Exposure
- ID
- GRAVI.2025-08-08T00:56:23.456_2
- Header ID
- GRAVI.2025-08-08T00:56:23.456
- Date updated
- 2025-08-08 01:10:45 UTC+0000
- Release date
- 2026-08-08 01:10:45 UTC+0000
- UTC Start
- 2025-08-08 00:56:23.456
- UTC End
- 2025-08-08 01:02:23.456
- MJD Start
- 60895.03916037
- MJD End
- 60895.04332703666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0036414999999999998
- Ambient temperature (°C)
- 13.39
- Seeing (arcsec)
- 0.9
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 | 56.5370 | 56.5180 | 23.3000 | 24.0000 |
| U1-U3 | 102.4230 | 102.3960 | 29.6000 | 30.3000 |
| U1-U4 | 130.0780 | 130.1720 | 57.3970 | 58.2130 |
| U2-U3 | 46.6410 | 46.6370 | 37.2000 | 38.0000 |
| U2-U4 | 89.1160 | 89.2710 | 78.2490 | 79.0590 |
| U3-U4 | 62.0330 | 62.1900 | 107.8390 | 108.5810 |
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 | 60895.03916037 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.416288 |
| DEC | -29.00683 |
| 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 | 56.537 |
| HIERARCH ESO ISS PBL12 END | 56.518 |
| HIERARCH ESO ISS PBLA12 START | 23.3 |
| HIERARCH ESO ISS PBLA12 END | 24.0 |
| HIERARCH ESO ISS PBL13 START | 102.423 |
| HIERARCH ESO ISS PBL13 END | 102.396 |
| HIERARCH ESO ISS PBLA13 START | 29.6 |
| HIERARCH ESO ISS PBLA13 END | 30.3 |
| HIERARCH ESO ISS PBL14 START | 130.078 |
| HIERARCH ESO ISS PBL14 END | 130.172 |
| HIERARCH ESO ISS PBLA14 START | 57.397 |
| HIERARCH ESO ISS PBLA14 END | 58.213 |
| HIERARCH ESO ISS PBL23 START | 46.641 |
| HIERARCH ESO ISS PBL23 END | 46.637 |
| HIERARCH ESO ISS PBLA23 START | 37.2 |
| HIERARCH ESO ISS PBLA23 END | 38.0 |
| HIERARCH ESO ISS PBL24 START | 89.116 |
| HIERARCH ESO ISS PBL24 END | 89.271 |
| HIERARCH ESO ISS PBLA24 START | 78.249 |
| HIERARCH ESO ISS PBLA24 END | 79.059 |
| HIERARCH ESO ISS PBL34 START | 62.033 |
| HIERARCH ESO ISS PBL34 END | 62.19 |
| HIERARCH ESO ISS PBLA34 START | 107.839 |
| HIERARCH ESO ISS PBLA34 END | 108.581 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003699 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003584 |
| HIERARCH ESO ISS AMBI TEMP | 13.39 |
| HIERARCH ESO ISS AMBI FWHM START | 0.92 |
| HIERARCH ESO ISS AMBI FWHM END | 0.88 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.0980 |
| HIERARCH ESO FT ROBJ DELTA | -290027.6520 |