Exposure
- ID
- GRAVI.2024-07-25T08:39:08.834_1
- Header ID
- GRAVI.2024-07-25T08:39:08.834
- Date updated
- 2024-07-25 08:50:31 UTC+0000
- Release date
- 2025-07-25 08:50:31 UTC+0000
- UTC Start
- 2024-07-25 08:39:08.834
- UTC End
- 2024-07-25 08:41:08.834
- MJD Start
- 60516.36051891
- MJD End
- 60516.3619077989
- Exposure time (s)
- 120.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003265
- Ambient temperature (°C)
- 12.2
- Seeing (arcsec)
- 0.565
Observation
- ID
- 60188
- Category
- science
- Program ID
- 113.26T9.002
- Program Title
- FIRST SYSTEMATIC SEARCH FOR PARSEC-SCALE SUPERMASSIVE BLACK HOLE BINARIES WITH VLTI/GRAVITY
- Program Type
- Normal
- PI / COI
- SHANGGUAN / SHIMIZU / GENZEL / DAVIES / STURM / LUTZ / EISENHAUER / TACCONI / FORSTER SCHREIBER / DEXTER / SANTOS / CAO / HOENIG / PERRIN / PETROV / PAUMARD / CLÉNET / DE ZEEUW / LEFTLEY / SYKES / LI
Target
- ID
- 44690
- Name
- AKN_557
- RA
- 338.127944
- DEC
- 8.20851
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 54.3700 | 54.4560 | 35.2000 | 35.3000 |
| U1-U3 | 100.1820 | 100.3130 | 40.3000 | 40.3000 |
| U1-U4 | 129.4710 | 129.3490 | 61.8420 | 61.7310 |
| U2-U3 | 46.2810 | 46.3210 | 46.3000 | 46.3000 |
| U2-U4 | 84.4470 | 84.1640 | 78.6030 | 78.4840 |
| U3-U4 | 51.6020 | 51.2740 | 107.1990 | 107.2310 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 113.26T9.002 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60516.36051891 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AKN 557 |
| HIERARCH ESO INS SOBJ NAME | AKN_557 |
| RA | 338.127944 |
| DEC | 8.20851 |
| 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 | 137.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 10.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 54.37 |
| HIERARCH ESO ISS PBL12 END | 54.456 |
| HIERARCH ESO ISS PBLA12 START | 35.2 |
| HIERARCH ESO ISS PBLA12 END | 35.3 |
| HIERARCH ESO ISS PBL13 START | 100.182 |
| HIERARCH ESO ISS PBL13 END | 100.313 |
| HIERARCH ESO ISS PBLA13 START | 40.3 |
| HIERARCH ESO ISS PBLA13 END | 40.3 |
| HIERARCH ESO ISS PBL14 START | 129.471 |
| HIERARCH ESO ISS PBL14 END | 129.349 |
| HIERARCH ESO ISS PBLA14 START | 61.842 |
| HIERARCH ESO ISS PBLA14 END | 61.731 |
| HIERARCH ESO ISS PBL23 START | 46.281 |
| HIERARCH ESO ISS PBL23 END | 46.321 |
| HIERARCH ESO ISS PBLA23 START | 46.3 |
| HIERARCH ESO ISS PBLA23 END | 46.3 |
| HIERARCH ESO ISS PBL24 START | 84.447 |
| HIERARCH ESO ISS PBL24 END | 84.164 |
| HIERARCH ESO ISS PBLA24 START | 78.603 |
| HIERARCH ESO ISS PBLA24 END | 78.484 |
| HIERARCH ESO ISS PBL34 START | 51.602 |
| HIERARCH ESO ISS PBL34 END | 51.274 |
| HIERARCH ESO ISS PBLA34 START | 107.199 |
| HIERARCH ESO ISS PBLA34 END | 107.231 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003469 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003061 |
| HIERARCH ESO ISS AMBI TEMP | 12.2 |
| HIERARCH ESO ISS AMBI FWHM START | 0.56 |
| HIERARCH ESO ISS AMBI FWHM END | 0.57 |
| HIERARCH ESO FT ROBJ NAME | star |
| HIERARCH ESO FT ROBJ ALPHA | 223230.558 |
| HIERARCH ESO FT ROBJ DELTA | 081236.148 |