Exposure
- ID
- GRAVI.2025-11-12T07:18:12.973_2
- Header ID
- GRAVI.2025-11-12T07:18:12.973
- Date updated
- 2025-11-12 07:35:52 UTC+0000
- Release date
- 2026-11-12 07:35:52 UTC+0000
- UTC Start
- 2025-11-12 07:18:12.973
- UTC End
- 2025-11-12 07:24:52.973
- MJD Start
- 60991.30431682
- MJD End
- 60991.30894644963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0050775
- Ambient temperature (°C)
- 12.75
- Seeing (arcsec)
- 0.6
Observation
- ID
- 71560
- Category
- science
- Program ID
- 116.28QW.001
- Program Title
- CONFIRMATION OF A SATELLITE AND CIRCUM-SUBSTELLAR DISK AROUND DH TAU B WITH GRAVITY-WIDE
- Program Type
- Normal
- PI / COI
- LAZZONI / KAMMERER / PALADINI / KORHONEN / HINKLEY / DESIDERA / GRATTON / KENWORTHY / CHAUVIN / KERVELLA / FAHERTY / LACOUR / BALMER / BHOWMIK / NOGUEIRA / ZURLO / HOY / BOURDAROT
Target
- ID
- 53144
- Name
- DH_Tau_B
- RA
- 67.4231375
- DEC
- 26.549479722222223
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 | 48.2910 | 48.7980 | 40.1000 | 40.1000 |
| U1-U3 | 91.6630 | 92.5180 | 44.8000 | 44.5000 |
| U1-U4 | 129.9220 | 130.0910 | 61.9850 | 61.2480 |
| U2-U3 | 43.7080 | 44.0350 | 49.9000 | 49.5000 |
| U2-U4 | 86.9800 | 86.4100 | 73.9160 | 73.0270 |
| U3-U4 | 50.2880 | 49.2670 | 94.6050 | 93.9150 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 116.28QW.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60991.30431682 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | DH Tau B |
| HIERARCH ESO INS SOBJ NAME | DH_Tau_B |
| RA | 67.423294 |
| DEC | 26.54962 |
| 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 | 418.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 100.0 |
| HIERARCH ESO DET2 NDIT | 4 |
| HIERARCH ESO ISS PBL12 START | 48.291 |
| HIERARCH ESO ISS PBL12 END | 48.798 |
| HIERARCH ESO ISS PBLA12 START | 40.1 |
| HIERARCH ESO ISS PBLA12 END | 40.1 |
| HIERARCH ESO ISS PBL13 START | 91.663 |
| HIERARCH ESO ISS PBL13 END | 92.518 |
| HIERARCH ESO ISS PBLA13 START | 44.8 |
| HIERARCH ESO ISS PBLA13 END | 44.5 |
| HIERARCH ESO ISS PBL14 START | 129.922 |
| HIERARCH ESO ISS PBL14 END | 130.091 |
| HIERARCH ESO ISS PBLA14 START | 61.985 |
| HIERARCH ESO ISS PBLA14 END | 61.248 |
| HIERARCH ESO ISS PBL23 START | 43.708 |
| HIERARCH ESO ISS PBL23 END | 44.035 |
| HIERARCH ESO ISS PBLA23 START | 49.9 |
| HIERARCH ESO ISS PBLA23 END | 49.5 |
| HIERARCH ESO ISS PBL24 START | 86.98 |
| HIERARCH ESO ISS PBL24 END | 86.41 |
| HIERARCH ESO ISS PBLA24 START | 73.916 |
| HIERARCH ESO ISS PBLA24 END | 73.027 |
| HIERARCH ESO ISS PBL34 START | 50.288 |
| HIERARCH ESO ISS PBL34 END | 49.267 |
| HIERARCH ESO ISS PBLA34 START | 94.605 |
| HIERARCH ESO ISS PBLA34 END | 93.915 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005636 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004519 |
| HIERARCH ESO ISS AMBI TEMP | 12.75 |
| HIERARCH ESO ISS AMBI FWHM START | 0.49 |
| HIERARCH ESO ISS AMBI FWHM END | 0.71 |
| HIERARCH ESO FT ROBJ NAME | DH_Tau_B |
| HIERARCH ESO FT ROBJ ALPHA | 042941.553 |
| HIERARCH ESO FT ROBJ DELTA | 263258.127 |