Exposure
- ID
- GRAVI.2024-03-17T04:59:38.221_2
- Header ID
- GRAVI.2024-03-17T04:59:38.221
- Date updated
- 2024-03-17 05:20:40 UTC+0000
- Release date
- 2025-03-17 05:20:40 UTC+0000
- UTC Start
- 2024-03-17 04:59:38.221
- UTC End
- 2024-03-17 05:06:18.221
- MJD Start
- 60386.20808126
- MJD End
- 60386.2127108896
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.011008
- Ambient temperature (°C)
- 16.7
- Seeing (arcsec)
- 0.84
Observation
- ID
- 58777
- Category
- science
- Program ID
- 112.25BY.002
- 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
- 43512
- Name
- AlphaCenA
- RA
- 219.849154166667
- DEC
- -60.8319238888889
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 | 74.7000 | 75.4230 | 76.3000 | 78.0000 |
| A0-J2 | 121.2140 | 121.7520 | 55.5000 | 57.1000 |
| A0-K0 | 127.4600 | 127.5630 | 39.2960 | 40.8620 |
| G1-J2 | 57.8890 | 57.8430 | 28.1000 | 29.5000 |
| G1-K0 | 81.3790 | 81.3150 | 5.7480 | 6.8520 |
| J2-K0 | 35.4890 | 35.7470 | 327.4160 | 328.2660 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.25BY.002 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60386.20808126 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenA |
| HIERARCH ESO INS SOBJ NAME | StarS2 |
| RA | 219.845615 |
| DEC | -60.83177 |
| 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 | 74.7 |
| HIERARCH ESO ISS PBL12 END | 75.423 |
| HIERARCH ESO ISS PBLA12 START | 76.3 |
| HIERARCH ESO ISS PBLA12 END | 78.0 |
| HIERARCH ESO ISS PBL13 START | 121.214 |
| HIERARCH ESO ISS PBL13 END | 121.752 |
| HIERARCH ESO ISS PBLA13 START | 55.5 |
| HIERARCH ESO ISS PBLA13 END | 57.1 |
| HIERARCH ESO ISS PBL14 START | 127.46 |
| HIERARCH ESO ISS PBL14 END | 127.563 |
| HIERARCH ESO ISS PBLA14 START | 39.296 |
| HIERARCH ESO ISS PBLA14 END | 40.862 |
| HIERARCH ESO ISS PBL23 START | 57.889 |
| HIERARCH ESO ISS PBL23 END | 57.843 |
| HIERARCH ESO ISS PBLA23 START | 28.1 |
| HIERARCH ESO ISS PBLA23 END | 29.5 |
| HIERARCH ESO ISS PBL24 START | 81.379 |
| HIERARCH ESO ISS PBL24 END | 81.315 |
| HIERARCH ESO ISS PBLA24 START | 5.748 |
| HIERARCH ESO ISS PBLA24 END | 6.852 |
| HIERARCH ESO ISS PBL34 START | 35.489 |
| HIERARCH ESO ISS PBL34 END | 35.747 |
| HIERARCH ESO ISS PBLA34 START | 327.416 |
| HIERARCH ESO ISS PBLA34 END | 328.266 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.011565 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010451 |
| HIERARCH ESO ISS AMBI TEMP | 16.7 |
| HIERARCH ESO ISS AMBI FWHM START | 0.82 |
| HIERARCH ESO ISS AMBI FWHM END | 0.86 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA |
| HIERARCH ESO FT ROBJ ALPHA | 143923.797 |
| HIERARCH ESO FT ROBJ DELTA | -604954.926 |