Exposure
- ID
- GRAVI.2025-08-10T00:34:38.847_2
- Header ID
- GRAVI.2025-08-10T00:34:38.847
- Date updated
- 2025-08-10 00:50:38 UTC+0000
- Release date
- 2026-08-10 00:50:38 UTC+0000
- UTC Start
- 2025-08-10 00:34:38.847
- UTC End
- 2025-08-10 00:40:38.847
- MJD Start
- 60897.02406073
- MJD End
- 60897.028227396666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004021
- Ambient temperature (°C)
- 12.6
- Seeing (arcsec)
- 0.78
Observation
- ID
- 69325
- Category
- science
- Program ID
- 115.27WT.004
- Program Title
- THE GALACTIC CENTER WITH GRAVITY(+) - PROBING EVENT HORIZON SCALE PHYSICS WITH STARS AND FLARES
- Program Type
- GTO
- PI / COI
- EISENHAUER / GILLESSEN / GENZEL / OTT / MANG / DRESCHER / RIBEIRO / SADUN BORDONI / STRAUBMEIER / GARCIA / PAUMARD / BOURDAROT / STURM / LUTZ / LE BOUQUIN / CAO / KREIDBERG / HOENIG / FOSCHI / PERRIN / CARDOSO / AIMAR / URSO / ABD EL DAYEM / ROUSSELET-PER
Target
- ID
- 51518
- Name
- IRS16C
- RA
- 266.417075
- DEC
- -29.00768111111111
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 | 56.5580 | 56.5510 | 21.6000 | 22.4000 |
| U1-U3 | 102.4280 | 102.4340 | 27.9000 | 28.7000 |
| U1-U4 | 129.6920 | 129.9020 | 55.5910 | 56.4400 |
| U2-U3 | 46.6150 | 46.6330 | 35.5000 | 36.3000 |
| U2-U4 | 88.6110 | 88.8760 | 76.4830 | 77.3090 |
| U3-U4 | 61.5800 | 61.8120 | 106.2750 | 106.9970 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 115.27WT.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60897.02406073 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416722 |
| DEC | -29.00644 |
| HIERARCH ESO INS SPEC RES | LOW |
| 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 | 389.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 56.558 |
| HIERARCH ESO ISS PBL12 END | 56.551 |
| HIERARCH ESO ISS PBLA12 START | 21.6 |
| HIERARCH ESO ISS PBLA12 END | 22.4 |
| HIERARCH ESO ISS PBL13 START | 102.428 |
| HIERARCH ESO ISS PBL13 END | 102.434 |
| HIERARCH ESO ISS PBLA13 START | 27.9 |
| HIERARCH ESO ISS PBLA13 END | 28.7 |
| HIERARCH ESO ISS PBL14 START | 129.692 |
| HIERARCH ESO ISS PBL14 END | 129.902 |
| HIERARCH ESO ISS PBLA14 START | 55.591 |
| HIERARCH ESO ISS PBLA14 END | 56.44 |
| HIERARCH ESO ISS PBL23 START | 46.615 |
| HIERARCH ESO ISS PBL23 END | 46.633 |
| HIERARCH ESO ISS PBLA23 START | 35.5 |
| HIERARCH ESO ISS PBLA23 END | 36.3 |
| HIERARCH ESO ISS PBL24 START | 88.611 |
| HIERARCH ESO ISS PBL24 END | 88.876 |
| HIERARCH ESO ISS PBLA24 START | 76.483 |
| HIERARCH ESO ISS PBLA24 END | 77.309 |
| HIERARCH ESO ISS PBL34 START | 61.58 |
| HIERARCH ESO ISS PBL34 END | 61.812 |
| HIERARCH ESO ISS PBLA34 START | 106.275 |
| HIERARCH ESO ISS PBLA34 END | 106.997 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00399 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004052 |
| HIERARCH ESO ISS AMBI TEMP | 12.6 |
| HIERARCH ESO ISS AMBI FWHM START | 0.79 |
| HIERARCH ESO ISS AMBI FWHM END | 0.77 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |