Exposure
- ID
- GRAVI.2021-04-02T07:13:18.284_2
- Header ID
- GRAVI.2021-04-02T07:13:18.284
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 07:30:19 UTC+0000
- UTC Start
- 2021-04-02 07:13:18.284
- UTC End
- 2021-04-02 07:18:38.284
- MJD Start
- 59306.30090607
- MJD End
- 59306.3046097737
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002394
- Ambient temperature (°C)
- 12.05
- Seeing (arcsec)
- 1.08
Observation
- ID
- 47375
- Category
- science
- Program ID
- 106.217D.002
- 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
- 35533
- Name
- AlphaCenB_2021_04_01
- RA
- 219.855329166667
- DEC
- -60.8305047222222
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 | 46.6550 | 46.4210 | 36.4000 | 37.2000 |
| U1-U3 | 86.2030 | 85.7300 | 43.7000 | 44.6000 |
| U1-U4 | 121.6870 | 121.1390 | 72.3130 | 73.4890 |
| U2-U3 | 40.3690 | 40.1400 | 52.2000 | 53.2000 |
| U2-U4 | 88.2680 | 88.0870 | 90.3840 | 91.6410 |
| U3-U4 | 61.8200 | 61.9160 | 114.2090 | 115.4310 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 106.217D.002 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 59306.30090607 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_04_01 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.860366 |
| DEC | -60.83046 |
| 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 | 342.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 10.0 |
| HIERARCH ESO DET2 NDIT | 32 |
| HIERARCH ESO ISS PBL12 START | 46.655 |
| HIERARCH ESO ISS PBL12 END | 46.421 |
| HIERARCH ESO ISS PBLA12 START | 36.4 |
| HIERARCH ESO ISS PBLA12 END | 37.2 |
| HIERARCH ESO ISS PBL13 START | 86.203 |
| HIERARCH ESO ISS PBL13 END | 85.73 |
| HIERARCH ESO ISS PBLA13 START | 43.7 |
| HIERARCH ESO ISS PBLA13 END | 44.6 |
| HIERARCH ESO ISS PBL14 START | 121.687 |
| HIERARCH ESO ISS PBL14 END | 121.139 |
| HIERARCH ESO ISS PBLA14 START | 72.313 |
| HIERARCH ESO ISS PBLA14 END | 73.489 |
| HIERARCH ESO ISS PBL23 START | 40.369 |
| HIERARCH ESO ISS PBL23 END | 40.14 |
| HIERARCH ESO ISS PBLA23 START | 52.2 |
| HIERARCH ESO ISS PBLA23 END | 53.2 |
| HIERARCH ESO ISS PBL24 START | 88.268 |
| HIERARCH ESO ISS PBL24 END | 88.087 |
| HIERARCH ESO ISS PBLA24 START | 90.384 |
| HIERARCH ESO ISS PBLA24 END | 91.641 |
| HIERARCH ESO ISS PBL34 START | 61.82 |
| HIERARCH ESO ISS PBL34 END | 61.916 |
| HIERARCH ESO ISS PBLA34 START | 114.209 |
| HIERARCH ESO ISS PBLA34 END | 115.431 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002473 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002315 |
| HIERARCH ESO ISS AMBI TEMP | 12.05 |
| HIERARCH ESO ISS AMBI FWHM START | 1.08 |
| HIERARCH ESO ISS AMBI FWHM END | 1.08 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_04_01 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.279 |
| HIERARCH ESO FT ROBJ DELTA | -604949.817 |