Exposure
- ID
- GRAVI.2022-05-22T09:29:53.121_2
- Header ID
- GRAVI.2022-05-22T09:29:53.121
- Date updated
- 2022-05-24 13:59:26 UTC+0000
- Release date
- 2023-05-22 09:40:44 UTC+0000
- UTC Start
- 2022-05-22 09:29:53.121
- UTC End
- 2022-05-22 09:35:13.121
- MJD Start
- 59721.39575372
- MJD End
- 59721.3994574237
- Exposure time (s)
- 320.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.002046
- Ambient temperature (°C)
- 8.2
- Seeing (arcsec)
- 1.21
Observation
- ID
- 50963
- Category
- science
- Program ID
- 109.22ZA.002
- Program Title
- THE GALACTIC CENTER WITH GRAVITY - PROBING EVENT HORIZON SCALE PHYSICS WITH STARS AND FLARES
- Program Type
- GTO
- PI / COI
- EISENHAUER/ GILLESSEN/ GENZEL/ OTT/ STRAUBMEIER/ ROUSSELET-PERRAUT/ BRANDNER/ GARCIA/ ECKART/ DE ZEEUW/ STADLER/ VON FELLENBERG/ WIDMANN/ PERRIN/ PAUMARD/ HORROBIN/ VINCENT/ HEIßEL/ DRESCHER/ BOURDAROT/ STRAUB/ CAO
Target
- ID
- 35996
- Name
- HD206893
- RA
- 326.341270833333
- DEC
- -12.7833522222222
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 | 54.2640 | 54.3970 | 20.1000 | 20.8000 |
| U1-U3 | 97.8690 | 98.1950 | 26.7000 | 27.4000 |
| U1-U4 | 123.8260 | 124.6120 | 56.1440 | 56.6960 |
| U2-U3 | 44.3970 | 44.5920 | 34.8000 | 35.4000 |
| U2-U4 | 86.0580 | 86.6090 | 77.9020 | 78.2910 |
| U3-U4 | 61.6610 | 61.8760 | 107.4040 | 107.6520 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 109.22ZA.002 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 59721.39575372 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,DIRECT |
| HIERARCH ESO OBS TARG NAME | HD206893 |
| HIERARCH ESO INS SOBJ NAME | HD206893Cn |
| RA | 326.343911 |
| DEC | -12.78329 |
| 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 | 339.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 10.0 |
| HIERARCH ESO DET2 NDIT | 32 |
| HIERARCH ESO ISS PBL12 START | 54.264 |
| HIERARCH ESO ISS PBL12 END | 54.397 |
| HIERARCH ESO ISS PBLA12 START | 20.1 |
| HIERARCH ESO ISS PBLA12 END | 20.8 |
| HIERARCH ESO ISS PBL13 START | 97.869 |
| HIERARCH ESO ISS PBL13 END | 98.195 |
| HIERARCH ESO ISS PBLA13 START | 26.7 |
| HIERARCH ESO ISS PBLA13 END | 27.4 |
| HIERARCH ESO ISS PBL14 START | 123.826 |
| HIERARCH ESO ISS PBL14 END | 124.612 |
| HIERARCH ESO ISS PBLA14 START | 56.144 |
| HIERARCH ESO ISS PBLA14 END | 56.696 |
| HIERARCH ESO ISS PBL23 START | 44.397 |
| HIERARCH ESO ISS PBL23 END | 44.592 |
| HIERARCH ESO ISS PBLA23 START | 34.8 |
| HIERARCH ESO ISS PBLA23 END | 35.4 |
| HIERARCH ESO ISS PBL24 START | 86.058 |
| HIERARCH ESO ISS PBL24 END | 86.609 |
| HIERARCH ESO ISS PBLA24 START | 77.902 |
| HIERARCH ESO ISS PBLA24 END | 78.291 |
| HIERARCH ESO ISS PBL34 START | 61.661 |
| HIERARCH ESO ISS PBL34 END | 61.876 |
| HIERARCH ESO ISS PBLA34 START | 107.404 |
| HIERARCH ESO ISS PBLA34 END | 107.652 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.002184 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.001908 |
| HIERARCH ESO ISS AMBI TEMP | 8.2 |
| HIERARCH ESO ISS AMBI FWHM START | 1.26 |
| HIERARCH ESO ISS AMBI FWHM END | 1.16 |
| HIERARCH ESO FT ROBJ NAME | HD206893 |
| HIERARCH ESO FT ROBJ ALPHA | 214521.905 |
| HIERARCH ESO FT ROBJ DELTA | -124700.068 |