Exposure
- ID
- GRAVI.2025-08-07T23:42:53.268_2
- Header ID
- GRAVI.2025-08-07T23:42:53.268
- Date updated
- 2025-08-08 00:00:45 UTC+0000
- Release date
- 2026-08-08 00:00:45 UTC+0000
- UTC Start
- 2025-08-07 23:42:53.268
- UTC End
- 2025-08-07 23:48:53.268
- MJD Start
- 60894.98811653
- MJD End
- 60894.99228319667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0043525000000000005
- Ambient temperature (°C)
- 13.35
- Seeing (arcsec)
- 0.64
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 | 56.4510 | 56.4720 | 14.0000 | 14.9000 |
| U1-U3 | 101.8880 | 101.9750 | 19.9000 | 20.8000 |
| U1-U4 | 125.5870 | 126.1920 | 46.8270 | 47.8670 |
| U2-U3 | 46.1030 | 46.1810 | 27.1000 | 28.1000 |
| U2-U4 | 83.9240 | 84.6140 | 68.2100 | 69.1800 |
| U3-U4 | 57.7500 | 58.3120 | 99.8480 | 100.5340 |
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 | 60894.98811653 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416183 |
| DEC | -29.007 |
| 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 | 56.451 |
| HIERARCH ESO ISS PBL12 END | 56.472 |
| HIERARCH ESO ISS PBLA12 START | 14.0 |
| HIERARCH ESO ISS PBLA12 END | 14.9 |
| HIERARCH ESO ISS PBL13 START | 101.888 |
| HIERARCH ESO ISS PBL13 END | 101.975 |
| HIERARCH ESO ISS PBLA13 START | 19.9 |
| HIERARCH ESO ISS PBLA13 END | 20.8 |
| HIERARCH ESO ISS PBL14 START | 125.587 |
| HIERARCH ESO ISS PBL14 END | 126.192 |
| HIERARCH ESO ISS PBLA14 START | 46.827 |
| HIERARCH ESO ISS PBLA14 END | 47.867 |
| HIERARCH ESO ISS PBL23 START | 46.103 |
| HIERARCH ESO ISS PBL23 END | 46.181 |
| HIERARCH ESO ISS PBLA23 START | 27.1 |
| HIERARCH ESO ISS PBLA23 END | 28.1 |
| HIERARCH ESO ISS PBL24 START | 83.924 |
| HIERARCH ESO ISS PBL24 END | 84.614 |
| HIERARCH ESO ISS PBLA24 START | 68.21 |
| HIERARCH ESO ISS PBLA24 END | 69.18 |
| HIERARCH ESO ISS PBL34 START | 57.75 |
| HIERARCH ESO ISS PBL34 END | 58.312 |
| HIERARCH ESO ISS PBLA34 START | 99.848 |
| HIERARCH ESO ISS PBLA34 END | 100.534 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004848 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003857 |
| HIERARCH ESO ISS AMBI TEMP | 13.35 |
| HIERARCH ESO ISS AMBI FWHM START | 0.61 |
| HIERARCH ESO ISS AMBI FWHM END | 0.67 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |