Exposure
- ID
- GRAVI.2025-11-12T06:55:51.917_2
- Header ID
- GRAVI.2025-11-12T06:55:51.917
- Date updated
- 2025-11-12 07:10:43 UTC+0000
- Release date
- 2026-11-12 07:10:43 UTC+0000
- UTC Start
- 2025-11-12 06:55:51.917
- UTC End
- 2025-11-12 07:02:31.917
- MJD Start
- 60991.28879533
- MJD End
- 60991.29342495963
- Exposure time (s)
- 400.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.005128499999999999
- Ambient temperature (°C)
- 12.98
- Seeing (arcsec)
- 0.48
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 | 46.5540 | 47.1090 | 40.1000 | 40.2000 |
| U1-U3 | 88.6560 | 89.6290 | 45.4000 | 45.2000 |
| U1-U4 | 128.8520 | 129.2700 | 64.2550 | 63.5690 |
| U2-U3 | 42.5100 | 42.9040 | 51.1000 | 50.8000 |
| U2-U4 | 88.4250 | 88.0430 | 76.6740 | 75.8360 |
| U3-U4 | 53.3190 | 52.4230 | 96.7810 | 96.1130 |
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 | 60991.28879533 |
| 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 | 26.54961 |
| 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 | 46.554 |
| HIERARCH ESO ISS PBL12 END | 47.109 |
| HIERARCH ESO ISS PBLA12 START | 40.1 |
| HIERARCH ESO ISS PBLA12 END | 40.2 |
| HIERARCH ESO ISS PBL13 START | 88.656 |
| HIERARCH ESO ISS PBL13 END | 89.629 |
| HIERARCH ESO ISS PBLA13 START | 45.4 |
| HIERARCH ESO ISS PBLA13 END | 45.2 |
| HIERARCH ESO ISS PBL14 START | 128.852 |
| HIERARCH ESO ISS PBL14 END | 129.27 |
| HIERARCH ESO ISS PBLA14 START | 64.255 |
| HIERARCH ESO ISS PBLA14 END | 63.569 |
| HIERARCH ESO ISS PBL23 START | 42.51 |
| HIERARCH ESO ISS PBL23 END | 42.904 |
| HIERARCH ESO ISS PBLA23 START | 51.1 |
| HIERARCH ESO ISS PBLA23 END | 50.8 |
| HIERARCH ESO ISS PBL24 START | 88.425 |
| HIERARCH ESO ISS PBL24 END | 88.043 |
| HIERARCH ESO ISS PBLA24 START | 76.674 |
| HIERARCH ESO ISS PBLA24 END | 75.836 |
| HIERARCH ESO ISS PBL34 START | 53.319 |
| HIERARCH ESO ISS PBL34 END | 52.423 |
| HIERARCH ESO ISS PBLA34 START | 96.781 |
| HIERARCH ESO ISS PBLA34 END | 96.113 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.005272 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004985 |
| HIERARCH ESO ISS AMBI TEMP | 12.98 |
| HIERARCH ESO ISS AMBI FWHM START | 0.41 |
| HIERARCH ESO ISS AMBI FWHM END | 0.55 |
| HIERARCH ESO FT ROBJ NAME | DH_Tau_B |
| HIERARCH ESO FT ROBJ ALPHA | 042941.553 |
| HIERARCH ESO FT ROBJ DELTA | 263258.127 |