Exposure
- ID
- GRAVI.2025-08-08T03:17:26.815_2
- Header ID
- GRAVI.2025-08-08T03:17:26.815
- Date updated
- 2025-08-08 03:35:47 UTC+0000
- Release date
- 2026-08-08 03:35:47 UTC+0000
- UTC Start
- 2025-08-08 03:17:26.815
- UTC End
- 2025-08-08 03:23:26.815
- MJD Start
- 60895.13711591
- MJD End
- 60895.14128257667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.001961
- Ambient temperature (°C)
- 12.91
- Seeing (arcsec)
- 0.895
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 | 54.0260 | 53.7750 | 36.3000 | 36.7000 |
| U1-U3 | 96.6840 | 96.1040 | 42.6000 | 43.0000 |
| U1-U4 | 117.6040 | 116.2600 | 72.2570 | 72.8320 |
| U2-U3 | 43.3940 | 43.0600 | 50.5000 | 50.9000 |
| U2-U4 | 80.4030 | 79.4210 | 95.4980 | 96.3530 |
| U3-U4 | 58.4500 | 58.0100 | 127.1810 | 128.2980 |
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 | 60895.13711591 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417586 |
| DEC | -29.00715 |
| 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 | 54.026 |
| HIERARCH ESO ISS PBL12 END | 53.775 |
| HIERARCH ESO ISS PBLA12 START | 36.3 |
| HIERARCH ESO ISS PBLA12 END | 36.7 |
| HIERARCH ESO ISS PBL13 START | 96.684 |
| HIERARCH ESO ISS PBL13 END | 96.104 |
| HIERARCH ESO ISS PBLA13 START | 42.6 |
| HIERARCH ESO ISS PBLA13 END | 43.0 |
| HIERARCH ESO ISS PBL14 START | 117.604 |
| HIERARCH ESO ISS PBL14 END | 116.26 |
| HIERARCH ESO ISS PBLA14 START | 72.257 |
| HIERARCH ESO ISS PBLA14 END | 72.832 |
| HIERARCH ESO ISS PBL23 START | 43.394 |
| HIERARCH ESO ISS PBL23 END | 43.06 |
| HIERARCH ESO ISS PBLA23 START | 50.5 |
| HIERARCH ESO ISS PBLA23 END | 50.9 |
| HIERARCH ESO ISS PBL24 START | 80.403 |
| HIERARCH ESO ISS PBL24 END | 79.421 |
| HIERARCH ESO ISS PBLA24 START | 95.498 |
| HIERARCH ESO ISS PBLA24 END | 96.353 |
| HIERARCH ESO ISS PBL34 START | 58.45 |
| HIERARCH ESO ISS PBL34 END | 58.01 |
| HIERARCH ESO ISS PBLA34 START | 127.181 |
| HIERARCH ESO ISS PBLA34 END | 128.298 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002053 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.001869 |
| HIERARCH ESO ISS AMBI TEMP | 12.91 |
| HIERARCH ESO ISS AMBI FWHM START | 0.82 |
| HIERARCH ESO ISS AMBI FWHM END | 0.97 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |