Exposure
- ID
- GRAVI.2024-03-29T00:56:01.957_2
- Header ID
- GRAVI.2024-03-29T00:56:01.957
- Date updated
- 2024-03-29 01:10:23 UTC+0000
- Release date
- 2025-03-29 01:10:23 UTC+0000
- UTC Start
- 2024-03-29 00:56:01.957
- UTC End
- 2024-03-29 01:02:41.957
- MJD Start
- 60398.03891154
- MJD End
- 60398.0435411696
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.010394
- Ambient temperature (°C)
- 14.23
- Seeing (arcsec)
- 0.49
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 | 54.3350 | 54.0630 | 36.8000 | 37.1000 |
| U1-U3 | 96.6730 | 96.0130 | 42.6000 | 42.8000 |
| U1-U4 | 112.1110 | 110.3180 | 71.0570 | 71.3860 |
| U2-U3 | 42.9590 | 42.5600 | 49.9000 | 50.1000 |
| U2-U4 | 73.7920 | 72.3590 | 95.5070 | 96.2660 |
| U3-U4 | 53.4390 | 52.7470 | 130.5640 | 131.8620 |
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 | 60398.03891154 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643257 |
| DEC | -21.86871 |
| 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 | 54.335 |
| HIERARCH ESO ISS PBL12 END | 54.063 |
| HIERARCH ESO ISS PBLA12 START | 36.8 |
| HIERARCH ESO ISS PBLA12 END | 37.1 |
| HIERARCH ESO ISS PBL13 START | 96.673 |
| HIERARCH ESO ISS PBL13 END | 96.013 |
| HIERARCH ESO ISS PBLA13 START | 42.6 |
| HIERARCH ESO ISS PBLA13 END | 42.8 |
| HIERARCH ESO ISS PBL14 START | 112.111 |
| HIERARCH ESO ISS PBL14 END | 110.318 |
| HIERARCH ESO ISS PBLA14 START | 71.057 |
| HIERARCH ESO ISS PBLA14 END | 71.386 |
| HIERARCH ESO ISS PBL23 START | 42.959 |
| HIERARCH ESO ISS PBL23 END | 42.56 |
| HIERARCH ESO ISS PBLA23 START | 49.9 |
| HIERARCH ESO ISS PBLA23 END | 50.1 |
| HIERARCH ESO ISS PBL24 START | 73.792 |
| HIERARCH ESO ISS PBL24 END | 72.359 |
| HIERARCH ESO ISS PBLA24 START | 95.507 |
| HIERARCH ESO ISS PBLA24 END | 96.266 |
| HIERARCH ESO ISS PBL34 START | 53.439 |
| HIERARCH ESO ISS PBL34 END | 52.747 |
| HIERARCH ESO ISS PBLA34 START | 130.564 |
| HIERARCH ESO ISS PBLA34 END | 131.862 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.010638 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.01015 |
| HIERARCH ESO ISS AMBI TEMP | 14.23 |
| HIERARCH ESO ISS AMBI FWHM START | 0.49 |
| HIERARCH ESO ISS AMBI FWHM END | 0.49 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |