Exposure
- ID
- GRAVI.2025-11-12T07:10:54.955_2
- Header ID
- GRAVI.2025-11-12T07:10:54.955
- Date updated
- 2025-11-12 07:25:48 UTC+0000
- Release date
- 2026-11-12 07:25:48 UTC+0000
- UTC Start
- 2025-11-12 07:10:54.955
- UTC End
- 2025-11-12 07:17:34.955
- MJD Start
- 60991.29924716
- MJD End
- 60991.30387678963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005723000000000001
- Ambient temperature (°C)
- 12.79
- Seeing (arcsec)
- 0.495
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 | 47.7410 | 48.2660 | 40.2000 | 40.1000 |
| U1-U3 | 90.7240 | 91.6210 | 45.0000 | 44.8000 |
| U1-U4 | 129.6610 | 129.9120 | 62.7440 | 62.0200 |
| U2-U3 | 43.3410 | 43.6920 | 50.3000 | 49.9000 |
| U2-U4 | 87.5180 | 87.0060 | 74.8340 | 73.9590 |
| U3-U4 | 51.3210 | 50.3360 | 95.3220 | 94.6380 |
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 | 60991.29924716 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | DH Tau B |
| HIERARCH ESO INS SOBJ NAME | DH_Tau_B |
| RA | 67.423298 |
| 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 | 47.741 |
| HIERARCH ESO ISS PBL12 END | 48.266 |
| HIERARCH ESO ISS PBLA12 START | 40.2 |
| HIERARCH ESO ISS PBLA12 END | 40.1 |
| HIERARCH ESO ISS PBL13 START | 90.724 |
| HIERARCH ESO ISS PBL13 END | 91.621 |
| HIERARCH ESO ISS PBLA13 START | 45.0 |
| HIERARCH ESO ISS PBLA13 END | 44.8 |
| HIERARCH ESO ISS PBL14 START | 129.661 |
| HIERARCH ESO ISS PBL14 END | 129.912 |
| HIERARCH ESO ISS PBLA14 START | 62.744 |
| HIERARCH ESO ISS PBLA14 END | 62.02 |
| HIERARCH ESO ISS PBL23 START | 43.341 |
| HIERARCH ESO ISS PBL23 END | 43.692 |
| HIERARCH ESO ISS PBLA23 START | 50.3 |
| HIERARCH ESO ISS PBLA23 END | 49.9 |
| HIERARCH ESO ISS PBL24 START | 87.518 |
| HIERARCH ESO ISS PBL24 END | 87.006 |
| HIERARCH ESO ISS PBLA24 START | 74.834 |
| HIERARCH ESO ISS PBLA24 END | 73.959 |
| HIERARCH ESO ISS PBL34 START | 51.321 |
| HIERARCH ESO ISS PBL34 END | 50.336 |
| HIERARCH ESO ISS PBLA34 START | 95.322 |
| HIERARCH ESO ISS PBLA34 END | 94.638 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00581 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005636 |
| HIERARCH ESO ISS AMBI TEMP | 12.79 |
| HIERARCH ESO ISS AMBI FWHM START | 0.5 |
| HIERARCH ESO ISS AMBI FWHM END | 0.49 |
| HIERARCH ESO FT ROBJ NAME | DH_Tau_B |
| HIERARCH ESO FT ROBJ ALPHA | 042941.553 |
| HIERARCH ESO FT ROBJ DELTA | 263258.127 |