Exposure
- ID
- GRAVI.2023-07-31T03:13:53.411_2
- Header ID
- GRAVI.2023-07-31T03:13:53.411
- Date updated
- 2023-07-31 03:30:23 UTC+0000
- Release date
- 2024-07-31 03:30:23 UTC+0000
- UTC Start
- 2023-07-31 03:13:53.411
- UTC End
- 2023-07-31 03:19:53.411
- MJD Start
- 60156.13464596
- MJD End
- 60156.13881262667
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0037459999999999998
- Ambient temperature (°C)
- 18.15
- Seeing (arcsec)
- 0.975
Observation
- ID
- 56474
- Category
- science
- Program ID
- 111.24H1.004
- 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/ BRANDNER/ ROUSSELET-PERRAUT/ PERRIN/ GARCIA/ ECKART/ DE ZEEUW/ WIDMANN/ PAUMARD/ HORROBIN/ VINCENT/ DRESCHER/ BOURDAROT/ CAO/ LUTZ/ STURM/ RIBEIRO
Target
- ID
- 41849
- Name
- IRS16C
- RA
- 266.4171083333333
- DEC
- -29.007645
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 | 55.2030 | 55.0270 | 33.6000 | 34.1000 |
| U1-U3 | 99.4140 | 99.0060 | 39.9000 | 40.4000 |
| U1-U4 | 123.9850 | 123.0290 | 68.8270 | 69.4480 |
| U2-U3 | 44.9700 | 44.7340 | 47.7000 | 48.3000 |
| U2-U4 | 85.1080 | 84.4000 | 90.8200 | 91.6190 |
| U3-U4 | 60.6220 | 60.2900 | 121.2620 | 122.2460 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 111.24H1.004 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60156.13464596 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | IRS16C |
| HIERARCH ESO INS SOBJ NAME | S4 |
| RA | 266.417098 |
| DEC | -29.00725 |
| HIERARCH ESO INS SPEC RES | LOW |
| HIERARCH ESO INS POLA MODE | SPLIT |
| 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 | 389.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 55.203 |
| HIERARCH ESO ISS PBL12 END | 55.027 |
| HIERARCH ESO ISS PBLA12 START | 33.6 |
| HIERARCH ESO ISS PBLA12 END | 34.1 |
| HIERARCH ESO ISS PBL13 START | 99.414 |
| HIERARCH ESO ISS PBL13 END | 99.006 |
| HIERARCH ESO ISS PBLA13 START | 39.9 |
| HIERARCH ESO ISS PBLA13 END | 40.4 |
| HIERARCH ESO ISS PBL14 START | 123.985 |
| HIERARCH ESO ISS PBL14 END | 123.029 |
| HIERARCH ESO ISS PBLA14 START | 68.827 |
| HIERARCH ESO ISS PBLA14 END | 69.448 |
| HIERARCH ESO ISS PBL23 START | 44.97 |
| HIERARCH ESO ISS PBL23 END | 44.734 |
| HIERARCH ESO ISS PBLA23 START | 47.7 |
| HIERARCH ESO ISS PBLA23 END | 48.3 |
| HIERARCH ESO ISS PBL24 START | 85.108 |
| HIERARCH ESO ISS PBL24 END | 84.4 |
| HIERARCH ESO ISS PBLA24 START | 90.82 |
| HIERARCH ESO ISS PBLA24 END | 91.619 |
| HIERARCH ESO ISS PBL34 START | 60.622 |
| HIERARCH ESO ISS PBL34 END | 60.29 |
| HIERARCH ESO ISS PBLA34 START | 121.262 |
| HIERARCH ESO ISS PBLA34 END | 122.246 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.003944 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.003548 |
| HIERARCH ESO ISS AMBI TEMP | 18.15 |
| HIERARCH ESO ISS AMBI FWHM START | 0.99 |
| HIERARCH ESO ISS AMBI FWHM END | 0.96 |
| HIERARCH ESO FT ROBJ NAME | IRS16C |
| HIERARCH ESO FT ROBJ ALPHA | 174540.1060 |
| HIERARCH ESO FT ROBJ DELTA | -290027.5220 |