Exposure
- ID
- GRAVI.2023-01-08T02:49:28.231_2
- Header ID
- GRAVI.2023-01-08T02:49:28.231
- Date updated
- 2023-01-08 02:55:42 UTC+0000
- Release date
- 2024-01-08 02:55:42 UTC+0000
- UTC Start
- 2023-01-08 02:49:28.231
- UTC End
- 2023-01-08 02:49:52.231
- MJD Start
- 59952.11768786
- MJD End
- 59952.1179656378
- Exposure time (s)
- 24.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.004266
- Ambient temperature (°C)
- 11.78
- Seeing (arcsec)
- 0.71
Observation
- ID
- 49346
- Category
- science
- Program ID
- 108.227A.004
- Program Title
- DEEP EXPLORATION OF THE AB AUR SYSTEM: CONFIRMATION OF A PROTOPLANET
- Program Type
- Normal
- PI / COI
- BOCCALETTI/ LACOUR/ MILLI/ MAIRE/ BECK/ PIETU/ TANG/ DI FOLCO/ DUTREY/ GUILLOTEAU/ PANTIN/ HUELAMO
Target
- ID
- 36917
- Name
- AB_Aur
- RA
- 73.9410208333333
- DEC
- 30.5511925
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 | 40.2030 | 40.2760 | 41.4000 | 41.4000 |
| U1-U3 | 77.6830 | 77.8200 | 48.1000 | 48.1000 |
| U1-U4 | 122.5040 | 122.6180 | 70.0440 | 69.9700 |
| U2-U3 | 38.0410 | 38.1030 | 55.1000 | 55.1000 |
| U2-U4 | 89.3230 | 89.3350 | 82.5050 | 82.4120 |
| U3-U4 | 58.2240 | 58.1630 | 99.9800 | 99.8970 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 108.227A.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 59952.11768786 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | V AB Aur |
| HIERARCH ESO INS SOBJ NAME | ABAur_f1 |
| RA | 73.942915 |
| DEC | 30.55093 |
| 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 | 48.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 0.3 |
| HIERARCH ESO DET2 NDIT | 80 |
| HIERARCH ESO ISS PBL12 START | 40.203 |
| HIERARCH ESO ISS PBL12 END | 40.276 |
| HIERARCH ESO ISS PBLA12 START | 41.4 |
| HIERARCH ESO ISS PBLA12 END | 41.4 |
| HIERARCH ESO ISS PBL13 START | 77.683 |
| HIERARCH ESO ISS PBL13 END | 77.82 |
| HIERARCH ESO ISS PBLA13 START | 48.1 |
| HIERARCH ESO ISS PBLA13 END | 48.1 |
| HIERARCH ESO ISS PBL14 START | 122.504 |
| HIERARCH ESO ISS PBL14 END | 122.618 |
| HIERARCH ESO ISS PBLA14 START | 70.044 |
| HIERARCH ESO ISS PBLA14 END | 69.97 |
| HIERARCH ESO ISS PBL23 START | 38.041 |
| HIERARCH ESO ISS PBL23 END | 38.103 |
| HIERARCH ESO ISS PBLA23 START | 55.1 |
| HIERARCH ESO ISS PBLA23 END | 55.1 |
| HIERARCH ESO ISS PBL24 START | 89.323 |
| HIERARCH ESO ISS PBL24 END | 89.335 |
| HIERARCH ESO ISS PBLA24 START | 82.505 |
| HIERARCH ESO ISS PBLA24 END | 82.412 |
| HIERARCH ESO ISS PBL34 START | 58.224 |
| HIERARCH ESO ISS PBL34 END | 58.163 |
| HIERARCH ESO ISS PBLA34 START | 99.98 |
| HIERARCH ESO ISS PBLA34 END | 99.897 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.004266 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004266 |
| HIERARCH ESO ISS AMBI TEMP | 11.78 |
| HIERARCH ESO ISS AMBI FWHM START | 0.71 |
| HIERARCH ESO ISS AMBI FWHM END | 0.71 |
| HIERARCH ESO FT ROBJ NAME | AB_Aur |
| HIERARCH ESO FT ROBJ ALPHA | 045545.845 |
| HIERARCH ESO FT ROBJ DELTA | 303304.293 |