Exposure
- ID
- GRAVI.2023-08-30T23:54:59.326_2
- Header ID
- GRAVI.2023-08-30T23:54:59.326
- Date updated
- 2023-08-31 00:10:31 UTC+0000
- Release date
- 2024-08-31 00:10:31 UTC+0000
- UTC Start
- 2023-08-30 23:54:59.326
- UTC End
- 2023-08-31 00:00:59.326
- MJD Start
- 60186.99651998
- MJD End
- 60187.000686646665
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003042
- Ambient temperature (°C)
- 14.1
- Seeing (arcsec)
- 0.84
Observation
- ID
- 56795
- Category
- science
- Program ID
- 111.24H1.005
- 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/ STRAUBMEIER/ BRANDNER/ ROUSSELET-PERRAUT/ PERRIN/ GARCIA/ ECKART/ DE ZEEUW/ WIDMANN/ PAUMARD/ HORROBIN/ VINCENT/ DRESCHER/ BOURDAROT/ CAO/ LUTZ/ STURM/ RIBEIRO
Target
- ID
- 41849
- Name
- IRS16C
- RA
- 266.4171083333333
- DEC
- -29.007645
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 | 56.4140 | 56.3650 | 26.3000 | 27.0000 |
| U1-U3 | 102.1950 | 102.0900 | 32.6000 | 33.3000 |
| U1-U4 | 130.0840 | 129.9290 | 60.6980 | 61.4490 |
| U2-U3 | 46.5480 | 46.4940 | 40.4000 | 41.1000 |
| U2-U4 | 89.4140 | 89.3460 | 81.5820 | 82.3650 |
| U3-U4 | 62.4580 | 62.4710 | 111.0000 | 111.7840 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 111.24H1.005 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60186.99651998 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.41685 |
| DEC | -29.00732 |
| 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 | 56.414 |
| HIERARCH ESO ISS PBL12 END | 56.365 |
| HIERARCH ESO ISS PBLA12 START | 26.3 |
| HIERARCH ESO ISS PBLA12 END | 27.0 |
| HIERARCH ESO ISS PBL13 START | 102.195 |
| HIERARCH ESO ISS PBL13 END | 102.09 |
| HIERARCH ESO ISS PBLA13 START | 32.6 |
| HIERARCH ESO ISS PBLA13 END | 33.3 |
| HIERARCH ESO ISS PBL14 START | 130.084 |
| HIERARCH ESO ISS PBL14 END | 129.929 |
| HIERARCH ESO ISS PBLA14 START | 60.698 |
| HIERARCH ESO ISS PBLA14 END | 61.449 |
| HIERARCH ESO ISS PBL23 START | 46.548 |
| HIERARCH ESO ISS PBL23 END | 46.494 |
| HIERARCH ESO ISS PBLA23 START | 40.4 |
| HIERARCH ESO ISS PBLA23 END | 41.1 |
| HIERARCH ESO ISS PBL24 START | 89.414 |
| HIERARCH ESO ISS PBL24 END | 89.346 |
| HIERARCH ESO ISS PBLA24 START | 81.582 |
| HIERARCH ESO ISS PBLA24 END | 82.365 |
| HIERARCH ESO ISS PBL34 START | 62.458 |
| HIERARCH ESO ISS PBL34 END | 62.471 |
| HIERARCH ESO ISS PBLA34 START | 111.0 |
| HIERARCH ESO ISS PBLA34 END | 111.784 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003322 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002762 |
| HIERARCH ESO ISS AMBI TEMP | 14.1 |
| HIERARCH ESO ISS AMBI FWHM START | 0.85 |
| HIERARCH ESO ISS AMBI FWHM END | 0.83 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |