Exposure
- ID
- GRAVI.2021-05-22T23:08:46.305_2
- Header ID
- GRAVI.2021-05-22T23:08:46.305
- Date updated
- 2021-09-29 14:27:18 UTC+0000
- Release date
- 2022-05-22 23:20:25 UTC+0000
- UTC Start
- 2021-05-22 23:08:46.305
- UTC End
- 2021-05-22 23:09:50.305
- MJD Start
- 59356.96442483
- MJD End
- 59356.9651655707
- Exposure time (s)
- 64.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.007768
- Ambient temperature (°C)
- 11.98
- Seeing (arcsec)
- 0.5
Observation
- ID
- 47377
- 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
- 33278
- Name
- WDSJ14077-4952A
- RA
- 211.923029166667
- DEC
- -49.8676194444444
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 | 54.6760 | 54.6800 | 356.9000 | 357.2000 |
| U1-U3 | 100.8350 | 100.8330 | 1.3000 | 1.5000 |
| U1-U4 | 127.8590 | 127.8960 | 19.9300 | 20.2680 |
| U2-U3 | 46.5050 | 46.5030 | 6.4000 | 6.7000 |
| U2-U4 | 80.4270 | 80.5250 | 35.3400 | 35.7320 |
| U3-U4 | 45.6360 | 45.8030 | 64.8520 | 65.2430 |
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 | 59356.96442483 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 123227 |
| HIERARCH ESO INS SOBJ NAME | WDSJ14077-4952B |
| RA | 211.925981 |
| DEC | -49.86695 |
| 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 | 94.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 1.0 |
| HIERARCH ESO DET2 NDIT | 64 |
| HIERARCH ESO ISS PBL12 START | 54.676 |
| HIERARCH ESO ISS PBL12 END | 54.68 |
| HIERARCH ESO ISS PBLA12 START | 356.9 |
| HIERARCH ESO ISS PBLA12 END | 357.2 |
| HIERARCH ESO ISS PBL13 START | 100.835 |
| HIERARCH ESO ISS PBL13 END | 100.833 |
| HIERARCH ESO ISS PBLA13 START | 1.3 |
| HIERARCH ESO ISS PBLA13 END | 1.5 |
| HIERARCH ESO ISS PBL14 START | 127.859 |
| HIERARCH ESO ISS PBL14 END | 127.896 |
| HIERARCH ESO ISS PBLA14 START | 19.93 |
| HIERARCH ESO ISS PBLA14 END | 20.268 |
| HIERARCH ESO ISS PBL23 START | 46.505 |
| HIERARCH ESO ISS PBL23 END | 46.503 |
| HIERARCH ESO ISS PBLA23 START | 6.4 |
| HIERARCH ESO ISS PBLA23 END | 6.7 |
| HIERARCH ESO ISS PBL24 START | 80.427 |
| HIERARCH ESO ISS PBL24 END | 80.525 |
| HIERARCH ESO ISS PBLA24 START | 35.34 |
| HIERARCH ESO ISS PBLA24 END | 35.732 |
| HIERARCH ESO ISS PBL34 START | 45.636 |
| HIERARCH ESO ISS PBL34 END | 45.803 |
| HIERARCH ESO ISS PBLA34 START | 64.852 |
| HIERARCH ESO ISS PBLA34 END | 65.243 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.007455 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.008081 |
| HIERARCH ESO ISS AMBI TEMP | 11.98 |
| HIERARCH ESO ISS AMBI FWHM START | 0.52 |
| HIERARCH ESO ISS AMBI FWHM END | 0.48 |
| HIERARCH ESO FT ROBJ NAME | WDSJ14077-4952A |
| HIERARCH ESO FT ROBJ ALPHA | 140741.527 |
| HIERARCH ESO FT ROBJ DELTA | -495203.430 |