Exposure
- ID
- GRAVI.2023-12-30T06:25:53.113_1
- Header ID
- GRAVI.2023-12-30T06:25:53.113
- Date updated
- 2023-12-30 06:40:51 UTC+0000
- Release date
- 2024-12-30 06:40:51 UTC+0000
- UTC Start
- 2023-12-30 06:25:53.113
- UTC End
- 2023-12-30 06:32:33.113
- MJD Start
- 60308.26797585
- MJD End
- 60308.2726054796
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005772
- Ambient temperature (°C)
- 13.8
- Seeing (arcsec)
- 0.75
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 | 55.1520 | 54.9360 | 35.8000 | 36.1000 |
| U1-U3 | 98.6820 | 98.1470 | 41.7000 | 42.0000 |
| U1-U4 | 117.7150 | 116.1950 | 69.8030 | 70.1830 |
| U2-U3 | 44.1870 | 43.8570 | 49.0000 | 49.3000 |
| U2-U4 | 78.3480 | 77.1000 | 93.0050 | 93.7090 |
| U3-U4 | 55.7510 | 55.1000 | 126.3900 | 127.5470 |
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 | 60308.26797585 |
| 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 | 55.152 |
| HIERARCH ESO ISS PBL12 END | 54.936 |
| HIERARCH ESO ISS PBLA12 START | 35.8 |
| HIERARCH ESO ISS PBLA12 END | 36.1 |
| HIERARCH ESO ISS PBL13 START | 98.682 |
| HIERARCH ESO ISS PBL13 END | 98.147 |
| HIERARCH ESO ISS PBLA13 START | 41.7 |
| HIERARCH ESO ISS PBLA13 END | 42.0 |
| HIERARCH ESO ISS PBL14 START | 117.715 |
| HIERARCH ESO ISS PBL14 END | 116.195 |
| HIERARCH ESO ISS PBLA14 START | 69.803 |
| HIERARCH ESO ISS PBLA14 END | 70.183 |
| HIERARCH ESO ISS PBL23 START | 44.187 |
| HIERARCH ESO ISS PBL23 END | 43.857 |
| HIERARCH ESO ISS PBLA23 START | 49.0 |
| HIERARCH ESO ISS PBLA23 END | 49.3 |
| HIERARCH ESO ISS PBL24 START | 78.348 |
| HIERARCH ESO ISS PBL24 END | 77.1 |
| HIERARCH ESO ISS PBLA24 START | 93.005 |
| HIERARCH ESO ISS PBLA24 END | 93.709 |
| HIERARCH ESO ISS PBL34 START | 55.751 |
| HIERARCH ESO ISS PBL34 END | 55.1 |
| HIERARCH ESO ISS PBLA34 START | 126.39 |
| HIERARCH ESO ISS PBLA34 END | 127.547 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.006071 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005473 |
| HIERARCH ESO ISS AMBI TEMP | 13.8 |
| HIERARCH ESO ISS AMBI FWHM START | 0.82 |
| HIERARCH ESO ISS AMBI FWHM END | 0.68 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |