Exposure
- ID
- GRAVI.2023-07-31T23:46:39.697_2
- Header ID
- GRAVI.2023-07-31T23:46:39.697
- Date updated
- 2023-08-01 00:00:26 UTC+0000
- Release date
- 2024-08-01 00:00:26 UTC+0000
- UTC Start
- 2023-07-31 23:46:39.697
- UTC End
- 2023-07-31 23:52:39.697
- MJD Start
- 60156.99073723
- MJD End
- 60156.994903896666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003621
- Ambient temperature (°C)
- 18.26
- 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 | 56.3660 | 56.3880 | 10.5000 | 11.4000 |
| U1-U3 | 101.5200 | 101.6150 | 16.1000 | 17.1000 |
| U1-U4 | 122.9170 | 123.6280 | 42.4600 | 43.6040 |
| U2-U3 | 45.7680 | 45.8550 | 23.1000 | 24.2000 |
| U2-U4 | 80.8170 | 81.6570 | 64.1350 | 65.2060 |
| U3-U4 | 55.1690 | 55.8750 | 97.1180 | 97.8130 |
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 | 60156.99073723 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.416876 |
| DEC | -29.00718 |
| 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 | 56.366 |
| HIERARCH ESO ISS PBL12 END | 56.388 |
| HIERARCH ESO ISS PBLA12 START | 10.5 |
| HIERARCH ESO ISS PBLA12 END | 11.4 |
| HIERARCH ESO ISS PBL13 START | 101.52 |
| HIERARCH ESO ISS PBL13 END | 101.615 |
| HIERARCH ESO ISS PBLA13 START | 16.1 |
| HIERARCH ESO ISS PBLA13 END | 17.1 |
| HIERARCH ESO ISS PBL14 START | 122.917 |
| HIERARCH ESO ISS PBL14 END | 123.628 |
| HIERARCH ESO ISS PBLA14 START | 42.46 |
| HIERARCH ESO ISS PBLA14 END | 43.604 |
| HIERARCH ESO ISS PBL23 START | 45.768 |
| HIERARCH ESO ISS PBL23 END | 45.855 |
| HIERARCH ESO ISS PBLA23 START | 23.1 |
| HIERARCH ESO ISS PBLA23 END | 24.2 |
| HIERARCH ESO ISS PBL24 START | 80.817 |
| HIERARCH ESO ISS PBL24 END | 81.657 |
| HIERARCH ESO ISS PBLA24 START | 64.135 |
| HIERARCH ESO ISS PBLA24 END | 65.206 |
| HIERARCH ESO ISS PBL34 START | 55.169 |
| HIERARCH ESO ISS PBL34 END | 55.875 |
| HIERARCH ESO ISS PBLA34 START | 97.118 |
| HIERARCH ESO ISS PBLA34 END | 97.813 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003718 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003524 |
| HIERARCH ESO ISS AMBI TEMP | 18.26 |
| HIERARCH ESO ISS AMBI FWHM START | 0.77 |
| HIERARCH ESO ISS AMBI FWHM END | 0.86 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |