Exposure
- ID
- GRAVI.2023-07-31T01:03:01.509_2
- Header ID
- GRAVI.2023-07-31T01:03:01.509
- Date updated
- 2025-03-26 15:25:23 UTC+0000
- Release date
- 2024-07-31 01:10:42 UTC+0000
- UTC Start
- 2023-07-31 01:03:01.509
- UTC End
- 2023-07-31 01:03:13.509
- MJD Start
- 60156.04376746
- MJD End
- 60156.043906348896
- Exposure time (s)
- 12.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.006383
- Ambient temperature (°C)
- 17.95
- Seeing (arcsec)
- 0.67
Observation
- ID
- 56476
- 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
- 41852
- Name
- P1449_A
- RA
- 268.29540416666663
- DEC
- -28.094885833333333
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 | 56.5270 | 56.5280 | 19.1000 | 19.2000 |
| U1-U3 | 102.2510 | 102.2550 | 25.3000 | 25.4000 |
| U1-U4 | 128.5050 | 128.5330 | 52.9180 | 52.9790 |
| U2-U3 | 46.4510 | 46.4550 | 32.8000 | 32.9000 |
| U2-U4 | 87.3710 | 87.4020 | 74.0020 | 74.0590 |
| U3-U4 | 60.6770 | 60.7010 | 104.2680 | 104.3130 |
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 | 60156.04376746 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | P1449 |
| HIERARCH ESO INS SOBJ NAME | P1449_B |
| RA | 268.294278 |
| DEC | -28.09549 |
| 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 | 31.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 0.3 |
| HIERARCH ESO DET2 NDIT | 40 |
| HIERARCH ESO ISS PBL12 START | 56.527 |
| HIERARCH ESO ISS PBL12 END | 56.528 |
| HIERARCH ESO ISS PBLA12 START | 19.1 |
| HIERARCH ESO ISS PBLA12 END | 19.2 |
| HIERARCH ESO ISS PBL13 START | 102.251 |
| HIERARCH ESO ISS PBL13 END | 102.255 |
| HIERARCH ESO ISS PBLA13 START | 25.3 |
| HIERARCH ESO ISS PBLA13 END | 25.4 |
| HIERARCH ESO ISS PBL14 START | 128.505 |
| HIERARCH ESO ISS PBL14 END | 128.533 |
| HIERARCH ESO ISS PBLA14 START | 52.918 |
| HIERARCH ESO ISS PBLA14 END | 52.979 |
| HIERARCH ESO ISS PBL23 START | 46.451 |
| HIERARCH ESO ISS PBL23 END | 46.455 |
| HIERARCH ESO ISS PBLA23 START | 32.8 |
| HIERARCH ESO ISS PBLA23 END | 32.9 |
| HIERARCH ESO ISS PBL24 START | 87.371 |
| HIERARCH ESO ISS PBL24 END | 87.402 |
| HIERARCH ESO ISS PBLA24 START | 74.002 |
| HIERARCH ESO ISS PBLA24 END | 74.059 |
| HIERARCH ESO ISS PBL34 START | 60.677 |
| HIERARCH ESO ISS PBL34 END | 60.701 |
| HIERARCH ESO ISS PBLA34 START | 104.268 |
| HIERARCH ESO ISS PBLA34 END | 104.313 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.006383 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.006383 |
| HIERARCH ESO ISS AMBI TEMP | 17.95 |
| HIERARCH ESO ISS AMBI FWHM START | 0.67 |
| HIERARCH ESO ISS AMBI FWHM END | 0.67 |
| HIERARCH ESO FT ROBJ NAME | P1449_A |
| HIERARCH ESO FT ROBJ ALPHA | 175310.897 |
| HIERARCH ESO FT ROBJ DELTA | -280541.589 |