Exposure
- ID
- GRAVI.2021-04-02T08:11:12.430_2
- Header ID
- GRAVI.2021-04-02T08:11:12.430
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 08:25:21 UTC+0000
- UTC Start
- 2021-04-02 08:11:12.430
- UTC End
- 2021-04-02 08:16:32.430
- MJD Start
- 59306.34111609
- MJD End
- 59306.3448197937
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0026765
- Ambient temperature (°C)
- 11.8
- Seeing (arcsec)
- 1.095
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 | 43.9410 | 43.6300 | 45.1000 | 45.9000 |
| U1-U3 | 80.7570 | 80.1360 | 53.1000 | 54.0000 |
| U1-U4 | 115.2450 | 114.5010 | 84.3670 | 85.5890 |
| U2-U3 | 37.7410 | 37.4410 | 62.4000 | 63.4000 |
| U2-U4 | 85.8650 | 85.5630 | 103.2690 | 104.5750 |
| U3-U4 | 62.4250 | 62.4450 | 126.5780 | 127.8190 |
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 | 59306.34111609 |
| 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 | 43.941 |
| HIERARCH ESO ISS PBL12 END | 43.63 |
| HIERARCH ESO ISS PBLA12 START | 45.1 |
| HIERARCH ESO ISS PBLA12 END | 45.9 |
| HIERARCH ESO ISS PBL13 START | 80.757 |
| HIERARCH ESO ISS PBL13 END | 80.136 |
| HIERARCH ESO ISS PBLA13 START | 53.1 |
| HIERARCH ESO ISS PBLA13 END | 54.0 |
| HIERARCH ESO ISS PBL14 START | 115.245 |
| HIERARCH ESO ISS PBL14 END | 114.501 |
| HIERARCH ESO ISS PBLA14 START | 84.367 |
| HIERARCH ESO ISS PBLA14 END | 85.589 |
| HIERARCH ESO ISS PBL23 START | 37.741 |
| HIERARCH ESO ISS PBL23 END | 37.441 |
| HIERARCH ESO ISS PBLA23 START | 62.4 |
| HIERARCH ESO ISS PBLA23 END | 63.4 |
| HIERARCH ESO ISS PBL24 START | 85.865 |
| HIERARCH ESO ISS PBL24 END | 85.563 |
| HIERARCH ESO ISS PBLA24 START | 103.269 |
| HIERARCH ESO ISS PBLA24 END | 104.575 |
| HIERARCH ESO ISS PBL34 START | 62.425 |
| HIERARCH ESO ISS PBL34 END | 62.445 |
| HIERARCH ESO ISS PBLA34 START | 126.578 |
| HIERARCH ESO ISS PBLA34 END | 127.819 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002833 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00252 |
| HIERARCH ESO ISS AMBI TEMP | 11.8 |
| HIERARCH ESO ISS AMBI FWHM START | 1.24 |
| HIERARCH ESO ISS AMBI FWHM END | 0.95 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_04_01 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.279 |
| HIERARCH ESO FT ROBJ DELTA | -604949.817 |