Exposure
- ID
- GRAVI.2025-08-07T02:47:41.144_2
- Header ID
- GRAVI.2025-08-07T02:47:41.144
- Date updated
- 2025-08-07 03:05:42 UTC+0000
- Release date
- 2026-08-07 03:05:41 UTC+0000
- UTC Start
- 2025-08-07 02:47:41.144
- UTC End
- 2025-08-07 02:53:41.144
- MJD Start
- 60894.11644843
- MJD End
- 60894.12061509667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.00375
- Ambient temperature (°C)
- 13.52
- 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 | 55.1160 | 54.9350 | 33.8000 | 34.3000 |
| U1-U3 | 99.2130 | 98.7930 | 40.2000 | 40.7000 |
| U1-U4 | 123.5130 | 122.5310 | 69.1410 | 69.7510 |
| U2-U3 | 44.8530 | 44.6110 | 48.0000 | 48.5000 |
| U2-U4 | 84.7580 | 84.0310 | 91.2210 | 92.0170 |
| U3-U4 | 60.4580 | 60.1170 | 121.7540 | 122.7400 |
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 | 60894.11644843 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417153 |
| DEC | -29.00714 |
| 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 | 55.116 |
| HIERARCH ESO ISS PBL12 END | 54.935 |
| HIERARCH ESO ISS PBLA12 START | 33.8 |
| HIERARCH ESO ISS PBLA12 END | 34.3 |
| HIERARCH ESO ISS PBL13 START | 99.213 |
| HIERARCH ESO ISS PBL13 END | 98.793 |
| HIERARCH ESO ISS PBLA13 START | 40.2 |
| HIERARCH ESO ISS PBLA13 END | 40.7 |
| HIERARCH ESO ISS PBL14 START | 123.513 |
| HIERARCH ESO ISS PBL14 END | 122.531 |
| HIERARCH ESO ISS PBLA14 START | 69.141 |
| HIERARCH ESO ISS PBLA14 END | 69.751 |
| HIERARCH ESO ISS PBL23 START | 44.853 |
| HIERARCH ESO ISS PBL23 END | 44.611 |
| HIERARCH ESO ISS PBLA23 START | 48.0 |
| HIERARCH ESO ISS PBLA23 END | 48.5 |
| HIERARCH ESO ISS PBL24 START | 84.758 |
| HIERARCH ESO ISS PBL24 END | 84.031 |
| HIERARCH ESO ISS PBLA24 START | 91.221 |
| HIERARCH ESO ISS PBLA24 END | 92.017 |
| HIERARCH ESO ISS PBL34 START | 60.458 |
| HIERARCH ESO ISS PBL34 END | 60.117 |
| HIERARCH ESO ISS PBLA34 START | 121.754 |
| HIERARCH ESO ISS PBLA34 END | 122.74 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003622 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003878 |
| HIERARCH ESO ISS AMBI TEMP | 13.52 |
| HIERARCH ESO ISS AMBI FWHM START | 0.85 |
| HIERARCH ESO ISS AMBI FWHM END | 1.04 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |