Exposure
- ID
- GRAVI.2021-04-02T08:17:18.446_2
- Header ID
- GRAVI.2021-04-02T08:17:18.446
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 08:36:02 UTC+0000
- UTC Start
- 2021-04-02 08:17:18.446
- UTC End
- 2021-04-02 08:22:38.446
- MJD Start
- 59306.34535238
- MJD End
- 59306.3490560837
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0025475
- Ambient temperature (°C)
- 11.93
- Seeing (arcsec)
- 0.98
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 | 43.6080 | 43.2880 | 46.0000 | 46.9000 |
| U1-U3 | 80.0920 | 79.4540 | 54.1000 | 55.0000 |
| U1-U4 | 114.4480 | 113.6840 | 85.6750 | 86.9060 |
| U2-U3 | 37.4200 | 37.1130 | 63.5000 | 64.5000 |
| U2-U4 | 85.5420 | 85.2290 | 104.6660 | 105.9790 |
| U3-U4 | 62.4470 | 62.4610 | 127.9060 | 129.1510 |
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 | 59306.34535238 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_04_01 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.860435 |
| DEC | -60.8305 |
| 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 | 43.608 |
| HIERARCH ESO ISS PBL12 END | 43.288 |
| HIERARCH ESO ISS PBLA12 START | 46.0 |
| HIERARCH ESO ISS PBLA12 END | 46.9 |
| HIERARCH ESO ISS PBL13 START | 80.092 |
| HIERARCH ESO ISS PBL13 END | 79.454 |
| HIERARCH ESO ISS PBLA13 START | 54.1 |
| HIERARCH ESO ISS PBLA13 END | 55.0 |
| HIERARCH ESO ISS PBL14 START | 114.448 |
| HIERARCH ESO ISS PBL14 END | 113.684 |
| HIERARCH ESO ISS PBLA14 START | 85.675 |
| HIERARCH ESO ISS PBLA14 END | 86.906 |
| HIERARCH ESO ISS PBL23 START | 37.42 |
| HIERARCH ESO ISS PBL23 END | 37.113 |
| HIERARCH ESO ISS PBLA23 START | 63.5 |
| HIERARCH ESO ISS PBLA23 END | 64.5 |
| HIERARCH ESO ISS PBL24 START | 85.542 |
| HIERARCH ESO ISS PBL24 END | 85.229 |
| HIERARCH ESO ISS PBLA24 START | 104.666 |
| HIERARCH ESO ISS PBLA24 END | 105.979 |
| HIERARCH ESO ISS PBL34 START | 62.447 |
| HIERARCH ESO ISS PBL34 END | 62.461 |
| HIERARCH ESO ISS PBLA34 START | 127.906 |
| HIERARCH ESO ISS PBLA34 END | 129.151 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00252 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002575 |
| HIERARCH ESO ISS AMBI TEMP | 11.93 |
| HIERARCH ESO ISS AMBI FWHM START | 0.95 |
| HIERARCH ESO ISS AMBI FWHM END | 1.01 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_04_01 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.279 |
| HIERARCH ESO FT ROBJ DELTA | -604949.817 |