Exposure
- ID
- GRAVI.2025-02-12T03:02:25.953_1
- Header ID
- GRAVI.2025-02-12T03:02:25.953
- Date updated
- 2025-02-12 03:20:35 UTC+0000
- Release date
- 2026-02-12 03:20:35 UTC+0000
- UTC Start
- 2025-02-12 03:02:25.953
- UTC End
- 2025-02-12 03:09:05.953
- MJD Start
- 60718.12668927
- MJD End
- 60718.13131889963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.011734999999999999
- Ambient temperature (°C)
- 12.55
- Seeing (arcsec)
- 0.605
Observation
- ID
- 63963
- 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
- 47631
- Name
- HD_42581_B
- RA
- 92.643423
- DEC
- -21.86949
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 55.8410 | 55.6920 | 34.2000 | 34.6000 |
| U1-U3 | 100.4260 | 100.0430 | 40.3000 | 40.6000 |
| U1-U4 | 122.8640 | 121.7000 | 68.1760 | 68.6040 |
| U2-U3 | 45.2770 | 45.0340 | 47.7000 | 48.1000 |
| U2-U4 | 82.6600 | 81.6720 | 90.3460 | 90.9990 |
| U3-U4 | 58.1100 | 57.5540 | 122.2030 | 123.2010 |
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 | 60718.12668927 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD 42581 B |
| HIERARCH ESO INS SOBJ NAME | HD_42581_B |
| RA | 92.643423 |
| DEC | -21.86949 |
| 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 | 55.841 |
| HIERARCH ESO ISS PBL12 END | 55.692 |
| HIERARCH ESO ISS PBLA12 START | 34.2 |
| HIERARCH ESO ISS PBLA12 END | 34.6 |
| HIERARCH ESO ISS PBL13 START | 100.426 |
| HIERARCH ESO ISS PBL13 END | 100.043 |
| HIERARCH ESO ISS PBLA13 START | 40.3 |
| HIERARCH ESO ISS PBLA13 END | 40.6 |
| HIERARCH ESO ISS PBL14 START | 122.864 |
| HIERARCH ESO ISS PBL14 END | 121.7 |
| HIERARCH ESO ISS PBLA14 START | 68.176 |
| HIERARCH ESO ISS PBLA14 END | 68.604 |
| HIERARCH ESO ISS PBL23 START | 45.277 |
| HIERARCH ESO ISS PBL23 END | 45.034 |
| HIERARCH ESO ISS PBLA23 START | 47.7 |
| HIERARCH ESO ISS PBLA23 END | 48.1 |
| HIERARCH ESO ISS PBL24 START | 82.66 |
| HIERARCH ESO ISS PBL24 END | 81.672 |
| HIERARCH ESO ISS PBLA24 START | 90.346 |
| HIERARCH ESO ISS PBLA24 END | 90.999 |
| HIERARCH ESO ISS PBL34 START | 58.11 |
| HIERARCH ESO ISS PBL34 END | 57.554 |
| HIERARCH ESO ISS PBLA34 START | 122.203 |
| HIERARCH ESO ISS PBLA34 END | 123.201 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.011947 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.011523 |
| HIERARCH ESO ISS AMBI TEMP | 12.55 |
| HIERARCH ESO ISS AMBI FWHM START | 0.64 |
| HIERARCH ESO ISS AMBI FWHM END | 0.57 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |