Exposure
- ID
- GRAVI.2021-05-22T23:58:37.431_2
- Header ID
- GRAVI.2021-05-22T23:58:37.431
- Date updated
- 2021-09-29 14:27:19 UTC+0000
- Release date
- 2022-05-23 00:12:03 UTC+0000
- UTC Start
- 2021-05-22 23:58:37.431
- UTC End
- 2021-05-23 00:03:57.431
- MJD Start
- 59356.99904434
- MJD End
- 59357.0027480437
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.00535
- Ambient temperature (°C)
- 11.9
- Seeing (arcsec)
- 0.46
Observation
- ID
- 47438
- 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
- 35578
- Name
- AlphaCenB_2021_05_22
- RA
- 219.854720833333
- DEC
- -60.8304391666667
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 | 50.9690 | 50.9690 | 359.6000 | 0.5000 |
| U1-U3 | 95.5030 | 95.4640 | 4.5000 | 5.4000 |
| U1-U4 | 130.2090 | 130.2050 | 23.5040 | 24.7550 |
| U2-U3 | 44.9290 | 44.9010 | 10.0000 | 11.1000 |
| U2-U4 | 86.1380 | 86.3160 | 37.3880 | 38.7940 |
| U3-U4 | 50.6570 | 51.0480 | 61.4710 | 62.9590 |
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 | 59356.99904434 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO INS SOBJ NAME | StarS1 |
| RA | 219.859958 |
| DEC | -60.83039 |
| 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 | 50.969 |
| HIERARCH ESO ISS PBL12 END | 50.969 |
| HIERARCH ESO ISS PBLA12 START | 359.6 |
| HIERARCH ESO ISS PBLA12 END | 0.5 |
| HIERARCH ESO ISS PBL13 START | 95.503 |
| HIERARCH ESO ISS PBL13 END | 95.464 |
| HIERARCH ESO ISS PBLA13 START | 4.5 |
| HIERARCH ESO ISS PBLA13 END | 5.4 |
| HIERARCH ESO ISS PBL14 START | 130.209 |
| HIERARCH ESO ISS PBL14 END | 130.205 |
| HIERARCH ESO ISS PBLA14 START | 23.504 |
| HIERARCH ESO ISS PBLA14 END | 24.755 |
| HIERARCH ESO ISS PBL23 START | 44.929 |
| HIERARCH ESO ISS PBL23 END | 44.901 |
| HIERARCH ESO ISS PBLA23 START | 10.0 |
| HIERARCH ESO ISS PBLA23 END | 11.1 |
| HIERARCH ESO ISS PBL24 START | 86.138 |
| HIERARCH ESO ISS PBL24 END | 86.316 |
| HIERARCH ESO ISS PBLA24 START | 37.388 |
| HIERARCH ESO ISS PBLA24 END | 38.794 |
| HIERARCH ESO ISS PBL34 START | 50.657 |
| HIERARCH ESO ISS PBL34 END | 51.048 |
| HIERARCH ESO ISS PBLA34 START | 61.471 |
| HIERARCH ESO ISS PBLA34 END | 62.959 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004891 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005809 |
| HIERARCH ESO ISS AMBI TEMP | 11.9 |
| HIERARCH ESO ISS AMBI FWHM START | 0.48 |
| HIERARCH ESO ISS AMBI FWHM END | 0.44 |
| HIERARCH ESO FT ROBJ NAME | AlphaCenB_2021_05_22 |
| HIERARCH ESO FT ROBJ ALPHA | 143925.133 |
| HIERARCH ESO FT ROBJ DELTA | -604949.581 |