 |