Exposure
- ID
- GRAVI.2023-12-26T06:34:23.999_1
- Header ID
- GRAVI.2023-12-26T06:34:23.999
- Date updated
- 2023-12-26 06:50:20 UTC+0000
- Release date
- 2024-12-26 06:50:19 UTC+0000
- UTC Start
- 2023-12-26 06:34:23.999
- UTC End
- 2023-12-26 06:41:03.999
- MJD Start
- 60304.27388888
- MJD End
- 60304.2785185096
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.007287
- Ambient temperature (°C)
- 16.91
- 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 | 55.3570 | 55.1600 | 35.4000 | 35.8000 |
| U1-U3 | 99.1960 | 98.7020 | 41.3000 | 41.7000 |
| U1-U4 | 119.1950 | 117.7720 | 69.3970 | 69.7880 |
| U2-U3 | 44.5050 | 44.1990 | 48.7000 | 49.0000 |
| U2-U4 | 79.5730 | 78.3950 | 92.2910 | 92.9780 |
| U3-U4 | 56.4030 | 55.7750 | 125.2370 | 126.3460 |
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 | 60304.27388888 |
| 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 | 55.357 |
| HIERARCH ESO ISS PBL12 END | 55.16 |
| HIERARCH ESO ISS PBLA12 START | 35.4 |
| HIERARCH ESO ISS PBLA12 END | 35.8 |
| HIERARCH ESO ISS PBL13 START | 99.196 |
| HIERARCH ESO ISS PBL13 END | 98.702 |
| HIERARCH ESO ISS PBLA13 START | 41.3 |
| HIERARCH ESO ISS PBLA13 END | 41.7 |
| HIERARCH ESO ISS PBL14 START | 119.195 |
| HIERARCH ESO ISS PBL14 END | 117.772 |
| HIERARCH ESO ISS PBLA14 START | 69.397 |
| HIERARCH ESO ISS PBLA14 END | 69.788 |
| HIERARCH ESO ISS PBL23 START | 44.505 |
| HIERARCH ESO ISS PBL23 END | 44.199 |
| HIERARCH ESO ISS PBLA23 START | 48.7 |
| HIERARCH ESO ISS PBLA23 END | 49.0 |
| HIERARCH ESO ISS PBL24 START | 79.573 |
| HIERARCH ESO ISS PBL24 END | 78.395 |
| HIERARCH ESO ISS PBLA24 START | 92.291 |
| HIERARCH ESO ISS PBLA24 END | 92.978 |
| HIERARCH ESO ISS PBL34 START | 56.403 |
| HIERARCH ESO ISS PBL34 END | 55.775 |
| HIERARCH ESO ISS PBLA34 START | 125.237 |
| HIERARCH ESO ISS PBLA34 END | 126.346 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005445 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.009129 |
| HIERARCH ESO ISS AMBI TEMP | 16.91 |
| HIERARCH ESO ISS AMBI FWHM START | 0.86 |
| HIERARCH ESO ISS AMBI FWHM END | 0.73 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |