Exposure
- ID
- GRAVI.2021-04-02T07:42:21.358_2
- Header ID
- GRAVI.2021-04-02T07:42:21.358
- Date updated
- 2021-09-29 14:27:08 UTC+0000
- Release date
- 2022-04-02 07:51:11 UTC+0000
- UTC Start
- 2021-04-02 07:42:21.358
- UTC End
- 2021-04-02 07:43:25.358
- MJD Start
- 59306.32108053
- MJD End
- 59306.3218212707
- Exposure time (s)
- 64.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002573
- Ambient temperature (°C)
- 11.8
- Seeing (arcsec)
- 1.205
Observation
- ID
- 47379
- 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
- 35536
- Name
- WDSJ14077-4952B
- RA
- 211.922824583333
- DEC
- -49.8673677777778
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 | 48.3540 | 48.2720 | 40.3000 | 40.4000 |
| U1-U3 | 87.5270 | 87.3560 | 47.7000 | 47.9000 |
| U1-U4 | 116.4040 | 116.1550 | 79.3900 | 79.6620 |
| U2-U3 | 40.0670 | 39.9810 | 56.6000 | 56.9000 |
| U2-U4 | 84.5930 | 84.4690 | 100.5340 | 100.8440 |
| U3-U4 | 62.2600 | 62.2420 | 127.0320 | 127.3390 |
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 | 59306.32108053 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 123227 |
| HIERARCH ESO INS SOBJ NAME | WDSJ14077-4952A |
| 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 | 48.354 |
| HIERARCH ESO ISS PBL12 END | 48.272 |
| HIERARCH ESO ISS PBLA12 START | 40.3 |
| HIERARCH ESO ISS PBLA12 END | 40.4 |
| HIERARCH ESO ISS PBL13 START | 87.527 |
| HIERARCH ESO ISS PBL13 END | 87.356 |
| HIERARCH ESO ISS PBLA13 START | 47.7 |
| HIERARCH ESO ISS PBLA13 END | 47.9 |
| HIERARCH ESO ISS PBL14 START | 116.404 |
| HIERARCH ESO ISS PBL14 END | 116.155 |
| HIERARCH ESO ISS PBLA14 START | 79.39 |
| HIERARCH ESO ISS PBLA14 END | 79.662 |
| HIERARCH ESO ISS PBL23 START | 40.067 |
| HIERARCH ESO ISS PBL23 END | 39.981 |
| HIERARCH ESO ISS PBLA23 START | 56.6 |
| HIERARCH ESO ISS PBLA23 END | 56.9 |
| HIERARCH ESO ISS PBL24 START | 84.593 |
| HIERARCH ESO ISS PBL24 END | 84.469 |
| HIERARCH ESO ISS PBLA24 START | 100.534 |
| HIERARCH ESO ISS PBLA24 END | 100.844 |
| HIERARCH ESO ISS PBL34 START | 62.26 |
| HIERARCH ESO ISS PBL34 END | 62.242 |
| HIERARCH ESO ISS PBLA34 START | 127.032 |
| HIERARCH ESO ISS PBLA34 END | 127.339 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002524 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002622 |
| HIERARCH ESO ISS AMBI TEMP | 11.8 |
| HIERARCH ESO ISS AMBI FWHM START | 1.26 |
| HIERARCH ESO ISS AMBI FWHM END | 1.15 |
| HIERARCH ESO FT ROBJ NAME | WDSJ14077-4952B |
| HIERARCH ESO FT ROBJ ALPHA | 140741.4779 |
| HIERARCH ESO FT ROBJ DELTA | -495202.5240 |