Exposure
- ID
- GRAVI.2023-07-31T23:59:27.730_2
- Header ID
- GRAVI.2023-07-31T23:59:27.730
- Date updated
- 2023-08-01 00:15:24 UTC+0000
- Release date
- 2024-08-01 00:15:24 UTC+0000
- UTC Start
- 2023-07-31 23:59:27.730
- UTC End
- 2023-08-01 00:05:27.730
- MJD Start
- 60156.9996265
- MJD End
- 60157.00379316667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0029265000000000003
- Ambient temperature (°C)
- 18.35
- Seeing (arcsec)
- 1.02
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 | 56.4090 | 56.4300 | 12.3000 | 13.1000 |
| U1-U3 | 101.7050 | 101.7990 | 18.0000 | 19.0000 |
| U1-U4 | 124.2930 | 124.9590 | 44.6830 | 45.7770 |
| U2-U3 | 45.9380 | 46.0220 | 25.2000 | 26.2000 |
| U2-U4 | 82.4340 | 83.2040 | 66.2130 | 67.2320 |
| U3-U4 | 56.5220 | 57.1590 | 98.4810 | 99.1710 |
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 | 60156.9996265 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.416855 |
| DEC | -29.00712 |
| 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 | 56.409 |
| HIERARCH ESO ISS PBL12 END | 56.43 |
| HIERARCH ESO ISS PBLA12 START | 12.3 |
| HIERARCH ESO ISS PBLA12 END | 13.1 |
| HIERARCH ESO ISS PBL13 START | 101.705 |
| HIERARCH ESO ISS PBL13 END | 101.799 |
| HIERARCH ESO ISS PBLA13 START | 18.0 |
| HIERARCH ESO ISS PBLA13 END | 19.0 |
| HIERARCH ESO ISS PBL14 START | 124.293 |
| HIERARCH ESO ISS PBL14 END | 124.959 |
| HIERARCH ESO ISS PBLA14 START | 44.683 |
| HIERARCH ESO ISS PBLA14 END | 45.777 |
| HIERARCH ESO ISS PBL23 START | 45.938 |
| HIERARCH ESO ISS PBL23 END | 46.022 |
| HIERARCH ESO ISS PBLA23 START | 25.2 |
| HIERARCH ESO ISS PBLA23 END | 26.2 |
| HIERARCH ESO ISS PBL24 START | 82.434 |
| HIERARCH ESO ISS PBL24 END | 83.204 |
| HIERARCH ESO ISS PBLA24 START | 66.213 |
| HIERARCH ESO ISS PBLA24 END | 67.232 |
| HIERARCH ESO ISS PBL34 START | 56.522 |
| HIERARCH ESO ISS PBL34 END | 57.159 |
| HIERARCH ESO ISS PBLA34 START | 98.481 |
| HIERARCH ESO ISS PBLA34 END | 99.171 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003121 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.002732 |
| HIERARCH ESO ISS AMBI TEMP | 18.35 |
| HIERARCH ESO ISS AMBI FWHM START | 0.99 |
| HIERARCH ESO ISS AMBI FWHM END | 1.05 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |