Exposure
- ID
- GRAVI.2025-08-10T00:41:41.865_2
- Header ID
- GRAVI.2025-08-10T00:41:41.865
- Date updated
- 2025-08-10 00:55:47 UTC+0000
- Release date
- 2026-08-10 00:55:47 UTC+0000
- UTC Start
- 2025-08-10 00:41:41.865
- UTC End
- 2025-08-10 00:47:41.865
- MJD Start
- 60897.02895677
- MJD End
- 60897.03312343667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0034590000000000003
- Ambient temperature (°C)
- 12.6
- Seeing (arcsec)
- 0.79
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 | 56.5500 | 56.5380 | 22.5000 | 23.2000 |
| U1-U3 | 102.4340 | 102.4240 | 28.7000 | 29.5000 |
| U1-U4 | 129.9190 | 130.0720 | 56.5180 | 57.3480 |
| U2-U3 | 46.6340 | 46.6410 | 36.4000 | 37.2000 |
| U2-U4 | 88.8980 | 89.1070 | 77.3850 | 78.2010 |
| U3-U4 | 61.8310 | 62.0250 | 107.0640 | 107.7940 |
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 | 60897.02895677 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416735 |
| DEC | -29.00641 |
| 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 | 56.55 |
| HIERARCH ESO ISS PBL12 END | 56.538 |
| HIERARCH ESO ISS PBLA12 START | 22.5 |
| HIERARCH ESO ISS PBLA12 END | 23.2 |
| HIERARCH ESO ISS PBL13 START | 102.434 |
| HIERARCH ESO ISS PBL13 END | 102.424 |
| HIERARCH ESO ISS PBLA13 START | 28.7 |
| HIERARCH ESO ISS PBLA13 END | 29.5 |
| HIERARCH ESO ISS PBL14 START | 129.919 |
| HIERARCH ESO ISS PBL14 END | 130.072 |
| HIERARCH ESO ISS PBLA14 START | 56.518 |
| HIERARCH ESO ISS PBLA14 END | 57.348 |
| HIERARCH ESO ISS PBL23 START | 46.634 |
| HIERARCH ESO ISS PBL23 END | 46.641 |
| HIERARCH ESO ISS PBLA23 START | 36.4 |
| HIERARCH ESO ISS PBLA23 END | 37.2 |
| HIERARCH ESO ISS PBL24 START | 88.898 |
| HIERARCH ESO ISS PBL24 END | 89.107 |
| HIERARCH ESO ISS PBLA24 START | 77.385 |
| HIERARCH ESO ISS PBLA24 END | 78.201 |
| HIERARCH ESO ISS PBL34 START | 61.831 |
| HIERARCH ESO ISS PBL34 END | 62.025 |
| HIERARCH ESO ISS PBLA34 START | 107.064 |
| HIERARCH ESO ISS PBLA34 END | 107.794 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003746 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003172 |
| HIERARCH ESO ISS AMBI TEMP | 12.6 |
| HIERARCH ESO ISS AMBI FWHM START | 0.72 |
| 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 |