Exposure
- ID
- GRAVI.2025-08-10T00:56:08.902_2
- Header ID
- GRAVI.2025-08-10T00:56:08.902
- Date updated
- 2025-08-10 01:15:44 UTC+0000
- Release date
- 2026-08-10 01:15:43 UTC+0000
- UTC Start
- 2025-08-10 00:56:08.902
- UTC End
- 2025-08-10 01:02:08.902
- MJD Start
- 60897.03899192
- MJD End
- 60897.04315858667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0031625000000000004
- Ambient temperature (°C)
- 12.46
- Seeing (arcsec)
- 0.77
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 | 56.5140 | 56.4880 | 24.1000 | 24.9000 |
| U1-U3 | 102.3900 | 102.3430 | 30.5000 | 31.2000 |
| U1-U4 | 130.1830 | 130.2100 | 58.3480 | 59.1420 |
| U2-U3 | 46.6350 | 46.6180 | 38.1000 | 38.9000 |
| U2-U4 | 89.2940 | 89.3870 | 79.1940 | 79.9920 |
| U3-U4 | 62.2150 | 62.3300 | 108.7060 | 109.4560 |
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 | 60897.03899192 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416777 |
| DEC | -29.00635 |
| 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 | 56.514 |
| HIERARCH ESO ISS PBL12 END | 56.488 |
| HIERARCH ESO ISS PBLA12 START | 24.1 |
| HIERARCH ESO ISS PBLA12 END | 24.9 |
| HIERARCH ESO ISS PBL13 START | 102.39 |
| HIERARCH ESO ISS PBL13 END | 102.343 |
| HIERARCH ESO ISS PBLA13 START | 30.5 |
| HIERARCH ESO ISS PBLA13 END | 31.2 |
| HIERARCH ESO ISS PBL14 START | 130.183 |
| HIERARCH ESO ISS PBL14 END | 130.21 |
| HIERARCH ESO ISS PBLA14 START | 58.348 |
| HIERARCH ESO ISS PBLA14 END | 59.142 |
| HIERARCH ESO ISS PBL23 START | 46.635 |
| HIERARCH ESO ISS PBL23 END | 46.618 |
| HIERARCH ESO ISS PBLA23 START | 38.1 |
| HIERARCH ESO ISS PBLA23 END | 38.9 |
| HIERARCH ESO ISS PBL24 START | 89.294 |
| HIERARCH ESO ISS PBL24 END | 89.387 |
| HIERARCH ESO ISS PBLA24 START | 79.194 |
| HIERARCH ESO ISS PBLA24 END | 79.992 |
| HIERARCH ESO ISS PBL34 START | 62.215 |
| HIERARCH ESO ISS PBL34 END | 62.33 |
| HIERARCH ESO ISS PBLA34 START | 108.706 |
| HIERARCH ESO ISS PBLA34 END | 109.456 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003213 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003112 |
| HIERARCH ESO ISS AMBI TEMP | 12.46 |
| HIERARCH ESO ISS AMBI FWHM START | 0.68 |
| HIERARCH ESO ISS AMBI FWHM END | 0.86 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |