Exposure
- ID
- GRAVI.2021-05-20T05:44:06.039_2
- Header ID
- GRAVI.2021-05-20T05:44:06.039
- Date updated
- 2021-09-29 14:27:15 UTC+0000
- Release date
- 2022-05-20 06:01:03 UTC+0000
- UTC Start
- 2021-05-20 05:44:06.039
- UTC End
- 2021-05-20 05:50:46.039
- MJD Start
- 59354.23895879
- MJD End
- 59354.2435884196
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002735
- Ambient temperature (°C)
- 9.88
- Seeing (arcsec)
- 0.89
Observation
- ID
- 47398
- Category
- science
- Program ID
- 106.217D.003
- Program Title
- HIGH PRECISION GRAVITY ASTROMETRY OF THREE STELLAR CONJUNCTIONS OF ALPHA CENTAURI A & B
- Program Type
- Monitoring
- PI / COI
- KERVELLA/ M\XC3\XA9RAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ PERRIN/ ROUSSELET-PERRAUT
Target
- ID
- 35549
- Name
- AlphaCenB_2021_05_17
- RA
- 219.854791666667
- DEC
- -60.8304525
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 B2 D0 C1
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-B2 | 23.8490 | 23.8910 | 159.8000 | 161.1000 |
| A0-D0 | 28.4710 | 28.2590 | 103.9000 | 105.5000 |
| A0-C1 | 22.6110 | 22.6170 | 139.5070 | 141.0070 |
| B2-D0 | 24.8960 | 24.6260 | 51.3000 | 52.3000 |
| B2-C1 | 8.2920 | 8.2030 | 51.2370 | 52.2650 |
| D0-C1 | 16.6030 | 16.4230 | 231.3220 | 232.3520 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 106.217D.003 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 59354.23895879 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_05_17 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.85034 |
| DEC | -60.83043 |
| HIERARCH ESO INS SPEC RES | LOW |
| HIERARCH ESO INS POLA MODE | COMBINED |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | A0 |
| HIERARCH ESO ISS CONF STATION2 | B2 |
| HIERARCH ESO ISS CONF STATION3 | D0 |
| HIERARCH ESO ISS CONF STATION4 | C1 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 23.849 |
| HIERARCH ESO ISS PBL12 END | 23.891 |
| HIERARCH ESO ISS PBLA12 START | 159.8 |
| HIERARCH ESO ISS PBLA12 END | 161.1 |
| HIERARCH ESO ISS PBL13 START | 28.471 |
| HIERARCH ESO ISS PBL13 END | 28.259 |
| HIERARCH ESO ISS PBLA13 START | 103.9 |
| HIERARCH ESO ISS PBLA13 END | 105.5 |
| HIERARCH ESO ISS PBL14 START | 22.611 |
| HIERARCH ESO ISS PBL14 END | 22.617 |
| HIERARCH ESO ISS PBLA14 START | 139.507 |
| HIERARCH ESO ISS PBLA14 END | 141.007 |
| HIERARCH ESO ISS PBL23 START | 24.896 |
| HIERARCH ESO ISS PBL23 END | 24.626 |
| HIERARCH ESO ISS PBLA23 START | 51.3 |
| HIERARCH ESO ISS PBLA23 END | 52.3 |
| HIERARCH ESO ISS PBL24 START | 8.292 |
| HIERARCH ESO ISS PBL24 END | 8.203 |
| HIERARCH ESO ISS PBLA24 START | 51.237 |
| HIERARCH ESO ISS PBLA24 END | 52.265 |
| HIERARCH ESO ISS PBL34 START | 16.603 |
| HIERARCH ESO ISS PBL34 END | 16.423 |
| HIERARCH ESO ISS PBLA34 START | 231.322 |
| HIERARCH ESO ISS PBLA34 END | 232.352 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00262 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00285 |
| HIERARCH ESO ISS AMBI TEMP | 9.88 |
| HIERARCH ESO ISS AMBI FWHM START | 0.93 |
| HIERARCH ESO ISS AMBI FWHM END | 0.85 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_05_17 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.150 |
| HIERARCH ESO FT ROBJ DELTA | -604949.629 |