Exposure
- ID
- GRAVI.2021-04-02T07:33:42.337_2
- Header ID
- GRAVI.2021-04-02T07:33:42.337
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 07:41:18 UTC+0000
- UTC Start
- 2021-04-02 07:33:42.337
- UTC End
- 2021-04-02 07:34:46.337
- MJD Start
- 59306.31507334
- MJD End
- 59306.3158140807
- Exposure time (s)
- 64.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.00284
- Ambient temperature (°C)
- 11.99
- Seeing (arcsec)
- 0.97
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 | 48.8050 | 48.7270 | 39.2000 | 39.4000 |
| U1-U3 | 88.4640 | 88.3010 | 46.6000 | 46.8000 |
| U1-U4 | 117.7650 | 117.5300 | 77.8610 | 78.1310 |
| U2-U3 | 40.5420 | 40.4600 | 55.4000 | 55.7000 |
| U2-U4 | 85.2660 | 85.1500 | 98.7940 | 99.1000 |
| U3-U4 | 62.3490 | 62.3350 | 125.3090 | 125.6130 |
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 | 59306.31507334 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 123227 |
| HIERARCH ESO INS SOBJ NAME | WDSJ14077-4952B |
| RA | 211.926204 |
| 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 | 48.805 |
| HIERARCH ESO ISS PBL12 END | 48.727 |
| HIERARCH ESO ISS PBLA12 START | 39.2 |
| HIERARCH ESO ISS PBLA12 END | 39.4 |
| HIERARCH ESO ISS PBL13 START | 88.464 |
| HIERARCH ESO ISS PBL13 END | 88.301 |
| HIERARCH ESO ISS PBLA13 START | 46.6 |
| HIERARCH ESO ISS PBLA13 END | 46.8 |
| HIERARCH ESO ISS PBL14 START | 117.765 |
| HIERARCH ESO ISS PBL14 END | 117.53 |
| HIERARCH ESO ISS PBLA14 START | 77.861 |
| HIERARCH ESO ISS PBLA14 END | 78.131 |
| HIERARCH ESO ISS PBL23 START | 40.542 |
| HIERARCH ESO ISS PBL23 END | 40.46 |
| HIERARCH ESO ISS PBLA23 START | 55.4 |
| HIERARCH ESO ISS PBLA23 END | 55.7 |
| HIERARCH ESO ISS PBL24 START | 85.266 |
| HIERARCH ESO ISS PBL24 END | 85.15 |
| HIERARCH ESO ISS PBLA24 START | 98.794 |
| HIERARCH ESO ISS PBLA24 END | 99.1 |
| HIERARCH ESO ISS PBL34 START | 62.349 |
| HIERARCH ESO ISS PBL34 END | 62.335 |
| HIERARCH ESO ISS PBLA34 START | 125.309 |
| HIERARCH ESO ISS PBLA34 END | 125.613 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00284 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00284 |
| HIERARCH ESO ISS AMBI TEMP | 11.99 |
| HIERARCH ESO ISS AMBI FWHM START | 0.97 |
| HIERARCH ESO ISS AMBI FWHM END | 0.97 |
| HIERARCH ESO FT ROBJ NAME | WDSJ14077-4952A |
| HIERARCH ESO FT ROBJ ALPHA | 140741.527 |
| HIERARCH ESO FT ROBJ DELTA | -495203.430 |