Exposure
- ID
- GRAVI.2025-12-05T02:57:21.576_2
- Header ID
- GRAVI.2025-12-05T02:57:21.576
- Date updated
- 2025-12-05 03:10:45 UTC+0000
- Release date
- 2026-12-05 03:10:45 UTC+0000
- UTC Start
- 2025-12-05 02:57:21.576
- UTC End
- 2025-12-05 03:00:09.576
- MJD Start
- 61014.12316639
- MJD End
- 61014.12511083445
- Exposure time (s)
- 168.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0041355
- Ambient temperature (°C)
- 12.41
- Seeing (arcsec)
- 0.85
Observation
- ID
- 71173
- Category
- science
- Program ID
- 116.29H7.001
- Program Title
- GPAO COMMISSIONING
- Program Type
- Normal
- PI / COI
- TEAM
Target
- ID
- 45803
- Name
- 51_Eri
- 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 | 49.7780 | 49.9010 | 17.9000 | 18.3000 |
| U1-U3 | 89.2080 | 89.5220 | 25.0000 | 25.5000 |
| U1-U4 | 113.3460 | 114.1320 | 57.3110 | 57.5990 |
| U2-U3 | 40.2920 | 40.4850 | 33.8000 | 34.3000 |
| U2-U4 | 81.3090 | 81.8400 | 80.2040 | 80.3040 |
| U3-U4 | 60.9410 | 61.1270 | 108.7990 | 108.7750 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 116.29H7.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 61014.12316639 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | 51 Eri |
| HIERARCH ESO INS SOBJ NAME | 51_Eri |
| RA | 69.402549 |
| DEC | -2.47417 |
| 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 | 204.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 1.0 |
| HIERARCH ESO DET2 NDIT | 168 |
| HIERARCH ESO ISS PBL12 START | 49.778 |
| HIERARCH ESO ISS PBL12 END | 49.901 |
| HIERARCH ESO ISS PBLA12 START | 17.9 |
| HIERARCH ESO ISS PBLA12 END | 18.3 |
| HIERARCH ESO ISS PBL13 START | 89.208 |
| HIERARCH ESO ISS PBL13 END | 89.522 |
| HIERARCH ESO ISS PBLA13 START | 25.0 |
| HIERARCH ESO ISS PBLA13 END | 25.5 |
| HIERARCH ESO ISS PBL14 START | 113.346 |
| HIERARCH ESO ISS PBL14 END | 114.132 |
| HIERARCH ESO ISS PBLA14 START | 57.311 |
| HIERARCH ESO ISS PBLA14 END | 57.599 |
| HIERARCH ESO ISS PBL23 START | 40.292 |
| HIERARCH ESO ISS PBL23 END | 40.485 |
| HIERARCH ESO ISS PBLA23 START | 33.8 |
| HIERARCH ESO ISS PBLA23 END | 34.3 |
| HIERARCH ESO ISS PBL24 START | 81.309 |
| HIERARCH ESO ISS PBL24 END | 81.84 |
| HIERARCH ESO ISS PBLA24 START | 80.204 |
| HIERARCH ESO ISS PBLA24 END | 80.304 |
| HIERARCH ESO ISS PBL34 START | 60.941 |
| HIERARCH ESO ISS PBL34 END | 61.127 |
| HIERARCH ESO ISS PBLA34 START | 108.799 |
| HIERARCH ESO ISS PBLA34 END | 108.775 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004185 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004086 |
| HIERARCH ESO ISS AMBI TEMP | 12.41 |
| HIERARCH ESO ISS AMBI FWHM START | 0.83 |
| HIERARCH ESO ISS AMBI FWHM END | 0.87 |
| HIERARCH ESO FT ROBJ NAME | 51_Eri |
| HIERARCH ESO FT ROBJ ALPHA | 043736.133 |
| HIERARCH ESO FT ROBJ DELTA | -022824.775 |