Exposure
- ID
- GRAVI.2025-08-09T23:28:56.679_2
- Header ID
- GRAVI.2025-08-09T23:28:56.679
- Date updated
- 2025-08-09 23:45:31 UTC+0000
- Release date
- 2026-08-09 23:45:30 UTC+0000
- UTC Start
- 2025-08-09 23:28:56.679
- UTC End
- 2025-08-09 23:34:56.679
- MJD Start
- 60896.97843379
- MJD End
- 60896.982600456664
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004458500000000001
- Ambient temperature (°C)
- 13.14
- Seeing (arcsec)
- 0.76
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 | 56.4310 | 56.4530 | 13.2000 | 14.1000 |
| U1-U3 | 101.8030 | 101.8930 | 19.0000 | 20.0000 |
| U1-U4 | 124.9900 | 125.6230 | 45.8250 | 46.8880 |
| U2-U3 | 46.0260 | 46.1070 | 26.2000 | 27.2000 |
| U2-U4 | 83.2390 | 83.9660 | 67.2770 | 68.2670 |
| U3-U4 | 57.1870 | 57.7840 | 99.2010 | 99.8870 |
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 | 60896.97843379 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416687 |
| DEC | -29.00648 |
| 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 | 56.431 |
| HIERARCH ESO ISS PBL12 END | 56.453 |
| HIERARCH ESO ISS PBLA12 START | 13.2 |
| HIERARCH ESO ISS PBLA12 END | 14.1 |
| HIERARCH ESO ISS PBL13 START | 101.803 |
| HIERARCH ESO ISS PBL13 END | 101.893 |
| HIERARCH ESO ISS PBLA13 START | 19.0 |
| HIERARCH ESO ISS PBLA13 END | 20.0 |
| HIERARCH ESO ISS PBL14 START | 124.99 |
| HIERARCH ESO ISS PBL14 END | 125.623 |
| HIERARCH ESO ISS PBLA14 START | 45.825 |
| HIERARCH ESO ISS PBLA14 END | 46.888 |
| HIERARCH ESO ISS PBL23 START | 46.026 |
| HIERARCH ESO ISS PBL23 END | 46.107 |
| HIERARCH ESO ISS PBLA23 START | 26.2 |
| HIERARCH ESO ISS PBLA23 END | 27.2 |
| HIERARCH ESO ISS PBL24 START | 83.239 |
| HIERARCH ESO ISS PBL24 END | 83.966 |
| HIERARCH ESO ISS PBLA24 START | 67.277 |
| HIERARCH ESO ISS PBLA24 END | 68.267 |
| HIERARCH ESO ISS PBL34 START | 57.187 |
| HIERARCH ESO ISS PBL34 END | 57.784 |
| HIERARCH ESO ISS PBLA34 START | 99.201 |
| HIERARCH ESO ISS PBLA34 END | 99.887 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004303 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004614 |
| HIERARCH ESO ISS AMBI TEMP | 13.14 |
| HIERARCH ESO ISS AMBI FWHM START | 0.79 |
| HIERARCH ESO ISS AMBI FWHM END | 0.73 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |