Exposure
- ID
- GRAVI.2025-11-12T06:48:33.898_2
- Header ID
- GRAVI.2025-11-12T06:48:33.898
- Date updated
- 2025-11-12 07:05:49 UTC+0000
- Release date
- 2026-11-12 07:05:49 UTC+0000
- UTC Start
- 2025-11-12 06:48:33.898
- UTC End
- 2025-11-12 06:55:13.898
- MJD Start
- 60991.28372567
- MJD End
- 60991.28835529963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004888999999999999
- Ambient temperature (°C)
- 12.99
- Seeing (arcsec)
- 0.47
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 | 45.9550 | 46.5270 | 40.1000 | 40.1000 |
| U1-U3 | 87.5940 | 88.6080 | 45.5000 | 45.4000 |
| U1-U4 | 128.3250 | 128.8290 | 64.9630 | 64.2880 |
| U2-U3 | 42.0710 | 42.4900 | 51.5000 | 51.1000 |
| U2-U4 | 88.7630 | 88.4420 | 77.5430 | 76.7140 |
| U3-U4 | 54.2200 | 53.3610 | 97.4800 | 96.8130 |
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 | 60991.28372567 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | DH Tau B |
| HIERARCH ESO INS SOBJ NAME | DH_Tau_B |
| RA | 67.423299 |
| 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 | 45.955 |
| HIERARCH ESO ISS PBL12 END | 46.527 |
| HIERARCH ESO ISS PBLA12 START | 40.1 |
| HIERARCH ESO ISS PBLA12 END | 40.1 |
| HIERARCH ESO ISS PBL13 START | 87.594 |
| HIERARCH ESO ISS PBL13 END | 88.608 |
| HIERARCH ESO ISS PBLA13 START | 45.5 |
| HIERARCH ESO ISS PBLA13 END | 45.4 |
| HIERARCH ESO ISS PBL14 START | 128.325 |
| HIERARCH ESO ISS PBL14 END | 128.829 |
| HIERARCH ESO ISS PBLA14 START | 64.963 |
| HIERARCH ESO ISS PBLA14 END | 64.288 |
| HIERARCH ESO ISS PBL23 START | 42.071 |
| HIERARCH ESO ISS PBL23 END | 42.49 |
| HIERARCH ESO ISS PBLA23 START | 51.5 |
| HIERARCH ESO ISS PBLA23 END | 51.1 |
| HIERARCH ESO ISS PBL24 START | 88.763 |
| HIERARCH ESO ISS PBL24 END | 88.442 |
| HIERARCH ESO ISS PBLA24 START | 77.543 |
| HIERARCH ESO ISS PBLA24 END | 76.714 |
| HIERARCH ESO ISS PBL34 START | 54.22 |
| HIERARCH ESO ISS PBL34 END | 53.361 |
| HIERARCH ESO ISS PBLA34 START | 97.48 |
| HIERARCH ESO ISS PBLA34 END | 96.813 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004506 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.005272 |
| HIERARCH ESO ISS AMBI TEMP | 12.99 |
| HIERARCH ESO ISS AMBI FWHM START | 0.53 |
| HIERARCH ESO ISS AMBI FWHM END | 0.41 |
| HIERARCH ESO FT ROBJ NAME | DH_Tau_B |
| HIERARCH ESO FT ROBJ ALPHA | 042941.553 |
| HIERARCH ESO FT ROBJ DELTA | 263258.127 |