Exposure
- ID
- GRAVI.2023-07-29T02:24:01.067_2
- Header ID
- GRAVI.2023-07-29T02:24:01.067
- Date updated
- 2025-03-26 15:25:23 UTC+0000
- Release date
- 2024-07-29 02:35:49 UTC+0000
- UTC Start
- 2023-07-29 02:24:01.067
- UTC End
- 2023-07-29 02:26:01.067
- MJD Start
- 60154.10001235
- MJD End
- 60154.101401238884
- Exposure time (s)
- 120.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0075309999999999995
- Ambient temperature (°C)
- 16.16
- Seeing (arcsec)
- 0.715
Observation
- ID
- 56445
- 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
- 41830
- Name
- P1954_A
- RA
- 277.67686249999997
- DEC
- -29.606622222222224
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 | 56.5150 | 56.5070 | 23.4000 | 23.7000 |
| U1-U3 | 102.3990 | 102.3860 | 29.7000 | 30.0000 |
| U1-U4 | 130.1310 | 130.1600 | 57.5600 | 57.8490 |
| U2-U3 | 46.6390 | 46.6360 | 37.4000 | 37.6000 |
| U2-U4 | 89.1710 | 89.2250 | 78.3850 | 78.6730 |
| U3-U4 | 62.0510 | 62.1080 | 107.9380 | 108.2010 |
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 | 60154.10001235 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | P1954 |
| HIERARCH ESO INS SOBJ NAME | P1954_B |
| RA | 277.676701 |
| DEC | -29.60772 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| 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 | 139.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 3.0 |
| HIERARCH ESO DET2 NDIT | 40 |
| HIERARCH ESO ISS PBL12 START | 56.515 |
| HIERARCH ESO ISS PBL12 END | 56.507 |
| HIERARCH ESO ISS PBLA12 START | 23.4 |
| HIERARCH ESO ISS PBLA12 END | 23.7 |
| HIERARCH ESO ISS PBL13 START | 102.399 |
| HIERARCH ESO ISS PBL13 END | 102.386 |
| HIERARCH ESO ISS PBLA13 START | 29.7 |
| HIERARCH ESO ISS PBLA13 END | 30.0 |
| HIERARCH ESO ISS PBL14 START | 130.131 |
| HIERARCH ESO ISS PBL14 END | 130.16 |
| HIERARCH ESO ISS PBLA14 START | 57.56 |
| HIERARCH ESO ISS PBLA14 END | 57.849 |
| HIERARCH ESO ISS PBL23 START | 46.639 |
| HIERARCH ESO ISS PBL23 END | 46.636 |
| HIERARCH ESO ISS PBLA23 START | 37.4 |
| HIERARCH ESO ISS PBLA23 END | 37.6 |
| HIERARCH ESO ISS PBL24 START | 89.171 |
| HIERARCH ESO ISS PBL24 END | 89.225 |
| HIERARCH ESO ISS PBLA24 START | 78.385 |
| HIERARCH ESO ISS PBLA24 END | 78.673 |
| HIERARCH ESO ISS PBL34 START | 62.051 |
| HIERARCH ESO ISS PBL34 END | 62.108 |
| HIERARCH ESO ISS PBLA34 START | 107.938 |
| HIERARCH ESO ISS PBLA34 END | 108.201 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.007285 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.007777 |
| HIERARCH ESO ISS AMBI TEMP | 16.16 |
| HIERARCH ESO ISS AMBI FWHM START | 0.73 |
| HIERARCH ESO ISS AMBI FWHM END | 0.7 |
| HIERARCH ESO FT ROBJ NAME | P1954_A |
| HIERARCH ESO FT ROBJ ALPHA | 183042.447 |
| HIERARCH ESO FT ROBJ DELTA | -293623.840 |