Exposure
- ID
- GRAVI.2024-02-28T02:57:28.592_2
- Header ID
- GRAVI.2024-02-28T02:57:28.592
- Date updated
- 2024-02-28 03:15:28 UTC+0000
- Release date
- 2025-02-28 03:15:28 UTC+0000
- UTC Start
- 2024-02-28 02:57:28.592
- UTC End
- 2024-02-28 03:04:08.592
- MJD Start
- 60368.12324759
- MJD End
- 60368.1278772196
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005802
- Ambient temperature (°C)
- 15.99
- Seeing (arcsec)
- 0.7
Observation
- ID
- 58536
- Category
- science
- Program ID
- 112.26Z1.001
- Program Title
- RESOLVING THE FIRST T DWARF COMPANION AS A TIGHT BROWN DWARF BINARY
- Program Type
- ToO
- PI / COI
- XUAN/ LACOUR/ WANG/ MAWET/ RICKMAN/ BRANDNER/ ZHANG/ MÉRAND/ WINTERHALDER/ SPEZZANO/ JANSON/ HINKLEY/ KRAL/ KAMMERER/ BALMER/ BOURDAROT/ RUFFIO/ OTTEN
Target
- ID
- 43000
- Name
- HD_42581
- RA
- 92.6442291666667
- DEC
- -21.8646266666667
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 | 54.1990 | 53.9170 | 37.0000 | 37.2000 |
| U1-U3 | 96.3420 | 95.6600 | 42.7000 | 42.9000 |
| U1-U4 | 111.2100 | 109.3660 | 71.2260 | 71.5510 |
| U2-U3 | 42.7590 | 42.3470 | 50.0000 | 50.2000 |
| U2-U4 | 73.0700 | 71.6010 | 95.8900 | 96.6650 |
| U3-U4 | 53.0880 | 52.3880 | 131.2180 | 132.5470 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.26Z1.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60368.12324759 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.64375 |
| DEC | -21.86905 |
| 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 | 414.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 54.199 |
| HIERARCH ESO ISS PBL12 END | 53.917 |
| HIERARCH ESO ISS PBLA12 START | 37.0 |
| HIERARCH ESO ISS PBLA12 END | 37.2 |
| HIERARCH ESO ISS PBL13 START | 96.342 |
| HIERARCH ESO ISS PBL13 END | 95.66 |
| HIERARCH ESO ISS PBLA13 START | 42.7 |
| HIERARCH ESO ISS PBLA13 END | 42.9 |
| HIERARCH ESO ISS PBL14 START | 111.21 |
| HIERARCH ESO ISS PBL14 END | 109.366 |
| HIERARCH ESO ISS PBLA14 START | 71.226 |
| HIERARCH ESO ISS PBLA14 END | 71.551 |
| HIERARCH ESO ISS PBL23 START | 42.759 |
| HIERARCH ESO ISS PBL23 END | 42.347 |
| HIERARCH ESO ISS PBLA23 START | 50.0 |
| HIERARCH ESO ISS PBLA23 END | 50.2 |
| HIERARCH ESO ISS PBL24 START | 73.07 |
| HIERARCH ESO ISS PBL24 END | 71.601 |
| HIERARCH ESO ISS PBLA24 START | 95.89 |
| HIERARCH ESO ISS PBLA24 END | 96.665 |
| HIERARCH ESO ISS PBL34 START | 53.088 |
| HIERARCH ESO ISS PBL34 END | 52.388 |
| HIERARCH ESO ISS PBLA34 START | 131.218 |
| HIERARCH ESO ISS PBLA34 END | 132.547 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00577 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005834 |
| HIERARCH ESO ISS AMBI TEMP | 15.99 |
| HIERARCH ESO ISS AMBI FWHM START | 0.66 |
| HIERARCH ESO ISS AMBI FWHM END | 0.74 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |