Exposure
- ID
- GRAVI.2022-04-28T04:14:17.984_2
- Header ID
- GRAVI.2022-04-28T04:14:17.984
- Date updated
- 2022-04-28 04:36:47 UTC+0000
- Release date
- 2023-04-28 04:36:46 UTC+0000
- UTC Start
- 2022-04-28 04:14:17.984
- UTC End
- 2022-04-28 04:20:57.984
- MJD Start
- 59697.17659704
- MJD End
- 59697.1812266696
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0033815
- Ambient temperature (°C)
- 13.82
- Seeing (arcsec)
- 0.815
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 | 21.4670 | 21.6190 | 129.0000 | 130.2000 |
| A0-D0 | 31.8230 | 31.7750 | 65.2000 | 66.7000 |
| A0-C1 | 21.2390 | 21.3500 | 102.3680 | 103.8240 |
| B2-D0 | 29.4940 | 29.3880 | 24.4000 | 25.5000 |
| B2-C1 | 9.8230 | 9.7880 | 24.3750 | 25.4600 |
| D0-C1 | 19.6710 | 19.6010 | 204.4420 | 205.5270 |
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 | 59697.17659704 |
| 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 | 21.467 |
| HIERARCH ESO ISS PBL12 END | 21.619 |
| HIERARCH ESO ISS PBLA12 START | 129.0 |
| HIERARCH ESO ISS PBLA12 END | 130.2 |
| HIERARCH ESO ISS PBL13 START | 31.823 |
| HIERARCH ESO ISS PBL13 END | 31.775 |
| HIERARCH ESO ISS PBLA13 START | 65.2 |
| HIERARCH ESO ISS PBLA13 END | 66.7 |
| HIERARCH ESO ISS PBL14 START | 21.239 |
| HIERARCH ESO ISS PBL14 END | 21.35 |
| HIERARCH ESO ISS PBLA14 START | 102.368 |
| HIERARCH ESO ISS PBLA14 END | 103.824 |
| HIERARCH ESO ISS PBL23 START | 29.494 |
| HIERARCH ESO ISS PBL23 END | 29.388 |
| HIERARCH ESO ISS PBLA23 START | 24.4 |
| HIERARCH ESO ISS PBLA23 END | 25.5 |
| HIERARCH ESO ISS PBL24 START | 9.823 |
| HIERARCH ESO ISS PBL24 END | 9.788 |
| HIERARCH ESO ISS PBLA24 START | 24.375 |
| HIERARCH ESO ISS PBLA24 END | 25.46 |
| HIERARCH ESO ISS PBL34 START | 19.671 |
| HIERARCH ESO ISS PBL34 END | 19.601 |
| HIERARCH ESO ISS PBLA34 START | 204.442 |
| HIERARCH ESO ISS PBLA34 END | 205.527 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003094 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003669 |
| HIERARCH ESO ISS AMBI TEMP | 13.82 |
| HIERARCH ESO ISS AMBI FWHM START | 0.87 |
| HIERARCH ESO ISS AMBI FWHM END | 0.76 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA_2022_04_29 |
| HIERARCH ESO FT ROBJ ALPHA | 143924.751 |
| HIERARCH ESO FT ROBJ DELTA | -604955.695 |