Exposure
- ID
- GRAVI.2023-07-31T03:06:14.391_2
- Header ID
- GRAVI.2023-07-31T03:06:14.391
- Date updated
- 2023-07-31 03:25:22 UTC+0000
- Release date
- 2024-07-31 03:25:22 UTC+0000
- UTC Start
- 2023-07-31 03:06:14.391
- UTC End
- 2023-07-31 03:12:14.391
- MJD Start
- 60156.12933323
- MJD End
- 60156.13349989666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004463999999999999
- Ambient temperature (°C)
- 18.07
- Seeing (arcsec)
- 0.815
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 | 55.3900 | 55.2320 | 32.9000 | 33.5000 |
| U1-U3 | 99.8500 | 99.4830 | 39.3000 | 39.8000 |
| U1-U4 | 125.0030 | 124.1450 | 68.1000 | 68.7180 |
| U2-U3 | 45.2210 | 45.0090 | 47.1000 | 47.6000 |
| U2-U4 | 85.8610 | 85.2260 | 89.9040 | 90.6810 |
| U3-U4 | 60.9760 | 60.6770 | 120.1520 | 121.0930 |
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 | 60156.12933323 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.41672 |
| DEC | -29.00715 |
| 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 | 55.39 |
| HIERARCH ESO ISS PBL12 END | 55.232 |
| HIERARCH ESO ISS PBLA12 START | 32.9 |
| HIERARCH ESO ISS PBLA12 END | 33.5 |
| HIERARCH ESO ISS PBL13 START | 99.85 |
| HIERARCH ESO ISS PBL13 END | 99.483 |
| HIERARCH ESO ISS PBLA13 START | 39.3 |
| HIERARCH ESO ISS PBLA13 END | 39.8 |
| HIERARCH ESO ISS PBL14 START | 125.003 |
| HIERARCH ESO ISS PBL14 END | 124.145 |
| HIERARCH ESO ISS PBLA14 START | 68.1 |
| HIERARCH ESO ISS PBLA14 END | 68.718 |
| HIERARCH ESO ISS PBL23 START | 45.221 |
| HIERARCH ESO ISS PBL23 END | 45.009 |
| HIERARCH ESO ISS PBLA23 START | 47.1 |
| HIERARCH ESO ISS PBLA23 END | 47.6 |
| HIERARCH ESO ISS PBL24 START | 85.861 |
| HIERARCH ESO ISS PBL24 END | 85.226 |
| HIERARCH ESO ISS PBLA24 START | 89.904 |
| HIERARCH ESO ISS PBLA24 END | 90.681 |
| HIERARCH ESO ISS PBL34 START | 60.976 |
| HIERARCH ESO ISS PBL34 END | 60.677 |
| HIERARCH ESO ISS PBLA34 START | 120.152 |
| HIERARCH ESO ISS PBLA34 END | 121.093 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004984 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003944 |
| HIERARCH ESO ISS AMBI TEMP | 18.07 |
| HIERARCH ESO ISS AMBI FWHM START | 0.74 |
| HIERARCH ESO ISS AMBI FWHM END | 0.89 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |