Exposure
- ID
- GRAVI.2025-08-08T02:16:05.659_2
- Header ID
- GRAVI.2025-08-08T02:16:05.659
- Date updated
- 2025-08-08 02:30:35 UTC+0000
- Release date
- 2026-08-08 02:30:35 UTC+0000
- UTC Start
- 2025-08-08 02:16:05.659
- UTC End
- 2025-08-08 02:22:05.659
- MJD Start
- 60895.09450994
- MJD End
- 60895.09867660666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002756
- Ambient temperature (°C)
- 12.93
- Seeing (arcsec)
- 0.8999999999999999
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 | 55.7510 | 55.6230 | 31.5000 | 32.1000 |
| U1-U3 | 100.6910 | 100.3920 | 37.9000 | 38.4000 |
| U1-U4 | 126.9550 | 126.2650 | 66.4160 | 67.0680 |
| U2-U3 | 45.7070 | 45.5340 | 45.6000 | 46.2000 |
| U2-U4 | 87.2990 | 86.7920 | 87.8670 | 88.6430 |
| U3-U4 | 61.6470 | 61.4120 | 117.7490 | 118.6520 |
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 | 60895.09450994 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.41749 |
| DEC | -29.00685 |
| 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 | 55.751 |
| HIERARCH ESO ISS PBL12 END | 55.623 |
| HIERARCH ESO ISS PBLA12 START | 31.5 |
| HIERARCH ESO ISS PBLA12 END | 32.1 |
| HIERARCH ESO ISS PBL13 START | 100.691 |
| HIERARCH ESO ISS PBL13 END | 100.392 |
| HIERARCH ESO ISS PBLA13 START | 37.9 |
| HIERARCH ESO ISS PBLA13 END | 38.4 |
| HIERARCH ESO ISS PBL14 START | 126.955 |
| HIERARCH ESO ISS PBL14 END | 126.265 |
| HIERARCH ESO ISS PBLA14 START | 66.416 |
| HIERARCH ESO ISS PBLA14 END | 67.068 |
| HIERARCH ESO ISS PBL23 START | 45.707 |
| HIERARCH ESO ISS PBL23 END | 45.534 |
| HIERARCH ESO ISS PBLA23 START | 45.6 |
| HIERARCH ESO ISS PBLA23 END | 46.2 |
| HIERARCH ESO ISS PBL24 START | 87.299 |
| HIERARCH ESO ISS PBL24 END | 86.792 |
| HIERARCH ESO ISS PBLA24 START | 87.867 |
| HIERARCH ESO ISS PBLA24 END | 88.643 |
| HIERARCH ESO ISS PBL34 START | 61.647 |
| HIERARCH ESO ISS PBL34 END | 61.412 |
| HIERARCH ESO ISS PBLA34 START | 117.749 |
| HIERARCH ESO ISS PBLA34 END | 118.652 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00289 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002622 |
| HIERARCH ESO ISS AMBI TEMP | 12.93 |
| HIERARCH ESO ISS AMBI FWHM START | 0.84 |
| HIERARCH ESO ISS AMBI FWHM END | 0.96 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |