Exposure
- ID
- GRAVI.2023-09-27T23:55:52.598_2
- Header ID
- GRAVI.2023-09-27T23:55:52.598
- Date updated
- 2025-03-26 15:25:23 UTC+0000
- Release date
- 2024-09-28 00:05:25 UTC+0000
- UTC Start
- 2023-09-27 23:55:52.598
- UTC End
- 2023-09-27 23:57:52.598
- MJD Start
- 60214.99713655
- MJD End
- 60214.99852543889
- Exposure time (s)
- 120.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.003936
- Ambient temperature (°C)
- 13.96
- Seeing (arcsec)
- 0.625
Observation
- ID
- 57118
- Category
- science
- Program ID
- 108.220D.004
- Program Title
- TOWARDS DETECTION OF SINGLE BLACK HOLES BY MICROLENSING AND INTERFEROMETRY
- Program Type
- Monitoring
- PI / COI
- MÉRAND / DONG / GOULD / WOILLEZ / UDALSKI / MROZ
Target
- ID
- 42342
- Name
- KB231224
- RA
- 267.37613333333326
- DEC
- -25.605311944444445
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 | 54.9800 | 54.9040 | 35.3000 | 35.5000 |
| U1-U3 | 98.5870 | 98.4040 | 41.5000 | 41.6000 |
| U1-U4 | 119.9490 | 119.4750 | 70.2500 | 70.4380 |
| U2-U3 | 44.3180 | 44.2090 | 49.1000 | 49.2000 |
| U2-U4 | 81.2380 | 80.8670 | 93.0590 | 93.3430 |
| U3-U4 | 58.1410 | 57.9550 | 125.0010 | 125.4000 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 108.220D.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60214.99713655 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | KB231224 |
| HIERARCH ESO INS SOBJ NAME | empty |
| RA | 267.378328 |
| DEC | -25.6054 |
| HIERARCH ESO INS SPEC RES | LOW |
| HIERARCH ESO INS POLA MODE | COMBINED |
| 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 | 150.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 1.0 |
| HIERARCH ESO DET2 NDIT | 120 |
| HIERARCH ESO ISS PBL12 START | 54.98 |
| HIERARCH ESO ISS PBL12 END | 54.904 |
| HIERARCH ESO ISS PBLA12 START | 35.3 |
| HIERARCH ESO ISS PBLA12 END | 35.5 |
| HIERARCH ESO ISS PBL13 START | 98.587 |
| HIERARCH ESO ISS PBL13 END | 98.404 |
| HIERARCH ESO ISS PBLA13 START | 41.5 |
| HIERARCH ESO ISS PBLA13 END | 41.6 |
| HIERARCH ESO ISS PBL14 START | 119.949 |
| HIERARCH ESO ISS PBL14 END | 119.475 |
| HIERARCH ESO ISS PBLA14 START | 70.25 |
| HIERARCH ESO ISS PBLA14 END | 70.438 |
| HIERARCH ESO ISS PBL23 START | 44.318 |
| HIERARCH ESO ISS PBL23 END | 44.209 |
| HIERARCH ESO ISS PBLA23 START | 49.1 |
| HIERARCH ESO ISS PBLA23 END | 49.2 |
| HIERARCH ESO ISS PBL24 START | 81.238 |
| HIERARCH ESO ISS PBL24 END | 80.867 |
| HIERARCH ESO ISS PBLA24 START | 93.059 |
| HIERARCH ESO ISS PBLA24 END | 93.343 |
| HIERARCH ESO ISS PBL34 START | 58.141 |
| HIERARCH ESO ISS PBL34 END | 57.955 |
| HIERARCH ESO ISS PBLA34 START | 125.001 |
| HIERARCH ESO ISS PBLA34 END | 125.4 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003876 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003996 |
| HIERARCH ESO ISS AMBI TEMP | 13.96 |
| HIERARCH ESO ISS AMBI FWHM START | 0.6 |
| HIERARCH ESO ISS AMBI FWHM END | 0.65 |
| HIERARCH ESO FT ROBJ NAME | KB231224 |
| HIERARCH ESO FT ROBJ ALPHA | 174930.272 |
| HIERARCH ESO FT ROBJ DELTA | -253619.123 |