Exposure
- ID
- GRAVI.2023-12-26T06:19:08.961_1
- Header ID
- GRAVI.2023-12-26T06:19:08.961
- Date updated
- 2023-12-26 06:35:33 UTC+0000
- Release date
- 2024-12-26 06:35:33 UTC+0000
- UTC Start
- 2023-12-26 06:19:08.961
- UTC End
- 2023-12-26 06:25:48.961
- MJD Start
- 60304.26329816
- MJD End
- 60304.2679277896
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0098745
- Ambient temperature (°C)
- 16.47
- Seeing (arcsec)
- 0.795
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 | 55.7340 | 55.5720 | 34.5000 | 34.9000 |
| U1-U3 | 100.1490 | 99.7370 | 40.5000 | 40.9000 |
| U1-U4 | 122.0200 | 120.7860 | 68.4900 | 68.9110 |
| U2-U3 | 45.1020 | 44.8430 | 48.0000 | 48.3000 |
| U2-U4 | 81.9420 | 80.9020 | 90.8220 | 91.4840 |
| U3-U4 | 57.7040 | 57.1260 | 122.9300 | 123.9580 |
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 | 60304.26329816 |
| 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 | 55.734 |
| HIERARCH ESO ISS PBL12 END | 55.572 |
| HIERARCH ESO ISS PBLA12 START | 34.5 |
| HIERARCH ESO ISS PBLA12 END | 34.9 |
| HIERARCH ESO ISS PBL13 START | 100.149 |
| HIERARCH ESO ISS PBL13 END | 99.737 |
| HIERARCH ESO ISS PBLA13 START | 40.5 |
| HIERARCH ESO ISS PBLA13 END | 40.9 |
| HIERARCH ESO ISS PBL14 START | 122.02 |
| HIERARCH ESO ISS PBL14 END | 120.786 |
| HIERARCH ESO ISS PBLA14 START | 68.49 |
| HIERARCH ESO ISS PBLA14 END | 68.911 |
| HIERARCH ESO ISS PBL23 START | 45.102 |
| HIERARCH ESO ISS PBL23 END | 44.843 |
| HIERARCH ESO ISS PBLA23 START | 48.0 |
| HIERARCH ESO ISS PBLA23 END | 48.3 |
| HIERARCH ESO ISS PBL24 START | 81.942 |
| HIERARCH ESO ISS PBL24 END | 80.902 |
| HIERARCH ESO ISS PBLA24 START | 90.822 |
| HIERARCH ESO ISS PBLA24 END | 91.484 |
| HIERARCH ESO ISS PBL34 START | 57.704 |
| HIERARCH ESO ISS PBL34 END | 57.126 |
| HIERARCH ESO ISS PBLA34 START | 122.93 |
| HIERARCH ESO ISS PBLA34 END | 123.958 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00939 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010359 |
| HIERARCH ESO ISS AMBI TEMP | 16.47 |
| HIERARCH ESO ISS AMBI FWHM START | 0.84 |
| HIERARCH ESO ISS AMBI FWHM END | 0.75 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |