Exposure
- ID
- GRAVI.2025-08-09T23:36:05.698_2
- Header ID
- GRAVI.2025-08-09T23:36:05.698
- Date updated
- 2025-08-09 23:55:45 UTC+0000
- Release date
- 2026-08-09 23:55:45 UTC+0000
- UTC Start
- 2025-08-09 23:36:05.698
- UTC End
- 2025-08-09 23:42:05.698
- MJD Start
- 60896.98339928
- MJD End
- 60896.98756594666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004723
- Ambient temperature (°C)
- 13.27
- Seeing (arcsec)
- 0.75
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 | 56.4550 | 56.4750 | 14.2000 | 15.0000 |
| U1-U3 | 101.9030 | 101.9900 | 20.1000 | 21.0000 |
| U1-U4 | 125.6930 | 126.2920 | 47.0070 | 48.0430 |
| U2-U3 | 46.1160 | 46.1940 | 27.3000 | 28.3000 |
| U2-U4 | 84.0460 | 84.7280 | 68.3780 | 69.3430 |
| U3-U4 | 57.8490 | 58.4060 | 99.9650 | 100.6510 |
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 | 60896.98339928 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416689 |
| 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 | 56.455 |
| HIERARCH ESO ISS PBL12 END | 56.475 |
| HIERARCH ESO ISS PBLA12 START | 14.2 |
| HIERARCH ESO ISS PBLA12 END | 15.0 |
| HIERARCH ESO ISS PBL13 START | 101.903 |
| HIERARCH ESO ISS PBL13 END | 101.99 |
| HIERARCH ESO ISS PBLA13 START | 20.1 |
| HIERARCH ESO ISS PBLA13 END | 21.0 |
| HIERARCH ESO ISS PBL14 START | 125.693 |
| HIERARCH ESO ISS PBL14 END | 126.292 |
| HIERARCH ESO ISS PBLA14 START | 47.007 |
| HIERARCH ESO ISS PBLA14 END | 48.043 |
| HIERARCH ESO ISS PBL23 START | 46.116 |
| HIERARCH ESO ISS PBL23 END | 46.194 |
| HIERARCH ESO ISS PBLA23 START | 27.3 |
| HIERARCH ESO ISS PBLA23 END | 28.3 |
| HIERARCH ESO ISS PBL24 START | 84.046 |
| HIERARCH ESO ISS PBL24 END | 84.728 |
| HIERARCH ESO ISS PBLA24 START | 68.378 |
| HIERARCH ESO ISS PBLA24 END | 69.343 |
| HIERARCH ESO ISS PBL34 START | 57.849 |
| HIERARCH ESO ISS PBL34 END | 58.406 |
| HIERARCH ESO ISS PBLA34 START | 99.965 |
| HIERARCH ESO ISS PBLA34 END | 100.651 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00474 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004706 |
| HIERARCH ESO ISS AMBI TEMP | 13.27 |
| HIERARCH ESO ISS AMBI FWHM START | 0.75 |
| HIERARCH ESO ISS AMBI FWHM END | 0.75 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |