Exposure
- ID
- GRAVI.2025-08-08T03:32:29.853_2
- Header ID
- GRAVI.2025-08-08T03:32:29.853
- Date updated
- 2025-08-08 03:50:44 UTC+0000
- Release date
- 2026-08-08 03:50:44 UTC+0000
- UTC Start
- 2025-08-08 03:32:29.853
- UTC End
- 2025-08-08 03:38:29.853
- MJD Start
- 60895.14756774
- MJD End
- 60895.15173440667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002569
- Ambient temperature (°C)
- 12.51
- Seeing (arcsec)
- 0.69
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 | 53.4180 | 53.1320 | 37.3000 | 37.6000 |
| U1-U3 | 95.2810 | 94.6240 | 43.5000 | 43.9000 |
| U1-U4 | 114.3560 | 112.8450 | 73.5920 | 74.1580 |
| U2-U3 | 42.5870 | 42.2100 | 51.4000 | 51.8000 |
| U2-U4 | 78.0370 | 76.9440 | 97.5210 | 98.4200 |
| U3-U4 | 57.3990 | 56.9240 | 129.8360 | 131.0270 |
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 | 60895.14756774 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | SGRA |
| RA | 266.417594 |
| DEC | -29.00721 |
| 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 | 53.418 |
| HIERARCH ESO ISS PBL12 END | 53.132 |
| HIERARCH ESO ISS PBLA12 START | 37.3 |
| HIERARCH ESO ISS PBLA12 END | 37.6 |
| HIERARCH ESO ISS PBL13 START | 95.281 |
| HIERARCH ESO ISS PBL13 END | 94.624 |
| HIERARCH ESO ISS PBLA13 START | 43.5 |
| HIERARCH ESO ISS PBLA13 END | 43.9 |
| HIERARCH ESO ISS PBL14 START | 114.356 |
| HIERARCH ESO ISS PBL14 END | 112.845 |
| HIERARCH ESO ISS PBLA14 START | 73.592 |
| HIERARCH ESO ISS PBLA14 END | 74.158 |
| HIERARCH ESO ISS PBL23 START | 42.587 |
| HIERARCH ESO ISS PBL23 END | 42.21 |
| HIERARCH ESO ISS PBLA23 START | 51.4 |
| HIERARCH ESO ISS PBLA23 END | 51.8 |
| HIERARCH ESO ISS PBL24 START | 78.037 |
| HIERARCH ESO ISS PBL24 END | 76.944 |
| HIERARCH ESO ISS PBLA24 START | 97.521 |
| HIERARCH ESO ISS PBLA24 END | 98.42 |
| HIERARCH ESO ISS PBL34 START | 57.399 |
| HIERARCH ESO ISS PBL34 END | 56.924 |
| HIERARCH ESO ISS PBLA34 START | 129.836 |
| HIERARCH ESO ISS PBLA34 END | 131.027 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002571 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002567 |
| HIERARCH ESO ISS AMBI TEMP | 12.51 |
| HIERARCH ESO ISS AMBI FWHM START | 0.68 |
| 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 |