Exposure
- ID
- GRAVI.2025-10-04T08:14:46.581_2
- Header ID
- GRAVI.2025-10-04T08:14:46.581
- Date updated
- 2025-10-04 08:30:33 UTC+0000
- Release date
- 2026-04-02 08:30:33 UTC+0000
- UTC Start
- 2025-10-04 08:14:46.581
- UTC End
- 2025-10-04 08:20:46.581
- MJD Start
- 60952.34359469
- MJD End
- 60952.347761356665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0023020000000000002
- Ambient temperature (°C)
- 10.08
- Seeing (arcsec)
- 0.5900000000000001
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 | 52.6970 | 52.9470 | 26.6000 | 27.2000 |
| U1-U3 | 96.0270 | 96.5530 | 33.3000 | 33.9000 |
| U1-U4 | 126.5910 | 127.2870 | 61.8130 | 62.0470 |
| U2-U3 | 44.1230 | 44.3890 | 41.4000 | 41.8000 |
| U2-U4 | 88.8740 | 89.1100 | 81.7960 | 81.8840 |
| U3-U4 | 62.2570 | 62.1030 | 109.1610 | 109.2760 |
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 | 60952.34359469 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | 51Eri |
| HIERARCH ESO INS SOBJ NAME | 51Eri |
| RA | 69.402589 |
| DEC | -2.4741 |
| 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 | 376.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 52.697 |
| HIERARCH ESO ISS PBL12 END | 52.947 |
| HIERARCH ESO ISS PBLA12 START | 26.6 |
| HIERARCH ESO ISS PBLA12 END | 27.2 |
| HIERARCH ESO ISS PBL13 START | 96.027 |
| HIERARCH ESO ISS PBL13 END | 96.553 |
| HIERARCH ESO ISS PBLA13 START | 33.3 |
| HIERARCH ESO ISS PBLA13 END | 33.9 |
| HIERARCH ESO ISS PBL14 START | 126.591 |
| HIERARCH ESO ISS PBL14 END | 127.287 |
| HIERARCH ESO ISS PBLA14 START | 61.813 |
| HIERARCH ESO ISS PBLA14 END | 62.047 |
| HIERARCH ESO ISS PBL23 START | 44.123 |
| HIERARCH ESO ISS PBL23 END | 44.389 |
| HIERARCH ESO ISS PBLA23 START | 41.4 |
| HIERARCH ESO ISS PBLA23 END | 41.8 |
| HIERARCH ESO ISS PBL24 START | 88.874 |
| HIERARCH ESO ISS PBL24 END | 89.11 |
| HIERARCH ESO ISS PBLA24 START | 81.796 |
| HIERARCH ESO ISS PBLA24 END | 81.884 |
| HIERARCH ESO ISS PBL34 START | 62.257 |
| HIERARCH ESO ISS PBL34 END | 62.103 |
| HIERARCH ESO ISS PBLA34 START | 109.161 |
| HIERARCH ESO ISS PBLA34 END | 109.276 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002174 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00243 |
| HIERARCH ESO ISS AMBI TEMP | 10.08 |
| HIERARCH ESO ISS AMBI FWHM START | 0.54 |
| HIERARCH ESO ISS AMBI FWHM END | 0.64 |
| HIERARCH ESO FT ROBJ NAME | 51Eri |
| HIERARCH ESO FT ROBJ ALPHA | 043736.133 |
| HIERARCH ESO FT ROBJ DELTA | -022824.775 |