Exposure
- ID
- GRAVI.2023-12-26T05:00:59.763_1
- Header ID
- GRAVI.2023-12-26T05:00:59.763
- Date updated
- 2023-12-26 05:15:38 UTC+0000
- Release date
- 2024-12-26 05:15:38 UTC+0000
- UTC Start
- 2023-12-26 05:00:59.763
- UTC End
- 2023-12-26 05:07:39.763
- MJD Start
- 60304.20902503
- MJD End
- 60304.2136546596
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.009758
- Ambient temperature (°C)
- 17.22
- Seeing (arcsec)
- 0.89
Observation
- ID
- 58062
- Category
- science
- Program ID
- 112.25RU.001
- Program Title
- IS THE FIRST T DWARF COMPANION A BROWN DWARF BINARY?
- Program Type
- Normal
- PI / COI
- XUAN/ WANG/ LACOUR/ RUFFIO/ ZHANG/ BRANDNER/ MAWET/ RICKMAN
Target
- ID
- 42999
- Name
- HD_42581_B
- RA
- 92.643198
- DEC
- -21.86886
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 56.5590 | 56.5500 | 28.5000 | 29.2000 |
| U1-U3 | 102.4200 | 102.3780 | 34.8000 | 35.5000 |
| U1-U4 | 129.9150 | 129.6530 | 62.7510 | 63.3450 |
| U2-U3 | 46.6180 | 46.5810 | 42.5000 | 43.1000 |
| U2-U4 | 89.0230 | 88.7480 | 83.6850 | 84.3180 |
| U3-U4 | 62.0730 | 61.8700 | 113.3330 | 114.0670 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.25RU.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60304.20902503 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643198 |
| DEC | -21.86886 |
| 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 | 56.559 |
| HIERARCH ESO ISS PBL12 END | 56.55 |
| HIERARCH ESO ISS PBLA12 START | 28.5 |
| HIERARCH ESO ISS PBLA12 END | 29.2 |
| HIERARCH ESO ISS PBL13 START | 102.42 |
| HIERARCH ESO ISS PBL13 END | 102.378 |
| HIERARCH ESO ISS PBLA13 START | 34.8 |
| HIERARCH ESO ISS PBLA13 END | 35.5 |
| HIERARCH ESO ISS PBL14 START | 129.915 |
| HIERARCH ESO ISS PBL14 END | 129.653 |
| HIERARCH ESO ISS PBLA14 START | 62.751 |
| HIERARCH ESO ISS PBLA14 END | 63.345 |
| HIERARCH ESO ISS PBL23 START | 46.618 |
| HIERARCH ESO ISS PBL23 END | 46.581 |
| HIERARCH ESO ISS PBLA23 START | 42.5 |
| HIERARCH ESO ISS PBLA23 END | 43.1 |
| HIERARCH ESO ISS PBL24 START | 89.023 |
| HIERARCH ESO ISS PBL24 END | 88.748 |
| HIERARCH ESO ISS PBLA24 START | 83.685 |
| HIERARCH ESO ISS PBLA24 END | 84.318 |
| HIERARCH ESO ISS PBL34 START | 62.073 |
| HIERARCH ESO ISS PBL34 END | 61.87 |
| HIERARCH ESO ISS PBLA34 START | 113.333 |
| HIERARCH ESO ISS PBLA34 END | 114.067 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008634 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010882 |
| HIERARCH ESO ISS AMBI TEMP | 17.22 |
| HIERARCH ESO ISS AMBI FWHM START | 1.08 |
| HIERARCH ESO ISS AMBI FWHM END | 0.7 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |