Exposure
- ID
- GRAVI.2025-10-04T08:06:43.560_2
- Header ID
- GRAVI.2025-10-04T08:06:43.560
- Date updated
- 2025-10-04 08:10:55 UTC+0000
- Release date
- 2026-04-02 08:10:55 UTC+0000
- UTC Start
- 2025-10-04 08:06:43.560
- UTC End
- 2025-10-04 08:07:12.360
- MJD Start
- 60952.33800417
- MJD End
- 60952.33833750333
- Exposure time (s)
- 28.8
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0043809999999999995
- Ambient temperature (°C)
- 10.24
- Seeing (arcsec)
- 0.475
Observation
- ID
- 62701
- Category
- science
- Program ID
- 111.24MN.004
- Program Title
- MONITORING 51 ERI B FOR A PERTURBING INNER COMPANION
- Program Type
- Monitoring
- PI / COI
- BALMER / KAMMERER / PUEYO / LACOUR / MAIRE / WANG / NOWAK / STOLKER / MOLLIERE / CORREIA / HINKLEY / POURRÉ / BOURDAROT / OTTEN / KERVELLA / CASELLI / BENISTY / SAMLAND / RICKMAN
Target
- ID
- 46641
- Name
- 51Eri
- RA
- 69.40055416666667
- DEC
- -2.473548611111111
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 | 52.3710 | 52.4060 | 25.8000 | 25.9000 |
| U1-U3 | 95.3250 | 95.4010 | 32.6000 | 32.7000 |
| U1-U4 | 125.5840 | 125.6980 | 61.4800 | 61.5180 |
| U2-U3 | 43.7610 | 43.8010 | 40.7000 | 40.8000 |
| U2-U4 | 88.4730 | 88.5220 | 81.6730 | 81.6860 |
| U3-U4 | 62.3950 | 62.3830 | 109.0320 | 109.0450 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 111.24MN.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60952.33800417 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | 51Eri |
| HIERARCH ESO INS SOBJ NAME | 51Eri |
| RA | 69.402593 |
| DEC | -2.47409 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | COMBINED |
| 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 | 55.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 0.3 |
| HIERARCH ESO DET2 NDIT | 96 |
| HIERARCH ESO ISS PBL12 START | 52.371 |
| HIERARCH ESO ISS PBL12 END | 52.406 |
| HIERARCH ESO ISS PBLA12 START | 25.8 |
| HIERARCH ESO ISS PBLA12 END | 25.9 |
| HIERARCH ESO ISS PBL13 START | 95.325 |
| HIERARCH ESO ISS PBL13 END | 95.401 |
| HIERARCH ESO ISS PBLA13 START | 32.6 |
| HIERARCH ESO ISS PBLA13 END | 32.7 |
| HIERARCH ESO ISS PBL14 START | 125.584 |
| HIERARCH ESO ISS PBL14 END | 125.698 |
| HIERARCH ESO ISS PBLA14 START | 61.48 |
| HIERARCH ESO ISS PBLA14 END | 61.518 |
| HIERARCH ESO ISS PBL23 START | 43.761 |
| HIERARCH ESO ISS PBL23 END | 43.801 |
| HIERARCH ESO ISS PBLA23 START | 40.7 |
| HIERARCH ESO ISS PBLA23 END | 40.8 |
| HIERARCH ESO ISS PBL24 START | 88.473 |
| HIERARCH ESO ISS PBL24 END | 88.522 |
| HIERARCH ESO ISS PBLA24 START | 81.673 |
| HIERARCH ESO ISS PBLA24 END | 81.686 |
| HIERARCH ESO ISS PBL34 START | 62.395 |
| HIERARCH ESO ISS PBL34 END | 62.383 |
| HIERARCH ESO ISS PBLA34 START | 109.032 |
| HIERARCH ESO ISS PBLA34 END | 109.045 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003666 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005096 |
| HIERARCH ESO ISS AMBI TEMP | 10.24 |
| HIERARCH ESO ISS AMBI FWHM START | 0.52 |
| HIERARCH ESO ISS AMBI FWHM END | 0.43 |
| HIERARCH ESO FT ROBJ NAME | 51Eri |
| HIERARCH ESO FT ROBJ ALPHA | 043736.133 |
| HIERARCH ESO FT ROBJ DELTA | -022824.775 |