Exposure
- ID
- GRAVI.2021-05-23T00:17:25.478_2
- Header ID
- GRAVI.2021-05-23T00:17:25.478
- Date updated
- 2021-09-29 14:27:19 UTC+0000
- Release date
- 2022-05-23 00:35:25 UTC+0000
- UTC Start
- 2021-05-23 00:17:25.478
- UTC End
- 2021-05-23 00:22:45.478
- MJD Start
- 59357.01210044
- MJD End
- 59357.0158041437
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0087035
- Ambient temperature (°C)
- 11.81
- Seeing (arcsec)
- 0.505
Observation
- ID
- 47438
- 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
- 35578
- Name
- AlphaCenB_2021_05_22
- RA
- 219.854720833333
- DEC
- -60.8304391666667
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 | 50.9510 | 50.9350 | 2.6000 | 3.5000 |
| U1-U3 | 95.3460 | 95.2810 | 7.7000 | 8.7000 |
| U1-U4 | 130.1810 | 130.1640 | 27.5880 | 28.8290 |
| U2-U3 | 44.8260 | 44.7880 | 13.5000 | 14.5000 |
| U2-U4 | 86.7220 | 86.8990 | 41.9640 | 43.3470 |
| U3-U4 | 51.9330 | 52.3190 | 66.2810 | 67.7160 |
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 | 59357.01210044 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.859958 |
| DEC | -60.83039 |
| 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 | 50.951 |
| HIERARCH ESO ISS PBL12 END | 50.935 |
| HIERARCH ESO ISS PBLA12 START | 2.6 |
| HIERARCH ESO ISS PBLA12 END | 3.5 |
| HIERARCH ESO ISS PBL13 START | 95.346 |
| HIERARCH ESO ISS PBL13 END | 95.281 |
| HIERARCH ESO ISS PBLA13 START | 7.7 |
| HIERARCH ESO ISS PBLA13 END | 8.7 |
| HIERARCH ESO ISS PBL14 START | 130.181 |
| HIERARCH ESO ISS PBL14 END | 130.164 |
| HIERARCH ESO ISS PBLA14 START | 27.588 |
| HIERARCH ESO ISS PBLA14 END | 28.829 |
| HIERARCH ESO ISS PBL23 START | 44.826 |
| HIERARCH ESO ISS PBL23 END | 44.788 |
| HIERARCH ESO ISS PBLA23 START | 13.5 |
| HIERARCH ESO ISS PBLA23 END | 14.5 |
| HIERARCH ESO ISS PBL24 START | 86.722 |
| HIERARCH ESO ISS PBL24 END | 86.899 |
| HIERARCH ESO ISS PBLA24 START | 41.964 |
| HIERARCH ESO ISS PBLA24 END | 43.347 |
| HIERARCH ESO ISS PBL34 START | 51.933 |
| HIERARCH ESO ISS PBL34 END | 52.319 |
| HIERARCH ESO ISS PBLA34 START | 66.281 |
| HIERARCH ESO ISS PBLA34 END | 67.716 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00867 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.008737 |
| HIERARCH ESO ISS AMBI TEMP | 11.81 |
| HIERARCH ESO ISS AMBI FWHM START | 0.48 |
| HIERARCH ESO ISS AMBI FWHM END | 0.53 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.133 |
| HIERARCH ESO FT ROBJ DELTA | -604949.581 |