Exposure
- ID
- GRAVI.2025-08-07T02:54:53.162_2
- Header ID
- GRAVI.2025-08-07T02:54:53.162
- Date updated
- 2025-08-07 03:10:38 UTC+0000
- Release date
- 2026-08-07 03:10:38 UTC+0000
- UTC Start
- 2025-08-07 02:54:53.162
- UTC End
- 2025-08-07 03:00:53.162
- MJD Start
- 60894.12144864
- MJD End
- 60894.125615306664
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004147
- Ambient temperature (°C)
- 13.23
- Seeing (arcsec)
- 0.9299999999999999
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 | 54.9130 | 54.7170 | 34.4000 | 34.9000 |
| U1-U3 | 98.7410 | 98.2860 | 40.7000 | 41.2000 |
| U1-U4 | 122.4090 | 121.3430 | 69.8230 | 70.4280 |
| U2-U3 | 44.5810 | 44.3180 | 48.6000 | 49.1000 |
| U2-U4 | 83.9410 | 83.1540 | 92.1130 | 92.9220 |
| U3-U4 | 60.0750 | 59.7090 | 122.8590 | 123.8760 |
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 | 60894.12144864 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417162 |
| DEC | -29.00715 |
| 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 | 54.913 |
| HIERARCH ESO ISS PBL12 END | 54.717 |
| HIERARCH ESO ISS PBLA12 START | 34.4 |
| HIERARCH ESO ISS PBLA12 END | 34.9 |
| HIERARCH ESO ISS PBL13 START | 98.741 |
| HIERARCH ESO ISS PBL13 END | 98.286 |
| HIERARCH ESO ISS PBLA13 START | 40.7 |
| HIERARCH ESO ISS PBLA13 END | 41.2 |
| HIERARCH ESO ISS PBL14 START | 122.409 |
| HIERARCH ESO ISS PBL14 END | 121.343 |
| HIERARCH ESO ISS PBLA14 START | 69.823 |
| HIERARCH ESO ISS PBLA14 END | 70.428 |
| HIERARCH ESO ISS PBL23 START | 44.581 |
| HIERARCH ESO ISS PBL23 END | 44.318 |
| HIERARCH ESO ISS PBLA23 START | 48.6 |
| HIERARCH ESO ISS PBLA23 END | 49.1 |
| HIERARCH ESO ISS PBL24 START | 83.941 |
| HIERARCH ESO ISS PBL24 END | 83.154 |
| HIERARCH ESO ISS PBLA24 START | 92.113 |
| HIERARCH ESO ISS PBLA24 END | 92.922 |
| HIERARCH ESO ISS PBL34 START | 60.075 |
| HIERARCH ESO ISS PBL34 END | 59.709 |
| HIERARCH ESO ISS PBLA34 START | 122.859 |
| HIERARCH ESO ISS PBLA34 END | 123.876 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004181 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004113 |
| HIERARCH ESO ISS AMBI TEMP | 13.23 |
| HIERARCH ESO ISS AMBI FWHM START | 1.01 |
| HIERARCH ESO ISS AMBI FWHM END | 0.85 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |