Exposure
- ID
- GRAVI.2025-08-07T03:59:56.328_2
- Header ID
- GRAVI.2025-08-07T03:59:56.328
- Date updated
- 2025-08-07 04:15:53 UTC+0000
- Release date
- 2026-08-07 04:15:53 UTC+0000
- UTC Start
- 2025-08-07 03:59:56.328
- UTC End
- 2025-08-07 04:05:56.328
- MJD Start
- 60894.16662417
- MJD End
- 60894.170790836666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004339
- Ambient temperature (°C)
- 13.02
- Seeing (arcsec)
- 0.9450000000000001
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 | 52.3080 | 51.9690 | 38.6000 | 38.9000 |
| U1-U3 | 92.7360 | 91.9620 | 44.8000 | 45.1000 |
| U1-U4 | 108.5310 | 106.7740 | 75.6290 | 76.1800 |
| U2-U3 | 41.1310 | 40.6890 | 52.7000 | 53.0000 |
| U2-U4 | 73.8550 | 72.6110 | 100.8930 | 101.8750 |
| U3-U4 | 55.6240 | 55.1180 | 134.3200 | 135.6290 |
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 | 60894.16662417 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417169 |
| DEC | -29.0072 |
| 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 | 52.308 |
| HIERARCH ESO ISS PBL12 END | 51.969 |
| HIERARCH ESO ISS PBLA12 START | 38.6 |
| HIERARCH ESO ISS PBLA12 END | 38.9 |
| HIERARCH ESO ISS PBL13 START | 92.736 |
| HIERARCH ESO ISS PBL13 END | 91.962 |
| HIERARCH ESO ISS PBLA13 START | 44.8 |
| HIERARCH ESO ISS PBLA13 END | 45.1 |
| HIERARCH ESO ISS PBL14 START | 108.531 |
| HIERARCH ESO ISS PBL14 END | 106.774 |
| HIERARCH ESO ISS PBLA14 START | 75.629 |
| HIERARCH ESO ISS PBLA14 END | 76.18 |
| HIERARCH ESO ISS PBL23 START | 41.131 |
| HIERARCH ESO ISS PBL23 END | 40.689 |
| HIERARCH ESO ISS PBLA23 START | 52.7 |
| HIERARCH ESO ISS PBLA23 END | 53.0 |
| HIERARCH ESO ISS PBL24 START | 73.855 |
| HIERARCH ESO ISS PBL24 END | 72.611 |
| HIERARCH ESO ISS PBLA24 START | 100.893 |
| HIERARCH ESO ISS PBLA24 END | 101.875 |
| HIERARCH ESO ISS PBL34 START | 55.624 |
| HIERARCH ESO ISS PBL34 END | 55.118 |
| HIERARCH ESO ISS PBLA34 START | 134.32 |
| HIERARCH ESO ISS PBLA34 END | 135.629 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004232 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004446 |
| HIERARCH ESO ISS AMBI TEMP | 13.02 |
| HIERARCH ESO ISS AMBI FWHM START | 0.97 |
| HIERARCH ESO ISS AMBI FWHM END | 0.92 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |