Exposure
- ID
- GRAVI.2025-08-10T02:40:27.168_2
- Header ID
- GRAVI.2025-08-10T02:40:27.168
- Date updated
- 2025-08-10 02:55:26 UTC+0000
- Release date
- 2026-08-10 02:55:26 UTC+0000
- UTC Start
- 2025-08-10 02:40:27.168
- UTC End
- 2025-08-10 02:46:27.168
- MJD Start
- 60897.11142555
- MJD End
- 60897.115592216665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003079
- Ambient temperature (°C)
- 12.39
- Seeing (arcsec)
- 0.685
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 | 54.9890 | 54.7990 | 34.2000 | 34.7000 |
| U1-U3 | 98.9190 | 98.4760 | 40.5000 | 41.0000 |
| U1-U4 | 122.8250 | 121.7880 | 69.5730 | 70.1810 |
| U2-U3 | 44.6830 | 44.4280 | 48.4000 | 48.9000 |
| U2-U4 | 84.2490 | 83.4820 | 91.7830 | 92.5890 |
| U3-U4 | 60.2190 | 59.8610 | 122.4490 | 123.4570 |
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 | 60897.11142555 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417398 |
| DEC | -29.00664 |
| 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 | 54.989 |
| HIERARCH ESO ISS PBL12 END | 54.799 |
| HIERARCH ESO ISS PBLA12 START | 34.2 |
| HIERARCH ESO ISS PBLA12 END | 34.7 |
| HIERARCH ESO ISS PBL13 START | 98.919 |
| HIERARCH ESO ISS PBL13 END | 98.476 |
| HIERARCH ESO ISS PBLA13 START | 40.5 |
| HIERARCH ESO ISS PBLA13 END | 41.0 |
| HIERARCH ESO ISS PBL14 START | 122.825 |
| HIERARCH ESO ISS PBL14 END | 121.788 |
| HIERARCH ESO ISS PBLA14 START | 69.573 |
| HIERARCH ESO ISS PBLA14 END | 70.181 |
| HIERARCH ESO ISS PBL23 START | 44.683 |
| HIERARCH ESO ISS PBL23 END | 44.428 |
| HIERARCH ESO ISS PBLA23 START | 48.4 |
| HIERARCH ESO ISS PBLA23 END | 48.9 |
| HIERARCH ESO ISS PBL24 START | 84.249 |
| HIERARCH ESO ISS PBL24 END | 83.482 |
| HIERARCH ESO ISS PBLA24 START | 91.783 |
| HIERARCH ESO ISS PBLA24 END | 92.589 |
| HIERARCH ESO ISS PBL34 START | 60.219 |
| HIERARCH ESO ISS PBL34 END | 59.861 |
| HIERARCH ESO ISS PBLA34 START | 122.449 |
| HIERARCH ESO ISS PBLA34 END | 123.457 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003051 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003107 |
| HIERARCH ESO ISS AMBI TEMP | 12.39 |
| HIERARCH ESO ISS AMBI FWHM START | 0.67 |
| HIERARCH ESO ISS AMBI FWHM END | 0.7 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |