Exposure
ID
GRAVI.2023-06-03T06:08:09.611_1
Header ID
GRAVI.2023-06-03T06:08:09.611
Date updated
2023-06-03 06:26:41 UTC+0000
Release date
2024-06-03 06:26:41 UTC+0000
UTC Start
2023-06-03 06:08:09.611
UTC End
2023-06-03 06:14:09.611
MJD Start
60098.25566679
MJD End
60098.2598334567
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0037015
Ambient temperature (°C)
13.78
Seeing (arcsec)
0.51
Observation
ID
55641
Category
science
Program ID
111.24H1.002
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/ BRANDNER/ ROUSSELET-PERRAUT/ PERRIN/ GARCIA/ ECKART/ DE ZEEUW/ WIDMANN/ PAUMARD/ HORROBIN/ VINCENT/ DRESCHER/ BOURDAROT/ CAO/ LUTZ/ STURM/ RIBEIRO
Target
ID
41204
Name
S4
RA
266.416794
DEC
-29.00721
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
LOW-SPLIT
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 56.1990 56.1180 28.7000 29.3000
U1-U3 101.7220 101.5370 35.1000 35.7000
U1-U4 129.2360 128.8470 63.3240 64.0310
U2-U3 46.2940 46.1900 42.8000 43.5000
U2-U4 88.9200 88.6560 84.3680 85.1460
U3-U4 62.3530 62.2500 113.8640 114.7000
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24H1.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60098.25566679
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416794
DEC -29.00721
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 56.199
HIERARCH ESO ISS PBL12 END 56.118
HIERARCH ESO ISS PBLA12 START 28.7
HIERARCH ESO ISS PBLA12 END 29.3
HIERARCH ESO ISS PBL13 START 101.722
HIERARCH ESO ISS PBL13 END 101.537
HIERARCH ESO ISS PBLA13 START 35.1
HIERARCH ESO ISS PBLA13 END 35.7
HIERARCH ESO ISS PBL14 START 129.236
HIERARCH ESO ISS PBL14 END 128.847
HIERARCH ESO ISS PBLA14 START 63.324
HIERARCH ESO ISS PBLA14 END 64.031
HIERARCH ESO ISS PBL23 START 46.294
HIERARCH ESO ISS PBL23 END 46.19
HIERARCH ESO ISS PBLA23 START 42.8
HIERARCH ESO ISS PBLA23 END 43.5
HIERARCH ESO ISS PBL24 START 88.92
HIERARCH ESO ISS PBL24 END 88.656
HIERARCH ESO ISS PBLA24 START 84.368
HIERARCH ESO ISS PBLA24 END 85.146
HIERARCH ESO ISS PBL34 START 62.353
HIERARCH ESO ISS PBL34 END 62.25
HIERARCH ESO ISS PBLA34 START 113.864
HIERARCH ESO ISS PBLA34 END 114.7
HIERARCH ESO ISS AMBI TAU0 START 0.003863
HIERARCH ESO ISS AMBI TAU0 END 0.00354
HIERARCH ESO ISS AMBI TEMP 13.78
HIERARCH ESO ISS AMBI FWHM START 0.5
HIERARCH ESO ISS AMBI FWHM END 0.52
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1060
HIERARCH ESO FT ROBJ DELTA -290027.5231