Exposure
- ID
- GRAVI.2021-05-23T01:41:19.690_2
- Header ID
- GRAVI.2021-05-23T01:41:19.690
- Date updated
- 2021-09-29 14:27:19 UTC+0000
- Release date
- 2022-05-23 01:55:20 UTC+0000
- UTC Start
- 2021-05-23 01:41:19.690
- UTC End
- 2021-05-23 01:46:39.690
- MJD Start
- 59357.07036678
- MJD End
- 59357.0740704837
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0075215
- Ambient temperature (°C)
- 11.76
- Seeing (arcsec)
- 0.45
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 | 50.2240 | 50.1340 | 16.0000 | 16.9000 |
| U1-U3 | 93.5410 | 93.3450 | 22.0000 | 22.9000 |
| U1-U4 | 129.1660 | 129.0160 | 45.4090 | 46.6010 |
| U2-U3 | 43.9060 | 43.8110 | 28.8000 | 29.9000 |
| U2-U4 | 88.9170 | 89.0150 | 61.5220 | 62.8100 |
| U3-U4 | 57.1230 | 57.4260 | 86.0520 | 87.3240 |
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 | 59357.07036678 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.860003 |
| DEC | -60.83037 |
| 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 | 50.224 |
| HIERARCH ESO ISS PBL12 END | 50.134 |
| HIERARCH ESO ISS PBLA12 START | 16.0 |
| HIERARCH ESO ISS PBLA12 END | 16.9 |
| HIERARCH ESO ISS PBL13 START | 93.541 |
| HIERARCH ESO ISS PBL13 END | 93.345 |
| HIERARCH ESO ISS PBLA13 START | 22.0 |
| HIERARCH ESO ISS PBLA13 END | 22.9 |
| HIERARCH ESO ISS PBL14 START | 129.166 |
| HIERARCH ESO ISS PBL14 END | 129.016 |
| HIERARCH ESO ISS PBLA14 START | 45.409 |
| HIERARCH ESO ISS PBLA14 END | 46.601 |
| HIERARCH ESO ISS PBL23 START | 43.906 |
| HIERARCH ESO ISS PBL23 END | 43.811 |
| HIERARCH ESO ISS PBLA23 START | 28.8 |
| HIERARCH ESO ISS PBLA23 END | 29.9 |
| HIERARCH ESO ISS PBL24 START | 88.917 |
| HIERARCH ESO ISS PBL24 END | 89.015 |
| HIERARCH ESO ISS PBLA24 START | 61.522 |
| HIERARCH ESO ISS PBLA24 END | 62.81 |
| HIERARCH ESO ISS PBL34 START | 57.123 |
| HIERARCH ESO ISS PBL34 END | 57.426 |
| HIERARCH ESO ISS PBLA34 START | 86.052 |
| HIERARCH ESO ISS PBLA34 END | 87.324 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.007151 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.007892 |
| HIERARCH ESO ISS AMBI TEMP | 11.76 |
| HIERARCH ESO ISS AMBI FWHM START | 0.45 |
| HIERARCH ESO ISS AMBI FWHM END | 0.45 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.133 |
| HIERARCH ESO FT ROBJ DELTA | -604949.581 |