Exposure
- ID
- GRAVI.2025-08-08T02:08:59.640_2
- Header ID
- GRAVI.2025-08-08T02:08:59.640
- Date updated
- 2025-08-08 02:25:45 UTC+0000
- Release date
- 2026-08-08 02:25:44 UTC+0000
- UTC Start
- 2025-08-08 02:08:59.640
- UTC End
- 2025-08-08 02:14:59.640
- MJD Start
- 60895.08957917
- MJD End
- 60895.09374583667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002716
- Ambient temperature (°C)
- 12.99
- Seeing (arcsec)
- 0.88
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 | 55.8800 | 55.7630 | 30.8000 | 31.4000 |
| U1-U3 | 100.9890 | 100.7190 | 37.2000 | 37.8000 |
| U1-U4 | 127.6340 | 127.0190 | 65.6890 | 66.3520 |
| U2-U3 | 45.8770 | 45.7230 | 45.0000 | 45.6000 |
| U2-U4 | 87.7930 | 87.3450 | 87.0190 | 87.7910 |
| U3-U4 | 61.8740 | 61.6690 | 116.7790 | 117.6620 |
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 | 60895.08957917 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417464 |
| DEC | -29.00679 |
| 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 | 55.88 |
| HIERARCH ESO ISS PBL12 END | 55.763 |
| HIERARCH ESO ISS PBLA12 START | 30.8 |
| HIERARCH ESO ISS PBLA12 END | 31.4 |
| HIERARCH ESO ISS PBL13 START | 100.989 |
| HIERARCH ESO ISS PBL13 END | 100.719 |
| HIERARCH ESO ISS PBLA13 START | 37.2 |
| HIERARCH ESO ISS PBLA13 END | 37.8 |
| HIERARCH ESO ISS PBL14 START | 127.634 |
| HIERARCH ESO ISS PBL14 END | 127.019 |
| HIERARCH ESO ISS PBLA14 START | 65.689 |
| HIERARCH ESO ISS PBLA14 END | 66.352 |
| HIERARCH ESO ISS PBL23 START | 45.877 |
| HIERARCH ESO ISS PBL23 END | 45.723 |
| HIERARCH ESO ISS PBLA23 START | 45.0 |
| HIERARCH ESO ISS PBLA23 END | 45.6 |
| HIERARCH ESO ISS PBL24 START | 87.793 |
| HIERARCH ESO ISS PBL24 END | 87.345 |
| HIERARCH ESO ISS PBLA24 START | 87.019 |
| HIERARCH ESO ISS PBLA24 END | 87.791 |
| HIERARCH ESO ISS PBL34 START | 61.874 |
| HIERARCH ESO ISS PBL34 END | 61.669 |
| HIERARCH ESO ISS PBLA34 START | 116.779 |
| HIERARCH ESO ISS PBLA34 END | 117.662 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002542 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00289 |
| HIERARCH ESO ISS AMBI TEMP | 12.99 |
| HIERARCH ESO ISS AMBI FWHM START | 0.92 |
| HIERARCH ESO ISS AMBI FWHM END | 0.84 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |