Exposure
- ID
- GRAVI.2025-08-08T01:40:02.567_2
- Header ID
- GRAVI.2025-08-08T01:40:02.567
- Date updated
- 2025-08-08 01:55:39 UTC+0000
- Release date
- 2026-08-08 01:55:39 UTC+0000
- UTC Start
- 2025-08-08 01:40:02.567
- UTC End
- 2025-08-08 01:46:02.567
- MJD Start
- 60895.06947415
- MJD End
- 60895.07364081666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003218
- Ambient temperature (°C)
- 13.1
- Seeing (arcsec)
- 0.79
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 | 56.2720 | 56.2020 | 28.0000 | 28.7000 |
| U1-U3 | 101.8870 | 101.7290 | 34.4000 | 35.1000 |
| U1-U4 | 129.5640 | 129.2490 | 62.5930 | 63.3010 |
| U2-U3 | 46.3850 | 46.2970 | 42.1000 | 42.8000 |
| U2-U4 | 89.1340 | 88.9290 | 83.5780 | 84.3430 |
| U3-U4 | 62.4260 | 62.3570 | 113.0300 | 113.8370 |
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 | 60895.06947415 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417185 |
| DEC | -29.00661 |
| 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 | 56.272 |
| HIERARCH ESO ISS PBL12 END | 56.202 |
| HIERARCH ESO ISS PBLA12 START | 28.0 |
| HIERARCH ESO ISS PBLA12 END | 28.7 |
| HIERARCH ESO ISS PBL13 START | 101.887 |
| HIERARCH ESO ISS PBL13 END | 101.729 |
| HIERARCH ESO ISS PBLA13 START | 34.4 |
| HIERARCH ESO ISS PBLA13 END | 35.1 |
| HIERARCH ESO ISS PBL14 START | 129.564 |
| HIERARCH ESO ISS PBL14 END | 129.249 |
| HIERARCH ESO ISS PBLA14 START | 62.593 |
| HIERARCH ESO ISS PBLA14 END | 63.301 |
| HIERARCH ESO ISS PBL23 START | 46.385 |
| HIERARCH ESO ISS PBL23 END | 46.297 |
| HIERARCH ESO ISS PBLA23 START | 42.1 |
| HIERARCH ESO ISS PBLA23 END | 42.8 |
| HIERARCH ESO ISS PBL24 START | 89.134 |
| HIERARCH ESO ISS PBL24 END | 88.929 |
| HIERARCH ESO ISS PBLA24 START | 83.578 |
| HIERARCH ESO ISS PBLA24 END | 84.343 |
| HIERARCH ESO ISS PBL34 START | 62.426 |
| HIERARCH ESO ISS PBL34 END | 62.357 |
| HIERARCH ESO ISS PBLA34 START | 113.03 |
| HIERARCH ESO ISS PBLA34 END | 113.837 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00324 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003196 |
| HIERARCH ESO ISS AMBI TEMP | 13.1 |
| HIERARCH ESO ISS AMBI FWHM START | 0.78 |
| HIERARCH ESO ISS AMBI FWHM END | 0.8 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |