Exposure
- ID
- GRAVI.2024-06-30T09:48:27.278_2
- Header ID
- GRAVI.2024-06-30T09:48:27.278
- Date updated
- 2024-06-30 09:55:38 UTC+0000
- Release date
- 2025-06-30 09:55:38 UTC+0000
- UTC Start
- 2024-06-30 09:48:27.278
- UTC End
- 2024-06-30 09:50:27.278
- MJD Start
- 60491.40864905
- MJD End
- 60491.4100379389
- Exposure time (s)
- 120.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0029555
- Ambient temperature (°C)
- 11.7
- Seeing (arcsec)
- 0.705
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 | 53.1150 | 53.2200 | 34.4000 | 34.4000 |
| U1-U3 | 98.1250 | 98.3060 | 40.0000 | 40.0000 |
| U1-U4 | 130.2080 | 130.2090 | 63.0650 | 62.9840 |
| U2-U3 | 45.5650 | 45.6340 | 46.5000 | 46.6000 |
| U2-U4 | 87.4250 | 87.2420 | 80.0320 | 79.9300 |
| U3-U4 | 55.4450 | 55.1760 | 106.9890 | 106.9930 |
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 | 60491.40864905 |
| 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 | 53.115 |
| HIERARCH ESO ISS PBL12 END | 53.22 |
| HIERARCH ESO ISS PBLA12 START | 34.4 |
| HIERARCH ESO ISS PBLA12 END | 34.4 |
| HIERARCH ESO ISS PBL13 START | 98.125 |
| HIERARCH ESO ISS PBL13 END | 98.306 |
| HIERARCH ESO ISS PBLA13 START | 40.0 |
| HIERARCH ESO ISS PBLA13 END | 40.0 |
| HIERARCH ESO ISS PBL14 START | 130.208 |
| HIERARCH ESO ISS PBL14 END | 130.209 |
| HIERARCH ESO ISS PBLA14 START | 63.065 |
| HIERARCH ESO ISS PBLA14 END | 62.984 |
| HIERARCH ESO ISS PBL23 START | 45.565 |
| HIERARCH ESO ISS PBL23 END | 45.634 |
| HIERARCH ESO ISS PBLA23 START | 46.5 |
| HIERARCH ESO ISS PBLA23 END | 46.6 |
| HIERARCH ESO ISS PBL24 START | 87.425 |
| HIERARCH ESO ISS PBL24 END | 87.242 |
| HIERARCH ESO ISS PBLA24 START | 80.032 |
| HIERARCH ESO ISS PBLA24 END | 79.93 |
| HIERARCH ESO ISS PBL34 START | 55.445 |
| HIERARCH ESO ISS PBL34 END | 55.176 |
| HIERARCH ESO ISS PBLA34 START | 106.989 |
| HIERARCH ESO ISS PBLA34 END | 106.993 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002861 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00305 |
| HIERARCH ESO ISS AMBI TEMP | 11.7 |
| HIERARCH ESO ISS AMBI FWHM START | 0.72 |
| 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 |