Exposure
- ID
- GRAVI.2024-04-29T23:15:12.061_2
- Header ID
- GRAVI.2024-04-29T23:15:12.061
- Date updated
- 2024-04-29 23:30:41 UTC+0000
- Release date
- 2025-04-29 23:30:41 UTC+0000
- UTC Start
- 2024-04-29 23:15:12.061
- UTC End
- 2024-04-29 23:21:52.061
- MJD Start
- 60429.96888959
- MJD End
- 60429.9735192196
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004557
- Ambient temperature (°C)
- 16.56
- Seeing (arcsec)
- 0.785
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
- 92.6442291666667
- DEC
- -21.8646266666667
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 | 53.2660 | 52.9330 | 37.7000 | 37.9000 |
| U1-U3 | 94.0980 | 93.3050 | 43.3000 | 43.4000 |
| U1-U4 | 105.2140 | 103.1380 | 72.1890 | 72.4680 |
| U2-U3 | 41.4110 | 40.9390 | 50.5000 | 50.6000 |
| U2-U4 | 68.3310 | 66.7140 | 98.3830 | 99.2380 |
| U3-U4 | 50.8900 | 50.1820 | 135.5180 | 136.9980 |
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 | 60429.96888959 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643383 |
| DEC | -21.86873 |
| 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 | 53.266 |
| HIERARCH ESO ISS PBL12 END | 52.933 |
| HIERARCH ESO ISS PBLA12 START | 37.7 |
| HIERARCH ESO ISS PBLA12 END | 37.9 |
| HIERARCH ESO ISS PBL13 START | 94.098 |
| HIERARCH ESO ISS PBL13 END | 93.305 |
| HIERARCH ESO ISS PBLA13 START | 43.3 |
| HIERARCH ESO ISS PBLA13 END | 43.4 |
| HIERARCH ESO ISS PBL14 START | 105.214 |
| HIERARCH ESO ISS PBL14 END | 103.138 |
| HIERARCH ESO ISS PBLA14 START | 72.189 |
| HIERARCH ESO ISS PBLA14 END | 72.468 |
| HIERARCH ESO ISS PBL23 START | 41.411 |
| HIERARCH ESO ISS PBL23 END | 40.939 |
| HIERARCH ESO ISS PBLA23 START | 50.5 |
| HIERARCH ESO ISS PBLA23 END | 50.6 |
| HIERARCH ESO ISS PBL24 START | 68.331 |
| HIERARCH ESO ISS PBL24 END | 66.714 |
| HIERARCH ESO ISS PBLA24 START | 98.383 |
| HIERARCH ESO ISS PBLA24 END | 99.238 |
| HIERARCH ESO ISS PBL34 START | 50.89 |
| HIERARCH ESO ISS PBL34 END | 50.182 |
| HIERARCH ESO ISS PBLA34 START | 135.518 |
| HIERARCH ESO ISS PBLA34 END | 136.998 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004557 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004557 |
| HIERARCH ESO ISS AMBI TEMP | 16.56 |
| HIERARCH ESO ISS AMBI FWHM START | 0.84 |
| 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 |