Exposure
- ID
- GRAVI.2025-08-09T23:50:35.735_2
- Header ID
- GRAVI.2025-08-09T23:50:35.735
- Date updated
- 2025-08-10 00:05:37 UTC+0000
- Release date
- 2026-08-10 00:05:37 UTC+0000
- UTC Start
- 2025-08-09 23:50:35.735
- UTC End
- 2025-08-09 23:56:35.735
- MJD Start
- 60896.99346915
- MJD End
- 60896.99763581667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0039975
- Ambient temperature (°C)
- 13.21
- Seeing (arcsec)
- 0.78
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 | 56.4990 | 56.5160 | 16.1000 | 16.9000 |
| U1-U3 | 102.0910 | 102.1650 | 22.1000 | 23.0000 |
| U1-U4 | 126.9870 | 127.5080 | 49.2920 | 50.2760 |
| U2-U3 | 46.2840 | 46.3510 | 29.4000 | 30.4000 |
| U2-U4 | 85.5150 | 86.1040 | 70.5090 | 71.4310 |
| U3-U4 | 59.0450 | 59.5220 | 101.5020 | 102.1910 |
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 | 60896.99346915 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.41669 |
| DEC | -29.00648 |
| 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 | 56.499 |
| HIERARCH ESO ISS PBL12 END | 56.516 |
| HIERARCH ESO ISS PBLA12 START | 16.1 |
| HIERARCH ESO ISS PBLA12 END | 16.9 |
| HIERARCH ESO ISS PBL13 START | 102.091 |
| HIERARCH ESO ISS PBL13 END | 102.165 |
| HIERARCH ESO ISS PBLA13 START | 22.1 |
| HIERARCH ESO ISS PBLA13 END | 23.0 |
| HIERARCH ESO ISS PBL14 START | 126.987 |
| HIERARCH ESO ISS PBL14 END | 127.508 |
| HIERARCH ESO ISS PBLA14 START | 49.292 |
| HIERARCH ESO ISS PBLA14 END | 50.276 |
| HIERARCH ESO ISS PBL23 START | 46.284 |
| HIERARCH ESO ISS PBL23 END | 46.351 |
| HIERARCH ESO ISS PBLA23 START | 29.4 |
| HIERARCH ESO ISS PBLA23 END | 30.4 |
| HIERARCH ESO ISS PBL24 START | 85.515 |
| HIERARCH ESO ISS PBL24 END | 86.104 |
| HIERARCH ESO ISS PBLA24 START | 70.509 |
| HIERARCH ESO ISS PBLA24 END | 71.431 |
| HIERARCH ESO ISS PBL34 START | 59.045 |
| HIERARCH ESO ISS PBL34 END | 59.522 |
| HIERARCH ESO ISS PBLA34 START | 101.502 |
| HIERARCH ESO ISS PBLA34 END | 102.191 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00385 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004145 |
| HIERARCH ESO ISS AMBI TEMP | 13.21 |
| HIERARCH ESO ISS AMBI FWHM START | 0.8 |
| HIERARCH ESO ISS AMBI FWHM END | 0.76 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |