Exposure
- ID
- GRAVI.2024-12-19T07:20:00.286_2
- Header ID
- GRAVI.2024-12-19T07:20:00.286
- Date updated
- 2024-12-19 07:35:25 UTC+0000
- Release date
- 2025-12-19 07:35:25 UTC+0000
- UTC Start
- 2024-12-19 07:20:00.286
- UTC End
- 2024-12-19 07:26:40.286
- MJD Start
- 60663.30555886
- MJD End
- 60663.310188489624
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.006981
- Ambient temperature (°C)
- 13.66
- Seeing (arcsec)
- 0.7250000000000001
Observation
- ID
- 58536
- 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
- 43000
- Name
- HD_42581
- RA
- 92.64422916666666
- DEC
- -21.86462666666667
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- U1 U2 U3 U4
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 54.7030 | 54.4560 | 36.4000 | 36.7000 |
| U1-U3 | 97.5730 | 96.9670 | 42.2000 | 42.5000 |
| U1-U4 | 114.5870 | 112.9120 | 70.5490 | 70.8990 |
| U2-U3 | 43.5060 | 43.1370 | 49.6000 | 49.8000 |
| U2-U4 | 75.7900 | 74.4360 | 94.4300 | 95.1610 |
| U3-U4 | 54.4310 | 53.7540 | 128.7470 | 129.9790 |
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 | 60663.30555886 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643195 |
| DEC | -21.86935 |
| 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 | 54.703 |
| HIERARCH ESO ISS PBL12 END | 54.456 |
| HIERARCH ESO ISS PBLA12 START | 36.4 |
| HIERARCH ESO ISS PBLA12 END | 36.7 |
| HIERARCH ESO ISS PBL13 START | 97.573 |
| HIERARCH ESO ISS PBL13 END | 96.967 |
| HIERARCH ESO ISS PBLA13 START | 42.2 |
| HIERARCH ESO ISS PBLA13 END | 42.5 |
| HIERARCH ESO ISS PBL14 START | 114.587 |
| HIERARCH ESO ISS PBL14 END | 112.912 |
| HIERARCH ESO ISS PBLA14 START | 70.549 |
| HIERARCH ESO ISS PBLA14 END | 70.899 |
| HIERARCH ESO ISS PBL23 START | 43.506 |
| HIERARCH ESO ISS PBL23 END | 43.137 |
| HIERARCH ESO ISS PBLA23 START | 49.6 |
| HIERARCH ESO ISS PBLA23 END | 49.8 |
| HIERARCH ESO ISS PBL24 START | 75.79 |
| HIERARCH ESO ISS PBL24 END | 74.436 |
| HIERARCH ESO ISS PBLA24 START | 94.43 |
| HIERARCH ESO ISS PBLA24 END | 95.161 |
| HIERARCH ESO ISS PBL34 START | 54.431 |
| HIERARCH ESO ISS PBL34 END | 53.754 |
| HIERARCH ESO ISS PBLA34 START | 128.747 |
| HIERARCH ESO ISS PBLA34 END | 129.979 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.006784 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.007178 |
| HIERARCH ESO ISS AMBI TEMP | 13.66 |
| HIERARCH ESO ISS AMBI FWHM START | 0.68 |
| HIERARCH ESO ISS AMBI FWHM END | 0.77 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |