Exposure
- ID
- GRAVI.2025-08-10T00:27:32.829_2
- Header ID
- GRAVI.2025-08-10T00:27:32.829
- Date updated
- 2025-08-10 00:45:43 UTC+0000
- Release date
- 2026-08-10 00:45:43 UTC+0000
- UTC Start
- 2025-08-10 00:27:32.829
- UTC End
- 2025-08-10 00:33:32.829
- MJD Start
- 60897.01912996
- MJD End
- 60897.02329662666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0041895000000000005
- Ambient temperature (°C)
- 12.45
- Seeing (arcsec)
- 0.755
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 | 56.5590 | 56.5580 | 20.8000 | 21.5000 |
| U1-U3 | 102.4070 | 102.4270 | 27.0000 | 27.8000 |
| U1-U4 | 129.4010 | 129.6680 | 54.6380 | 55.5070 |
| U2-U3 | 46.5850 | 46.6130 | 34.5000 | 35.4000 |
| U2-U4 | 88.2620 | 88.5820 | 75.5640 | 76.4020 |
| U3-U4 | 61.2840 | 61.5550 | 105.4910 | 106.2050 |
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 | 60897.01912996 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416711 |
| DEC | -29.00646 |
| 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 | 56.559 |
| HIERARCH ESO ISS PBL12 END | 56.558 |
| HIERARCH ESO ISS PBLA12 START | 20.8 |
| HIERARCH ESO ISS PBLA12 END | 21.5 |
| HIERARCH ESO ISS PBL13 START | 102.407 |
| HIERARCH ESO ISS PBL13 END | 102.427 |
| HIERARCH ESO ISS PBLA13 START | 27.0 |
| HIERARCH ESO ISS PBLA13 END | 27.8 |
| HIERARCH ESO ISS PBL14 START | 129.401 |
| HIERARCH ESO ISS PBL14 END | 129.668 |
| HIERARCH ESO ISS PBLA14 START | 54.638 |
| HIERARCH ESO ISS PBLA14 END | 55.507 |
| HIERARCH ESO ISS PBL23 START | 46.585 |
| HIERARCH ESO ISS PBL23 END | 46.613 |
| HIERARCH ESO ISS PBLA23 START | 34.5 |
| HIERARCH ESO ISS PBLA23 END | 35.4 |
| HIERARCH ESO ISS PBL24 START | 88.262 |
| HIERARCH ESO ISS PBL24 END | 88.582 |
| HIERARCH ESO ISS PBLA24 START | 75.564 |
| HIERARCH ESO ISS PBLA24 END | 76.402 |
| HIERARCH ESO ISS PBL34 START | 61.284 |
| HIERARCH ESO ISS PBL34 END | 61.555 |
| HIERARCH ESO ISS PBLA34 START | 105.491 |
| HIERARCH ESO ISS PBLA34 END | 106.205 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004766 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003613 |
| HIERARCH ESO ISS AMBI TEMP | 12.45 |
| HIERARCH ESO ISS AMBI FWHM START | 0.71 |
| 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 |