Exposure
- ID
- GRAVI.2021-04-02T07:07:09.269_2
- Header ID
- GRAVI.2021-04-02T07:07:09.269
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 07:25:52 UTC+0000
- UTC Start
- 2021-04-02 07:07:09.269
- UTC End
- 2021-04-02 07:12:29.269
- MJD Start
- 59306.29663506
- MJD End
- 59306.3003387637
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0025915
- Ambient temperature (°C)
- 12.05
- Seeing (arcsec)
- 1.115
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 | 46.8990 | 46.6700 | 35.4000 | 36.3000 |
| U1-U3 | 86.6930 | 86.2330 | 42.7000 | 43.6000 |
| U1-U4 | 122.2520 | 121.7220 | 71.0570 | 72.2370 |
| U2-U3 | 40.6050 | 40.3830 | 51.1000 | 52.1000 |
| U2-U4 | 88.4480 | 88.2800 | 89.0410 | 90.3030 |
| U3-U4 | 61.7080 | 61.8130 | 112.9120 | 114.1320 |
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 | 59306.29663506 |
| 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 | 46.899 |
| HIERARCH ESO ISS PBL12 END | 46.67 |
| HIERARCH ESO ISS PBLA12 START | 35.4 |
| HIERARCH ESO ISS PBLA12 END | 36.3 |
| HIERARCH ESO ISS PBL13 START | 86.693 |
| HIERARCH ESO ISS PBL13 END | 86.233 |
| HIERARCH ESO ISS PBLA13 START | 42.7 |
| HIERARCH ESO ISS PBLA13 END | 43.6 |
| HIERARCH ESO ISS PBL14 START | 122.252 |
| HIERARCH ESO ISS PBL14 END | 121.722 |
| HIERARCH ESO ISS PBLA14 START | 71.057 |
| HIERARCH ESO ISS PBLA14 END | 72.237 |
| HIERARCH ESO ISS PBL23 START | 40.605 |
| HIERARCH ESO ISS PBL23 END | 40.383 |
| HIERARCH ESO ISS PBLA23 START | 51.1 |
| HIERARCH ESO ISS PBLA23 END | 52.1 |
| HIERARCH ESO ISS PBL24 START | 88.448 |
| HIERARCH ESO ISS PBL24 END | 88.28 |
| HIERARCH ESO ISS PBLA24 START | 89.041 |
| HIERARCH ESO ISS PBLA24 END | 90.303 |
| HIERARCH ESO ISS PBL34 START | 61.708 |
| HIERARCH ESO ISS PBL34 END | 61.813 |
| HIERARCH ESO ISS PBLA34 START | 112.912 |
| HIERARCH ESO ISS PBLA34 END | 114.132 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002664 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002519 |
| HIERARCH ESO ISS AMBI TEMP | 12.05 |
| HIERARCH ESO ISS AMBI FWHM START | 1.15 |
| 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 |