Exposure
- ID
- GRAVI.2025-12-05T02:37:57.527_2
- Header ID
- GRAVI.2025-12-05T02:37:57.527
- Date updated
- 2025-12-05 02:50:40 UTC+0000
- Release date
- 2026-12-05 02:50:40 UTC+0000
- UTC Start
- 2025-12-05 02:37:57.527
- UTC End
- 2025-12-05 02:39:21.527
- MJD Start
- 61014.1096936
- MJD End
- 61014.11066582223
- Exposure time (s)
- 84.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0043935
- Ambient temperature (°C)
- 12.59
- Seeing (arcsec)
- 0.7949999999999999
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 | 49.1200 | 49.1750 | 15.1000 | 15.3000 |
| U1-U3 | 87.4540 | 87.6040 | 22.2000 | 22.4000 |
| U1-U4 | 108.5590 | 108.9970 | 55.4610 | 55.6370 |
| U2-U3 | 39.1850 | 39.2820 | 31.1000 | 31.4000 |
| U2-U4 | 77.9340 | 78.2530 | 79.5640 | 79.6250 |
| U3-U4 | 59.6490 | 59.7780 | 109.0140 | 108.9890 |
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 | 61014.1096936 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | 51 Eri |
| HIERARCH ESO INS SOBJ NAME | 51_Eri |
| RA | 69.402558 |
| DEC | -2.47415 |
| 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 | 109.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 1.0 |
| HIERARCH ESO DET2 NDIT | 84 |
| HIERARCH ESO ISS PBL12 START | 49.12 |
| HIERARCH ESO ISS PBL12 END | 49.175 |
| HIERARCH ESO ISS PBLA12 START | 15.1 |
| HIERARCH ESO ISS PBLA12 END | 15.3 |
| HIERARCH ESO ISS PBL13 START | 87.454 |
| HIERARCH ESO ISS PBL13 END | 87.604 |
| HIERARCH ESO ISS PBLA13 START | 22.2 |
| HIERARCH ESO ISS PBLA13 END | 22.4 |
| HIERARCH ESO ISS PBL14 START | 108.559 |
| HIERARCH ESO ISS PBL14 END | 108.997 |
| HIERARCH ESO ISS PBLA14 START | 55.461 |
| HIERARCH ESO ISS PBLA14 END | 55.637 |
| HIERARCH ESO ISS PBL23 START | 39.185 |
| HIERARCH ESO ISS PBL23 END | 39.282 |
| HIERARCH ESO ISS PBLA23 START | 31.1 |
| HIERARCH ESO ISS PBLA23 END | 31.4 |
| HIERARCH ESO ISS PBL24 START | 77.934 |
| HIERARCH ESO ISS PBL24 END | 78.253 |
| HIERARCH ESO ISS PBLA24 START | 79.564 |
| HIERARCH ESO ISS PBLA24 END | 79.625 |
| HIERARCH ESO ISS PBL34 START | 59.649 |
| HIERARCH ESO ISS PBL34 END | 59.778 |
| HIERARCH ESO ISS PBLA34 START | 109.014 |
| HIERARCH ESO ISS PBLA34 END | 108.989 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004214 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004573 |
| HIERARCH ESO ISS AMBI TEMP | 12.59 |
| HIERARCH ESO ISS AMBI FWHM START | 0.82 |
| HIERARCH ESO ISS AMBI FWHM END | 0.77 |
| HIERARCH ESO FT ROBJ NAME | 51_Eri |
| HIERARCH ESO FT ROBJ ALPHA | 043736.133 |
| HIERARCH ESO FT ROBJ DELTA | -022824.775 |