Exposure
- ID
- GRAVI.2024-03-29T00:31:13.894_1
- Header ID
- GRAVI.2024-03-29T00:31:13.894
- Date updated
- 2024-03-29 00:50:24 UTC+0000
- Release date
- 2025-03-29 00:50:24 UTC+0000
- UTC Start
- 2024-03-29 00:31:13.894
- UTC End
- 2024-03-29 00:37:53.894
- MJD Start
- 60398.02168859
- MJD End
- 60398.0263182196
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0089655
- Ambient temperature (°C)
- 14.29
- Seeing (arcsec)
- 0.51
Observation
- ID
- 58867
- 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
- 43584
- Name
- HD_42581_B
- RA
- 92.643257
- DEC
- -21.86871
Instrument
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| U1-U2 | 55.1740 | 54.9620 | 35.7000 | 36.1000 |
| U1-U3 | 98.7370 | 98.2100 | 41.6000 | 41.9000 |
| U1-U4 | 117.8730 | 116.3750 | 69.7620 | 70.1400 |
| U2-U3 | 44.2200 | 43.8960 | 49.0000 | 49.3000 |
| U2-U4 | 78.4790 | 77.2480 | 92.9310 | 93.6280 |
| U3-U4 | 55.8210 | 55.1780 | 126.2680 | 127.4110 |
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 | 60398.02168859 |
| 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 | 55.174 |
| HIERARCH ESO ISS PBL12 END | 54.962 |
| HIERARCH ESO ISS PBLA12 START | 35.7 |
| HIERARCH ESO ISS PBLA12 END | 36.1 |
| HIERARCH ESO ISS PBL13 START | 98.737 |
| HIERARCH ESO ISS PBL13 END | 98.21 |
| HIERARCH ESO ISS PBLA13 START | 41.6 |
| HIERARCH ESO ISS PBLA13 END | 41.9 |
| HIERARCH ESO ISS PBL14 START | 117.873 |
| HIERARCH ESO ISS PBL14 END | 116.375 |
| HIERARCH ESO ISS PBLA14 START | 69.762 |
| HIERARCH ESO ISS PBLA14 END | 70.14 |
| HIERARCH ESO ISS PBL23 START | 44.22 |
| HIERARCH ESO ISS PBL23 END | 43.896 |
| HIERARCH ESO ISS PBLA23 START | 49.0 |
| HIERARCH ESO ISS PBLA23 END | 49.3 |
| HIERARCH ESO ISS PBL24 START | 78.479 |
| HIERARCH ESO ISS PBL24 END | 77.248 |
| HIERARCH ESO ISS PBLA24 START | 92.931 |
| HIERARCH ESO ISS PBLA24 END | 93.628 |
| HIERARCH ESO ISS PBL34 START | 55.821 |
| HIERARCH ESO ISS PBL34 END | 55.178 |
| HIERARCH ESO ISS PBLA34 START | 126.268 |
| HIERARCH ESO ISS PBLA34 END | 127.411 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00864 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.009291 |
| HIERARCH ESO ISS AMBI TEMP | 14.29 |
| HIERARCH ESO ISS AMBI FWHM START | 0.48 |
| HIERARCH ESO ISS AMBI FWHM END | 0.54 |
| HIERARCH ESO FT ROBJ NAME | HD_42581 |
| HIERARCH ESO FT ROBJ ALPHA | 061034.615 |
| HIERARCH ESO FT ROBJ DELTA | -215152.656 |