Exposure
- ID
- GRAVI.2023-12-30T06:11:23.077_1
- Header ID
- GRAVI.2023-12-30T06:11:23.077
- Date updated
- 2023-12-30 06:25:50 UTC+0000
- Release date
- 2024-12-30 06:25:50 UTC+0000
- UTC Start
- 2023-12-30 06:11:23.077
- UTC End
- 2023-12-30 06:18:03.077
- MJD Start
- 60308.25790598
- MJD End
- 60308.2625356096
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0084065
- Ambient temperature (°C)
- 13.75
- Seeing (arcsec)
- 0.495
Observation
- ID
- 58103
- 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
- 43025
- Name
- HD_42581_B
- RA
- 92.643501
- DEC
- -21.86884
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 55.5470 | 55.3670 | 35.0000 | 35.4000 |
| U1-U3 | 99.6750 | 99.2210 | 41.0000 | 41.3000 |
| U1-U4 | 120.6010 | 119.2680 | 68.9700 | 69.3760 |
| U2-U3 | 44.8030 | 44.5200 | 48.4000 | 48.7000 |
| U2-U4 | 80.7470 | 79.6340 | 91.5810 | 92.2550 |
| U3-U4 | 57.0410 | 56.4360 | 124.1100 | 125.1790 |
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 | 60308.25790598 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643501 |
| DEC | -21.86884 |
| 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 | 55.547 |
| HIERARCH ESO ISS PBL12 END | 55.367 |
| HIERARCH ESO ISS PBLA12 START | 35.0 |
| HIERARCH ESO ISS PBLA12 END | 35.4 |
| HIERARCH ESO ISS PBL13 START | 99.675 |
| HIERARCH ESO ISS PBL13 END | 99.221 |
| HIERARCH ESO ISS PBLA13 START | 41.0 |
| HIERARCH ESO ISS PBLA13 END | 41.3 |
| HIERARCH ESO ISS PBL14 START | 120.601 |
| HIERARCH ESO ISS PBL14 END | 119.268 |
| HIERARCH ESO ISS PBLA14 START | 68.97 |
| HIERARCH ESO ISS PBLA14 END | 69.376 |
| HIERARCH ESO ISS PBL23 START | 44.803 |
| HIERARCH ESO ISS PBL23 END | 44.52 |
| HIERARCH ESO ISS PBLA23 START | 48.4 |
| HIERARCH ESO ISS PBLA23 END | 48.7 |
| HIERARCH ESO ISS PBL24 START | 80.747 |
| HIERARCH ESO ISS PBL24 END | 79.634 |
| HIERARCH ESO ISS PBLA24 START | 91.581 |
| HIERARCH ESO ISS PBLA24 END | 92.255 |
| HIERARCH ESO ISS PBL34 START | 57.041 |
| HIERARCH ESO ISS PBL34 END | 56.436 |
| HIERARCH ESO ISS PBLA34 START | 124.11 |
| HIERARCH ESO ISS PBLA34 END | 125.179 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.010012 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.006801 |
| HIERARCH ESO ISS AMBI TEMP | 13.75 |
| HIERARCH ESO ISS AMBI FWHM START | 0.39 |
| HIERARCH ESO ISS AMBI FWHM END | 0.6 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |