Exposure
- ID
- GRAVI.2025-08-08T01:47:05.584_2
- Header ID
- GRAVI.2025-08-08T01:47:05.584
- Date updated
- 2025-08-08 02:00:35 UTC+0000
- Release date
- 2026-08-08 02:00:35 UTC+0000
- UTC Start
- 2025-08-08 01:47:05.584
- UTC End
- 2025-08-08 01:53:05.584
- MJD Start
- 60895.07437019
- MJD End
- 60895.078536856665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0031205
- Ambient temperature (°C)
- 13.32
- Seeing (arcsec)
- 0.8500000000000001
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 | 56.1950 | 56.1140 | 28.7000 | 29.4000 |
| U1-U3 | 101.7120 | 101.5270 | 35.1000 | 35.8000 |
| U1-U4 | 129.2140 | 128.8260 | 63.3700 | 64.0690 |
| U2-U3 | 46.2880 | 46.1840 | 42.9000 | 43.5000 |
| U2-U4 | 88.9060 | 88.6410 | 84.4180 | 85.1870 |
| U3-U4 | 62.3480 | 62.2440 | 113.9170 | 114.7440 |
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 | 60895.07437019 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417286 |
| DEC | -29.0066 |
| 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 | 56.195 |
| HIERARCH ESO ISS PBL12 END | 56.114 |
| HIERARCH ESO ISS PBLA12 START | 28.7 |
| HIERARCH ESO ISS PBLA12 END | 29.4 |
| HIERARCH ESO ISS PBL13 START | 101.712 |
| HIERARCH ESO ISS PBL13 END | 101.527 |
| HIERARCH ESO ISS PBLA13 START | 35.1 |
| HIERARCH ESO ISS PBLA13 END | 35.8 |
| HIERARCH ESO ISS PBL14 START | 129.214 |
| HIERARCH ESO ISS PBL14 END | 128.826 |
| HIERARCH ESO ISS PBLA14 START | 63.37 |
| HIERARCH ESO ISS PBLA14 END | 64.069 |
| HIERARCH ESO ISS PBL23 START | 46.288 |
| HIERARCH ESO ISS PBL23 END | 46.184 |
| HIERARCH ESO ISS PBLA23 START | 42.9 |
| HIERARCH ESO ISS PBLA23 END | 43.5 |
| HIERARCH ESO ISS PBL24 START | 88.906 |
| HIERARCH ESO ISS PBL24 END | 88.641 |
| HIERARCH ESO ISS PBLA24 START | 84.418 |
| HIERARCH ESO ISS PBLA24 END | 85.187 |
| HIERARCH ESO ISS PBL34 START | 62.348 |
| HIERARCH ESO ISS PBL34 END | 62.244 |
| HIERARCH ESO ISS PBLA34 START | 113.917 |
| HIERARCH ESO ISS PBLA34 END | 114.744 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003343 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002898 |
| HIERARCH ESO ISS AMBI TEMP | 13.32 |
| HIERARCH ESO ISS AMBI FWHM START | 0.79 |
| HIERARCH ESO ISS AMBI FWHM END | 0.91 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |