Exposure
- ID
- GRAVI.2023-07-31T04:04:41.539_2
- Header ID
- GRAVI.2023-07-31T04:04:41.539
- Date updated
- 2023-07-31 04:20:19 UTC+0000
- Release date
- 2024-07-31 04:20:19 UTC+0000
- UTC Start
- 2023-07-31 04:04:41.539
- UTC End
- 2023-07-31 04:10:41.539
- MJD Start
- 60156.16992522
- MJD End
- 60156.17409188666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0046055
- Ambient temperature (°C)
- 18.17
- Seeing (arcsec)
- 0.865
Observation
- ID
- 56474
- Category
- science
- Program ID
- 111.24H1.004
- 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/ 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 | 53.4660 | 53.1820 | 37.2000 | 37.6000 |
| U1-U3 | 95.3930 | 94.7390 | 43.5000 | 43.8000 |
| U1-U4 | 114.6150 | 113.1070 | 73.4910 | 74.0600 |
| U2-U3 | 42.6520 | 42.2760 | 51.4000 | 51.7000 |
| U2-U4 | 78.2240 | 77.1330 | 97.3640 | 98.2640 |
| U3-U4 | 57.4800 | 57.0060 | 129.6290 | 130.8210 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 111.24H1.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60156.16992522 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.417098 |
| DEC | -29.00725 |
| 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 | 53.466 |
| HIERARCH ESO ISS PBL12 END | 53.182 |
| HIERARCH ESO ISS PBLA12 START | 37.2 |
| HIERARCH ESO ISS PBLA12 END | 37.6 |
| HIERARCH ESO ISS PBL13 START | 95.393 |
| HIERARCH ESO ISS PBL13 END | 94.739 |
| HIERARCH ESO ISS PBLA13 START | 43.5 |
| HIERARCH ESO ISS PBLA13 END | 43.8 |
| HIERARCH ESO ISS PBL14 START | 114.615 |
| HIERARCH ESO ISS PBL14 END | 113.107 |
| HIERARCH ESO ISS PBLA14 START | 73.491 |
| HIERARCH ESO ISS PBLA14 END | 74.06 |
| HIERARCH ESO ISS PBL23 START | 42.652 |
| HIERARCH ESO ISS PBL23 END | 42.276 |
| HIERARCH ESO ISS PBLA23 START | 51.4 |
| HIERARCH ESO ISS PBLA23 END | 51.7 |
| HIERARCH ESO ISS PBL24 START | 78.224 |
| HIERARCH ESO ISS PBL24 END | 77.133 |
| HIERARCH ESO ISS PBLA24 START | 97.364 |
| HIERARCH ESO ISS PBLA24 END | 98.264 |
| HIERARCH ESO ISS PBL34 START | 57.48 |
| HIERARCH ESO ISS PBL34 END | 57.006 |
| HIERARCH ESO ISS PBLA34 START | 129.629 |
| HIERARCH ESO ISS PBLA34 END | 130.821 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004087 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005124 |
| HIERARCH ESO ISS AMBI TEMP | 18.17 |
| HIERARCH ESO ISS AMBI FWHM START | 0.91 |
| HIERARCH ESO ISS AMBI FWHM END | 0.82 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |