Exposure
- ID
- GRAVI.2024-02-28T03:13:28.632_2
- Header ID
- GRAVI.2024-02-28T03:13:28.632
- Date updated
- 2024-02-28 03:30:22 UTC+0000
- Release date
- 2025-02-28 03:30:22 UTC+0000
- UTC Start
- 2024-02-28 03:13:28.632
- UTC End
- 2024-02-28 03:20:08.632
- MJD Start
- 60368.13435917
- MJD End
- 60368.1389887996
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005697
- Ambient temperature (°C)
- 16.07
- Seeing (arcsec)
- 0.73
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 | 53.5230 | 53.2030 | 37.5000 | 37.7000 |
| U1-U3 | 94.7130 | 93.9470 | 43.2000 | 43.3000 |
| U1-U4 | 106.8390 | 104.8180 | 71.9530 | 72.2450 |
| U2-U3 | 41.7790 | 41.3210 | 50.4000 | 50.5000 |
| U2-U4 | 69.6050 | 68.0210 | 97.7140 | 98.5460 |
| U3-U4 | 51.4630 | 50.7530 | 134.3580 | 135.8000 |
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 | 60368.13435917 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.64375 |
| DEC | -21.86905 |
| 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 | 53.523 |
| HIERARCH ESO ISS PBL12 END | 53.203 |
| HIERARCH ESO ISS PBLA12 START | 37.5 |
| HIERARCH ESO ISS PBLA12 END | 37.7 |
| HIERARCH ESO ISS PBL13 START | 94.713 |
| HIERARCH ESO ISS PBL13 END | 93.947 |
| HIERARCH ESO ISS PBLA13 START | 43.2 |
| HIERARCH ESO ISS PBLA13 END | 43.3 |
| HIERARCH ESO ISS PBL14 START | 106.839 |
| HIERARCH ESO ISS PBL14 END | 104.818 |
| HIERARCH ESO ISS PBLA14 START | 71.953 |
| HIERARCH ESO ISS PBLA14 END | 72.245 |
| HIERARCH ESO ISS PBL23 START | 41.779 |
| HIERARCH ESO ISS PBL23 END | 41.321 |
| HIERARCH ESO ISS PBLA23 START | 50.4 |
| HIERARCH ESO ISS PBLA23 END | 50.5 |
| HIERARCH ESO ISS PBL24 START | 69.605 |
| HIERARCH ESO ISS PBL24 END | 68.021 |
| HIERARCH ESO ISS PBLA24 START | 97.714 |
| HIERARCH ESO ISS PBLA24 END | 98.546 |
| HIERARCH ESO ISS PBL34 START | 51.463 |
| HIERARCH ESO ISS PBL34 END | 50.753 |
| HIERARCH ESO ISS PBLA34 START | 134.358 |
| HIERARCH ESO ISS PBLA34 END | 135.8 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.006054 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.00534 |
| HIERARCH ESO ISS AMBI TEMP | 16.07 |
| HIERARCH ESO ISS AMBI FWHM START | 0.61 |
| HIERARCH ESO ISS AMBI FWHM END | 0.85 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |