Exposure
- ID
- GRAVI.2025-08-10T03:02:33.223_2
- Header ID
- GRAVI.2025-08-10T03:02:33.223
- Date updated
- 2025-08-10 03:15:42 UTC+0000
- Release date
- 2026-08-10 03:15:42 UTC+0000
- UTC Start
- 2025-08-10 03:02:33.223
- UTC End
- 2025-08-10 03:08:33.223
- MJD Start
- 60897.12677342
- MJD End
- 60897.13094008667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002831
- Ambient temperature (°C)
- 12.28
- Seeing (arcsec)
- 0.8
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 | 54.2830 | 54.0460 | 35.8000 | 36.3000 |
| U1-U3 | 97.2800 | 96.7320 | 42.1000 | 42.6000 |
| U1-U4 | 118.9920 | 117.7160 | 71.6220 | 72.2060 |
| U2-U3 | 43.7370 | 43.4210 | 50.0000 | 50.4000 |
| U2-U4 | 81.4210 | 80.4850 | 94.5800 | 95.4240 |
| U3-U4 | 58.9110 | 58.4870 | 125.9930 | 127.0860 |
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 | 60897.12677342 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417388 |
| DEC | -29.00669 |
| 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 | 54.283 |
| HIERARCH ESO ISS PBL12 END | 54.046 |
| HIERARCH ESO ISS PBLA12 START | 35.8 |
| HIERARCH ESO ISS PBLA12 END | 36.3 |
| HIERARCH ESO ISS PBL13 START | 97.28 |
| HIERARCH ESO ISS PBL13 END | 96.732 |
| HIERARCH ESO ISS PBLA13 START | 42.1 |
| HIERARCH ESO ISS PBLA13 END | 42.6 |
| HIERARCH ESO ISS PBL14 START | 118.992 |
| HIERARCH ESO ISS PBL14 END | 117.716 |
| HIERARCH ESO ISS PBLA14 START | 71.622 |
| HIERARCH ESO ISS PBLA14 END | 72.206 |
| HIERARCH ESO ISS PBL23 START | 43.737 |
| HIERARCH ESO ISS PBL23 END | 43.421 |
| HIERARCH ESO ISS PBLA23 START | 50.0 |
| HIERARCH ESO ISS PBLA23 END | 50.4 |
| HIERARCH ESO ISS PBL24 START | 81.421 |
| HIERARCH ESO ISS PBL24 END | 80.485 |
| HIERARCH ESO ISS PBLA24 START | 94.58 |
| HIERARCH ESO ISS PBLA24 END | 95.424 |
| HIERARCH ESO ISS PBL34 START | 58.911 |
| HIERARCH ESO ISS PBL34 END | 58.487 |
| HIERARCH ESO ISS PBLA34 START | 125.993 |
| HIERARCH ESO ISS PBLA34 END | 127.086 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002539 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003123 |
| HIERARCH ESO ISS AMBI TEMP | 12.28 |
| HIERARCH ESO ISS AMBI FWHM START | 0.8 |
| 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 |