Exposure
- ID
- GRAVI.2025-08-08T02:38:02.714_2
- Header ID
- GRAVI.2025-08-08T02:38:02.714
- Date updated
- 2025-08-08 02:55:47 UTC+0000
- Release date
- 2026-08-08 02:55:47 UTC+0000
- UTC Start
- 2025-08-08 02:38:02.714
- UTC End
- 2025-08-08 02:44:02.714
- MJD Start
- 60895.10975364
- MJD End
- 60895.11392030666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.001937
- Ambient temperature (°C)
- 12.84
- Seeing (arcsec)
- 1.08
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 | 55.2660 | 55.0970 | 33.4000 | 33.9000 |
| U1-U3 | 99.5610 | 99.1680 | 39.7000 | 40.2000 |
| U1-U4 | 124.3300 | 123.4090 | 68.5910 | 69.2090 |
| U2-U3 | 45.0550 | 44.8270 | 47.5000 | 48.1000 |
| U2-U4 | 85.3630 | 84.6810 | 90.5200 | 91.3090 |
| U3-U4 | 60.7420 | 60.4220 | 120.8960 | 121.8620 |
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 | 60895.10975364 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417558 |
| DEC | -29.00697 |
| 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 | 55.266 |
| HIERARCH ESO ISS PBL12 END | 55.097 |
| HIERARCH ESO ISS PBLA12 START | 33.4 |
| HIERARCH ESO ISS PBLA12 END | 33.9 |
| HIERARCH ESO ISS PBL13 START | 99.561 |
| HIERARCH ESO ISS PBL13 END | 99.168 |
| HIERARCH ESO ISS PBLA13 START | 39.7 |
| HIERARCH ESO ISS PBLA13 END | 40.2 |
| HIERARCH ESO ISS PBL14 START | 124.33 |
| HIERARCH ESO ISS PBL14 END | 123.409 |
| HIERARCH ESO ISS PBLA14 START | 68.591 |
| HIERARCH ESO ISS PBLA14 END | 69.209 |
| HIERARCH ESO ISS PBL23 START | 45.055 |
| HIERARCH ESO ISS PBL23 END | 44.827 |
| HIERARCH ESO ISS PBLA23 START | 47.5 |
| HIERARCH ESO ISS PBLA23 END | 48.1 |
| HIERARCH ESO ISS PBL24 START | 85.363 |
| HIERARCH ESO ISS PBL24 END | 84.681 |
| HIERARCH ESO ISS PBLA24 START | 90.52 |
| HIERARCH ESO ISS PBLA24 END | 91.309 |
| HIERARCH ESO ISS PBL34 START | 60.742 |
| HIERARCH ESO ISS PBL34 END | 60.422 |
| HIERARCH ESO ISS PBLA34 START | 120.896 |
| HIERARCH ESO ISS PBLA34 END | 121.862 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.001856 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002018 |
| HIERARCH ESO ISS AMBI TEMP | 12.84 |
| HIERARCH ESO ISS AMBI FWHM START | 1.18 |
| HIERARCH ESO ISS AMBI FWHM END | 0.98 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |