Exposure
- ID
- GRAVI.2022-04-28T03:49:11.922_2
- Header ID
- GRAVI.2022-04-28T03:49:11.922
- Date updated
- 2022-04-28 04:05:59 UTC+0000
- Release date
- 2023-04-28 04:05:59 UTC+0000
- UTC Start
- 2022-04-28 03:49:11.922
- UTC End
- 2022-04-28 03:55:51.922
- MJD Start
- 59697.15916576
- MJD End
- 59697.1637953896
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0037405
- Ambient temperature (°C)
- 13.58
- Seeing (arcsec)
- 0.85
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 | 20.8760 | 21.0470 | 124.7000 | 125.9000 |
| A0-D0 | 31.9480 | 31.9210 | 59.8000 | 61.3000 |
| A0-C1 | 20.8010 | 20.9290 | 97.0760 | 98.5500 |
| B2-D0 | 29.8300 | 29.7430 | 20.5000 | 21.6000 |
| B2-C1 | 9.9350 | 9.9060 | 20.4490 | 21.5390 |
| D0-C1 | 19.8950 | 19.8380 | 200.5130 | 201.6040 |
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 | 59697.15916576 |
| 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 | 20.876 |
| HIERARCH ESO ISS PBL12 END | 21.047 |
| HIERARCH ESO ISS PBLA12 START | 124.7 |
| HIERARCH ESO ISS PBLA12 END | 125.9 |
| HIERARCH ESO ISS PBL13 START | 31.948 |
| HIERARCH ESO ISS PBL13 END | 31.921 |
| HIERARCH ESO ISS PBLA13 START | 59.8 |
| HIERARCH ESO ISS PBLA13 END | 61.3 |
| HIERARCH ESO ISS PBL14 START | 20.801 |
| HIERARCH ESO ISS PBL14 END | 20.929 |
| HIERARCH ESO ISS PBLA14 START | 97.076 |
| HIERARCH ESO ISS PBLA14 END | 98.55 |
| HIERARCH ESO ISS PBL23 START | 29.83 |
| HIERARCH ESO ISS PBL23 END | 29.743 |
| HIERARCH ESO ISS PBLA23 START | 20.5 |
| HIERARCH ESO ISS PBLA23 END | 21.6 |
| HIERARCH ESO ISS PBL24 START | 9.935 |
| HIERARCH ESO ISS PBL24 END | 9.906 |
| HIERARCH ESO ISS PBLA24 START | 20.449 |
| HIERARCH ESO ISS PBLA24 END | 21.539 |
| HIERARCH ESO ISS PBL34 START | 19.895 |
| HIERARCH ESO ISS PBL34 END | 19.838 |
| HIERARCH ESO ISS PBLA34 START | 200.513 |
| HIERARCH ESO ISS PBLA34 END | 201.604 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003748 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003733 |
| HIERARCH ESO ISS AMBI TEMP | 13.58 |
| HIERARCH ESO ISS AMBI FWHM START | 0.78 |
| HIERARCH ESO ISS AMBI FWHM END | 0.92 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenA_2022_04_29 |
| HIERARCH ESO FT ROBJ ALPHA | 143924.751 |
| HIERARCH ESO FT ROBJ DELTA | -604955.695 |