Exposure
- ID
- GRAVI.2023-07-31T02:17:20.267_2
- Header ID
- GRAVI.2023-07-31T02:17:20.267
- Date updated
- 2023-07-31 02:30:24 UTC+0000
- Release date
- 2024-07-31 02:30:24 UTC+0000
- UTC Start
- 2023-07-31 02:17:20.267
- UTC End
- 2023-07-31 02:23:20.267
- MJD Start
- 60156.09537346
- MJD End
- 60156.09954012666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003613
- Ambient temperature (°C)
- 17.88
- Seeing (arcsec)
- 0.9450000000000001
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 | 56.2310 | 56.1540 | 28.4000 | 29.1000 |
| U1-U3 | 101.7930 | 101.6190 | 34.8000 | 35.4000 |
| U1-U4 | 129.3800 | 129.0210 | 63.0190 | 63.7290 |
| U2-U3 | 46.3330 | 46.2360 | 42.5000 | 43.2000 |
| U2-U4 | 89.0150 | 88.7760 | 84.0380 | 84.8120 |
| U3-U4 | 62.3870 | 62.2980 | 113.5140 | 114.3390 |
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 | 60156.09537346 |
| 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 | 56.231 |
| HIERARCH ESO ISS PBL12 END | 56.154 |
| HIERARCH ESO ISS PBLA12 START | 28.4 |
| HIERARCH ESO ISS PBLA12 END | 29.1 |
| HIERARCH ESO ISS PBL13 START | 101.793 |
| HIERARCH ESO ISS PBL13 END | 101.619 |
| HIERARCH ESO ISS PBLA13 START | 34.8 |
| HIERARCH ESO ISS PBLA13 END | 35.4 |
| HIERARCH ESO ISS PBL14 START | 129.38 |
| HIERARCH ESO ISS PBL14 END | 129.021 |
| HIERARCH ESO ISS PBLA14 START | 63.019 |
| HIERARCH ESO ISS PBLA14 END | 63.729 |
| HIERARCH ESO ISS PBL23 START | 46.333 |
| HIERARCH ESO ISS PBL23 END | 46.236 |
| HIERARCH ESO ISS PBLA23 START | 42.5 |
| HIERARCH ESO ISS PBLA23 END | 43.2 |
| HIERARCH ESO ISS PBL24 START | 89.015 |
| HIERARCH ESO ISS PBL24 END | 88.776 |
| HIERARCH ESO ISS PBLA24 START | 84.038 |
| HIERARCH ESO ISS PBLA24 END | 84.812 |
| HIERARCH ESO ISS PBL34 START | 62.387 |
| HIERARCH ESO ISS PBL34 END | 62.298 |
| HIERARCH ESO ISS PBLA34 START | 113.514 |
| HIERARCH ESO ISS PBLA34 END | 114.339 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003613 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003613 |
| HIERARCH ESO ISS AMBI TEMP | 17.88 |
| HIERARCH ESO ISS AMBI FWHM START | 0.93 |
| HIERARCH ESO ISS AMBI FWHM END | 0.96 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |