Exposure
- ID
- GRAVI.2022-04-28T03:41:53.903_2
- Header ID
- GRAVI.2022-04-28T03:41:53.903
- Date updated
- 2022-04-28 04:01:25 UTC+0000
- Release date
- 2023-04-28 04:01:25 UTC+0000
- UTC Start
- 2022-04-28 03:41:53.903
- UTC End
- 2022-04-28 03:48:33.903
- MJD Start
- 59697.1540961
- MJD End
- 59697.1587257296
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0039325
- Ambient temperature (°C)
- 13.78
- Seeing (arcsec)
- 0.715
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 | 20.6910 | 20.8680 | 123.4000 | 124.6000 |
| A0-D0 | 31.9710 | 31.9500 | 58.2000 | 59.7000 |
| A0-C1 | 20.6610 | 20.7940 | 95.5240 | 97.0050 |
| B2-D0 | 29.9150 | 29.8340 | 19.3000 | 20.4000 |
| B2-C1 | 9.9630 | 9.9360 | 19.3040 | 20.3970 |
| D0-C1 | 19.9520 | 19.8980 | 199.3680 | 200.4610 |
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 | 59697.1540961 |
| 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 | 20.691 |
| HIERARCH ESO ISS PBL12 END | 20.868 |
| HIERARCH ESO ISS PBLA12 START | 123.4 |
| HIERARCH ESO ISS PBLA12 END | 124.6 |
| HIERARCH ESO ISS PBL13 START | 31.971 |
| HIERARCH ESO ISS PBL13 END | 31.95 |
| HIERARCH ESO ISS PBLA13 START | 58.2 |
| HIERARCH ESO ISS PBLA13 END | 59.7 |
| HIERARCH ESO ISS PBL14 START | 20.661 |
| HIERARCH ESO ISS PBL14 END | 20.794 |
| HIERARCH ESO ISS PBLA14 START | 95.524 |
| HIERARCH ESO ISS PBLA14 END | 97.005 |
| HIERARCH ESO ISS PBL23 START | 29.915 |
| HIERARCH ESO ISS PBL23 END | 29.834 |
| HIERARCH ESO ISS PBLA23 START | 19.3 |
| HIERARCH ESO ISS PBLA23 END | 20.4 |
| HIERARCH ESO ISS PBL24 START | 9.963 |
| HIERARCH ESO ISS PBL24 END | 9.936 |
| HIERARCH ESO ISS PBLA24 START | 19.304 |
| HIERARCH ESO ISS PBLA24 END | 20.397 |
| HIERARCH ESO ISS PBL34 START | 19.952 |
| HIERARCH ESO ISS PBL34 END | 19.898 |
| HIERARCH ESO ISS PBLA34 START | 199.368 |
| HIERARCH ESO ISS PBLA34 END | 200.461 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004117 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003748 |
| HIERARCH ESO ISS AMBI TEMP | 13.78 |
| HIERARCH ESO ISS AMBI FWHM START | 0.65 |
| HIERARCH ESO ISS AMBI FWHM END | 0.78 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA_2022_04_29 |
| HIERARCH ESO FT ROBJ ALPHA | 143924.751 |
| HIERARCH ESO FT ROBJ DELTA | -604955.695 |