Exposure
- ID
- GRAVI.2024-04-29T23:22:24.079_2
- Header ID
- GRAVI.2024-04-29T23:22:24.079
- Date updated
- 2024-04-29 23:35:30 UTC+0000
- Release date
- 2025-04-29 23:35:30 UTC+0000
- UTC Start
- 2024-04-29 23:22:24.079
- UTC End
- 2024-04-29 23:29:04.079
- MJD Start
- 60429.9738898
- MJD End
- 60429.9785194296
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.007567
- Ambient temperature (°C)
- 16.5
- Seeing (arcsec)
- 0.66
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 | 52.9170 | 52.5650 | 37.9000 | 38.0000 |
| U1-U3 | 93.2670 | 92.4330 | 43.4000 | 43.5000 |
| U1-U4 | 103.0380 | 100.8740 | 72.4800 | 72.7440 |
| U2-U3 | 40.9170 | 40.4220 | 50.6000 | 50.7000 |
| U2-U4 | 66.6370 | 64.9660 | 99.2790 | 100.1730 |
| U3-U4 | 50.1480 | 49.4400 | 137.0700 | 138.6150 |
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 | 60429.9738898 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643383 |
| DEC | -21.86873 |
| 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 | 52.917 |
| HIERARCH ESO ISS PBL12 END | 52.565 |
| HIERARCH ESO ISS PBLA12 START | 37.9 |
| HIERARCH ESO ISS PBLA12 END | 38.0 |
| HIERARCH ESO ISS PBL13 START | 93.267 |
| HIERARCH ESO ISS PBL13 END | 92.433 |
| HIERARCH ESO ISS PBLA13 START | 43.4 |
| HIERARCH ESO ISS PBLA13 END | 43.5 |
| HIERARCH ESO ISS PBL14 START | 103.038 |
| HIERARCH ESO ISS PBL14 END | 100.874 |
| HIERARCH ESO ISS PBLA14 START | 72.48 |
| HIERARCH ESO ISS PBLA14 END | 72.744 |
| HIERARCH ESO ISS PBL23 START | 40.917 |
| HIERARCH ESO ISS PBL23 END | 40.422 |
| HIERARCH ESO ISS PBLA23 START | 50.6 |
| HIERARCH ESO ISS PBLA23 END | 50.7 |
| HIERARCH ESO ISS PBL24 START | 66.637 |
| HIERARCH ESO ISS PBL24 END | 64.966 |
| HIERARCH ESO ISS PBLA24 START | 99.279 |
| HIERARCH ESO ISS PBLA24 END | 100.173 |
| HIERARCH ESO ISS PBL34 START | 50.148 |
| HIERARCH ESO ISS PBL34 END | 49.44 |
| HIERARCH ESO ISS PBLA34 START | 137.07 |
| HIERARCH ESO ISS PBLA34 END | 138.615 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004557 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010577 |
| HIERARCH ESO ISS AMBI TEMP | 16.5 |
| HIERARCH ESO ISS AMBI FWHM START | 0.73 |
| HIERARCH ESO ISS AMBI FWHM END | 0.59 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |