Exposure
- ID
- GRAVI.2024-06-30T09:59:30.306_2
- Header ID
- GRAVI.2024-06-30T09:59:30.306
- Date updated
- 2024-06-30 10:10:33 UTC+0000
- Release date
- 2025-06-30 10:10:33 UTC+0000
- UTC Start
- 2024-06-30 09:59:30.306
- UTC End
- 2024-06-30 10:01:30.306
- MJD Start
- 60491.41632299
- MJD End
- 60491.4177118789
- Exposure time (s)
- 120.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0032055
- Ambient temperature (°C)
- 11.73
- Seeing (arcsec)
- 0.685
Observation
- ID
- 59804
- 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
- 44363
- Name
- star
- RA
- 338.127325
- DEC
- 8.21004111111111
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 | 53.6230 | 53.7220 | 34.7000 | 34.8000 |
| U1-U3 | 98.9850 | 99.1480 | 40.2000 | 40.2000 |
| U1-U4 | 130.1160 | 130.0690 | 62.6430 | 62.5510 |
| U2-U3 | 45.8840 | 45.9410 | 46.5000 | 46.5000 |
| U2-U4 | 86.4410 | 86.2200 | 79.5140 | 79.4050 |
| U3-U4 | 54.0690 | 53.7770 | 107.0280 | 107.0420 |
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 | 60491.41632299 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | AKN 557 |
| HIERARCH ESO INS SOBJ NAME | AKN_557 |
| RA | 338.127802 |
| 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 | 53.623 |
| HIERARCH ESO ISS PBL12 END | 53.722 |
| HIERARCH ESO ISS PBLA12 START | 34.7 |
| HIERARCH ESO ISS PBLA12 END | 34.8 |
| HIERARCH ESO ISS PBL13 START | 98.985 |
| HIERARCH ESO ISS PBL13 END | 99.148 |
| HIERARCH ESO ISS PBLA13 START | 40.2 |
| HIERARCH ESO ISS PBLA13 END | 40.2 |
| HIERARCH ESO ISS PBL14 START | 130.116 |
| HIERARCH ESO ISS PBL14 END | 130.069 |
| HIERARCH ESO ISS PBLA14 START | 62.643 |
| HIERARCH ESO ISS PBLA14 END | 62.551 |
| HIERARCH ESO ISS PBL23 START | 45.884 |
| HIERARCH ESO ISS PBL23 END | 45.941 |
| HIERARCH ESO ISS PBLA23 START | 46.5 |
| HIERARCH ESO ISS PBLA23 END | 46.5 |
| HIERARCH ESO ISS PBL24 START | 86.441 |
| HIERARCH ESO ISS PBL24 END | 86.22 |
| HIERARCH ESO ISS PBLA24 START | 79.514 |
| HIERARCH ESO ISS PBLA24 END | 79.405 |
| HIERARCH ESO ISS PBL34 START | 54.069 |
| HIERARCH ESO ISS PBL34 END | 53.777 |
| HIERARCH ESO ISS PBLA34 START | 107.028 |
| HIERARCH ESO ISS PBLA34 END | 107.042 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003206 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003205 |
| HIERARCH ESO ISS AMBI TEMP | 11.73 |
| HIERARCH ESO ISS AMBI FWHM START | 0.68 |
| HIERARCH ESO ISS AMBI FWHM END | 0.69 |
| HIERARCH ESO FT ROBJ NAME | star |
| HIERARCH ESO FT ROBJ ALPHA | 223230.558 |
| HIERARCH ESO FT ROBJ DELTA | 081236.148 |