Exposure
- ID
- GRAVI.2025-02-12T02:15:22.833_1
- Header ID
- GRAVI.2025-02-12T02:15:22.833
- Date updated
- 2025-02-12 02:35:28 UTC+0000
- Release date
- 2026-02-12 02:35:28 UTC+0000
- UTC Start
- 2025-02-12 02:15:22.833
- UTC End
- 2025-02-12 02:22:02.833
- MJD Start
- 60718.09401427
- MJD End
- 60718.098643899626
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.010615
- Ambient temperature (°C)
- 12.82
- Seeing (arcsec)
- 0.6499999999999999
Observation
- ID
- 63959
- Category
- science
- Program ID
- 112.26Z1.001
- Program Title
- RESOLVING THE FIRST T DWARF COMPANION AS A TIGHT BROWN DWARF BINARY
- Program Type
- ToO
- PI / COI
- XUAN/ LACOUR/ WANG/ MAWET/ RICKMAN/ BRANDNER/ ZHANG/ MÉRAND/ WINTERHALDER/ SPEZZANO/ JANSON/ HINKLEY/ KRAL/ KAMMERER/ BALMER/ BOURDAROT/ RUFFIO/ OTTEN
Target
- ID
- 47627
- Name
- HD_42581_B
- RA
- 92.643401
- DEC
- -21.86946
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 56.4680 | 56.4160 | 30.8000 | 31.4000 |
| U1-U3 | 102.1150 | 101.9630 | 37.0000 | 37.6000 |
| U1-U4 | 128.4980 | 127.9210 | 64.8830 | 65.4090 |
| U2-U3 | 46.3860 | 46.2810 | 44.6000 | 45.1000 |
| U2-U4 | 87.6320 | 87.0990 | 86.0440 | 86.6670 |
| U3-U4 | 61.1100 | 60.7660 | 116.1860 | 116.9920 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 112.26Z1.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60718.09401427 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643401 |
| DEC | -21.86946 |
| 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 | 56.468 |
| HIERARCH ESO ISS PBL12 END | 56.416 |
| HIERARCH ESO ISS PBLA12 START | 30.8 |
| HIERARCH ESO ISS PBLA12 END | 31.4 |
| HIERARCH ESO ISS PBL13 START | 102.115 |
| HIERARCH ESO ISS PBL13 END | 101.963 |
| HIERARCH ESO ISS PBLA13 START | 37.0 |
| HIERARCH ESO ISS PBLA13 END | 37.6 |
| HIERARCH ESO ISS PBL14 START | 128.498 |
| HIERARCH ESO ISS PBL14 END | 127.921 |
| HIERARCH ESO ISS PBLA14 START | 64.883 |
| HIERARCH ESO ISS PBLA14 END | 65.409 |
| HIERARCH ESO ISS PBL23 START | 46.386 |
| HIERARCH ESO ISS PBL23 END | 46.281 |
| HIERARCH ESO ISS PBLA23 START | 44.6 |
| HIERARCH ESO ISS PBLA23 END | 45.1 |
| HIERARCH ESO ISS PBL24 START | 87.632 |
| HIERARCH ESO ISS PBL24 END | 87.099 |
| HIERARCH ESO ISS PBLA24 START | 86.044 |
| HIERARCH ESO ISS PBLA24 END | 86.667 |
| HIERARCH ESO ISS PBL34 START | 61.11 |
| HIERARCH ESO ISS PBL34 END | 60.766 |
| HIERARCH ESO ISS PBLA34 START | 116.186 |
| HIERARCH ESO ISS PBLA34 END | 116.992 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.010653 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.010577 |
| HIERARCH ESO ISS AMBI TEMP | 12.82 |
| HIERARCH ESO ISS AMBI FWHM START | 0.7 |
| 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 |