Exposure
- ID
- GRAVI.2025-08-10T01:25:26.976_2
- Header ID
- GRAVI.2025-08-10T01:25:26.976
- Date updated
- 2025-08-10 01:40:37 UTC+0000
- Release date
- 2026-08-10 01:40:37 UTC+0000
- UTC Start
- 2025-08-10 01:25:26.976
- UTC End
- 2025-08-10 01:31:26.976
- MJD Start
- 60897.05934
- MJD End
- 60897.063506666665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003943
- Ambient temperature (°C)
- 12.04
- Seeing (arcsec)
- 0.8300000000000001
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 | 56.3370 | 56.2750 | 27.3000 | 28.0000 |
| U1-U3 | 102.0290 | 101.8930 | 33.7000 | 34.4000 |
| U1-U4 | 129.8260 | 129.5760 | 61.8220 | 62.5500 |
| U2-U3 | 46.4620 | 46.3880 | 41.4000 | 42.1000 |
| U2-U4 | 89.2910 | 89.1410 | 82.7580 | 83.5330 |
| U3-U4 | 62.4650 | 62.4290 | 112.1840 | 112.9840 |
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 | 60897.05934 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417244 |
| DEC | -29.00628 |
| 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 | 56.337 |
| HIERARCH ESO ISS PBL12 END | 56.275 |
| HIERARCH ESO ISS PBLA12 START | 27.3 |
| HIERARCH ESO ISS PBLA12 END | 28.0 |
| HIERARCH ESO ISS PBL13 START | 102.029 |
| HIERARCH ESO ISS PBL13 END | 101.893 |
| HIERARCH ESO ISS PBLA13 START | 33.7 |
| HIERARCH ESO ISS PBLA13 END | 34.4 |
| HIERARCH ESO ISS PBL14 START | 129.826 |
| HIERARCH ESO ISS PBL14 END | 129.576 |
| HIERARCH ESO ISS PBLA14 START | 61.822 |
| HIERARCH ESO ISS PBLA14 END | 62.55 |
| HIERARCH ESO ISS PBL23 START | 46.462 |
| HIERARCH ESO ISS PBL23 END | 46.388 |
| HIERARCH ESO ISS PBLA23 START | 41.4 |
| HIERARCH ESO ISS PBLA23 END | 42.1 |
| HIERARCH ESO ISS PBL24 START | 89.291 |
| HIERARCH ESO ISS PBL24 END | 89.141 |
| HIERARCH ESO ISS PBLA24 START | 82.758 |
| HIERARCH ESO ISS PBLA24 END | 83.533 |
| HIERARCH ESO ISS PBL34 START | 62.465 |
| HIERARCH ESO ISS PBL34 END | 62.429 |
| HIERARCH ESO ISS PBLA34 START | 112.184 |
| HIERARCH ESO ISS PBLA34 END | 112.984 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003673 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004213 |
| HIERARCH ESO ISS AMBI TEMP | 12.04 |
| HIERARCH ESO ISS AMBI FWHM START | 0.89 |
| HIERARCH ESO ISS AMBI FWHM END | 0.77 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |