Exposure
- ID
- GRAVI.2022-04-28T04:57:33.094_2
- Header ID
- GRAVI.2022-04-28T04:57:33.094
- Date updated
- 2022-04-28 05:15:41 UTC+0000
- Release date
- 2023-04-28 05:15:41 UTC+0000
- UTC Start
- 2022-04-28 04:57:33.094
- UTC End
- 2022-04-28 05:04:13.094
- MJD Start
- 59697.20663303
- MJD End
- 59697.2112626596
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004133
- Ambient temperature (°C)
- 14.32
- Seeing (arcsec)
- 0.62
Observation
- ID
- 50675
- Category
- science
- Program ID
- 106.217D.008
- Program Title
- HIGH PRECISION GRAVITY ASTROMETRY OF THREE STELLAR CONJUNCTIONS OF ALPHA CENTAURI A & B
- Program Type
- Monitoring
- PI / COI
- KERVELLA/ MÉRAND/ LACOUR/ FORVEILLE/ ARENOU/ THEVENIN/ BRANDNER/ STRAUBMEIER/ GARCIA/ WOILLEZ/ EISENHAUER/ PAUMARD/ PERRIN/ ROUSSELET-PERRAUT
Target
- ID
- 37818
- Name
- AlphaCenA_2022_04_29
- RA
- 219.853129166667
- DEC
- -60.8321375
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 B2 D0 C1
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-B2 | 22.3220 | 22.4410 | 136.4000 | 137.6000 |
| A0-D0 | 31.4130 | 31.3220 | 74.4000 | 75.9000 |
| A0-C1 | 21.8420 | 21.9200 | 111.3620 | 112.8000 |
| B2-D0 | 28.7480 | 28.6080 | 31.1000 | 32.2000 |
| B2-C1 | 9.5750 | 9.5280 | 31.0670 | 32.1330 |
| D0-C1 | 19.1730 | 19.0800 | 211.1380 | 212.2040 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 106.217D.008 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 59697.20663303 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenA_2022_04_29 |
| HIERARCH ESO INS SOBJ NAME | StarS2 |
| RA | 219.847606 |
| DEC | -60.83188 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | A0 |
| HIERARCH ESO ISS CONF STATION2 | B2 |
| HIERARCH ESO ISS CONF STATION3 | D0 |
| HIERARCH ESO ISS CONF STATION4 | C1 |
| EXPTIME | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 22.322 |
| HIERARCH ESO ISS PBL12 END | 22.441 |
| HIERARCH ESO ISS PBLA12 START | 136.4 |
| HIERARCH ESO ISS PBLA12 END | 137.6 |
| HIERARCH ESO ISS PBL13 START | 31.413 |
| HIERARCH ESO ISS PBL13 END | 31.322 |
| HIERARCH ESO ISS PBLA13 START | 74.4 |
| HIERARCH ESO ISS PBLA13 END | 75.9 |
| HIERARCH ESO ISS PBL14 START | 21.842 |
| HIERARCH ESO ISS PBL14 END | 21.92 |
| HIERARCH ESO ISS PBLA14 START | 111.362 |
| HIERARCH ESO ISS PBLA14 END | 112.8 |
| HIERARCH ESO ISS PBL23 START | 28.748 |
| HIERARCH ESO ISS PBL23 END | 28.608 |
| HIERARCH ESO ISS PBLA23 START | 31.1 |
| HIERARCH ESO ISS PBLA23 END | 32.2 |
| HIERARCH ESO ISS PBL24 START | 9.575 |
| HIERARCH ESO ISS PBL24 END | 9.528 |
| HIERARCH ESO ISS PBLA24 START | 31.067 |
| HIERARCH ESO ISS PBLA24 END | 32.133 |
| HIERARCH ESO ISS PBL34 START | 19.173 |
| HIERARCH ESO ISS PBL34 END | 19.08 |
| HIERARCH ESO ISS PBLA34 START | 211.138 |
| HIERARCH ESO ISS PBLA34 END | 212.204 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004154 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004112 |
| HIERARCH ESO ISS AMBI TEMP | 14.32 |
| HIERARCH ESO ISS AMBI FWHM START | 0.58 |
| HIERARCH ESO ISS AMBI FWHM END | 0.66 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA_2022_04_29 |
| HIERARCH ESO FT ROBJ ALPHA | 143924.751 |
| HIERARCH ESO FT ROBJ DELTA | -604955.695 |