Exposure
- ID
- GRAVI.2025-08-08T02:30:59.697_2
- Header ID
- GRAVI.2025-08-08T02:30:59.697
- Date updated
- 2025-08-08 02:50:44 UTC+0000
- Release date
- 2026-08-08 02:50:44 UTC+0000
- UTC Start
- 2025-08-08 02:30:59.697
- UTC End
- 2025-08-08 02:36:59.697
- MJD Start
- 60895.1048576
- MJD End
- 60895.10902426667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002218
- Ambient temperature (°C)
- 12.83
- Seeing (arcsec)
- 1.055
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 | 55.4370 | 55.2810 | 32.8000 | 33.3000 |
| U1-U3 | 99.9600 | 99.5970 | 39.1000 | 39.7000 |
| U1-U4 | 125.2610 | 124.4120 | 67.9030 | 68.5330 |
| U2-U3 | 45.2850 | 45.0750 | 47.0000 | 47.5000 |
| U2-U4 | 86.0520 | 85.4240 | 89.6600 | 90.4470 |
| U3-U4 | 61.0660 | 60.7700 | 119.8580 | 120.8070 |
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 | 60895.1048576 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417542 |
| DEC | -29.00693 |
| 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 | 55.437 |
| HIERARCH ESO ISS PBL12 END | 55.281 |
| HIERARCH ESO ISS PBLA12 START | 32.8 |
| HIERARCH ESO ISS PBLA12 END | 33.3 |
| HIERARCH ESO ISS PBL13 START | 99.96 |
| HIERARCH ESO ISS PBL13 END | 99.597 |
| HIERARCH ESO ISS PBLA13 START | 39.1 |
| HIERARCH ESO ISS PBLA13 END | 39.7 |
| HIERARCH ESO ISS PBL14 START | 125.261 |
| HIERARCH ESO ISS PBL14 END | 124.412 |
| HIERARCH ESO ISS PBLA14 START | 67.903 |
| HIERARCH ESO ISS PBLA14 END | 68.533 |
| HIERARCH ESO ISS PBL23 START | 45.285 |
| HIERARCH ESO ISS PBL23 END | 45.075 |
| HIERARCH ESO ISS PBLA23 START | 47.0 |
| HIERARCH ESO ISS PBLA23 END | 47.5 |
| HIERARCH ESO ISS PBL24 START | 86.052 |
| HIERARCH ESO ISS PBL24 END | 85.424 |
| HIERARCH ESO ISS PBLA24 START | 89.66 |
| HIERARCH ESO ISS PBLA24 END | 90.447 |
| HIERARCH ESO ISS PBL34 START | 61.066 |
| HIERARCH ESO ISS PBL34 END | 60.77 |
| HIERARCH ESO ISS PBLA34 START | 119.858 |
| HIERARCH ESO ISS PBLA34 END | 120.807 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00258 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.001856 |
| HIERARCH ESO ISS AMBI TEMP | 12.83 |
| HIERARCH ESO ISS AMBI FWHM START | 0.9 |
| HIERARCH ESO ISS AMBI FWHM END | 1.21 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |