Exposure
- ID
- GRAVI.2024-12-19T07:01:36.239_2
- Header ID
- GRAVI.2024-12-19T07:01:36.239
- Date updated
- 2024-12-19 07:20:33 UTC+0000
- Release date
- 2025-12-19 07:20:33 UTC+0000
- UTC Start
- 2024-12-19 07:01:36.239
- UTC End
- 2024-12-19 07:08:16.239
- MJD Start
- 60663.29278054
- MJD End
- 60663.29741016963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0070325000000000006
- Ambient temperature (°C)
- 13.77
- Seeing (arcsec)
- 0.715
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 | 55.2810 | 55.0780 | 35.5000 | 35.9000 |
| U1-U3 | 99.0050 | 98.4990 | 41.5000 | 41.8000 |
| U1-U4 | 118.6430 | 117.1920 | 69.5530 | 69.9380 |
| U2-U3 | 44.3860 | 44.0740 | 48.8000 | 49.1000 |
| U2-U4 | 79.1140 | 77.9170 | 92.5610 | 93.2500 |
| U3-U4 | 56.1570 | 55.5250 | 125.6710 | 126.7900 |
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 | 60663.29278054 |
| 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 | -21.86936 |
| 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 | 55.281 |
| HIERARCH ESO ISS PBL12 END | 55.078 |
| HIERARCH ESO ISS PBLA12 START | 35.5 |
| HIERARCH ESO ISS PBLA12 END | 35.9 |
| HIERARCH ESO ISS PBL13 START | 99.005 |
| HIERARCH ESO ISS PBL13 END | 98.499 |
| HIERARCH ESO ISS PBLA13 START | 41.5 |
| HIERARCH ESO ISS PBLA13 END | 41.8 |
| HIERARCH ESO ISS PBL14 START | 118.643 |
| HIERARCH ESO ISS PBL14 END | 117.192 |
| HIERARCH ESO ISS PBLA14 START | 69.553 |
| HIERARCH ESO ISS PBLA14 END | 69.938 |
| HIERARCH ESO ISS PBL23 START | 44.386 |
| HIERARCH ESO ISS PBL23 END | 44.074 |
| HIERARCH ESO ISS PBLA23 START | 48.8 |
| HIERARCH ESO ISS PBLA23 END | 49.1 |
| HIERARCH ESO ISS PBL24 START | 79.114 |
| HIERARCH ESO ISS PBL24 END | 77.917 |
| HIERARCH ESO ISS PBLA24 START | 92.561 |
| HIERARCH ESO ISS PBLA24 END | 93.25 |
| HIERARCH ESO ISS PBL34 START | 56.157 |
| HIERARCH ESO ISS PBL34 END | 55.525 |
| HIERARCH ESO ISS PBLA34 START | 125.671 |
| HIERARCH ESO ISS PBLA34 END | 126.79 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.008123 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005942 |
| HIERARCH ESO ISS AMBI TEMP | 13.77 |
| HIERARCH ESO ISS AMBI FWHM START | 0.73 |
| HIERARCH ESO ISS AMBI FWHM END | 0.7 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |