Exposure
ID
GRAVI.2022-06-20T05:21:47.835_1
Header ID
GRAVI.2022-06-20T05:21:47.835
Date updated
2022-06-20 13:30:54 UTC+0000
Release date
2023-06-20 13:30:53 UTC+0000
UTC Start
2022-06-20 05:21:47.835
UTC End
2022-06-20 05:27:07.835
MJD Start
59750.22347031
MJD End
59750.2271740137
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.001159
Ambient temperature (°C)
8.68
Seeing (arcsec)
2.17
Observation
ID
51283
Category
science
Program ID
109.22ZA.003
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
38218
Name
S2
RA
266.416937
DEC
-29.0072
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 55.8930 55.7920 30.8000 31.3000
U1-U3 101.0200 100.7860 37.1000 37.7000
U1-U4 127.7030 127.1710 65.6070 66.1930
U2-U3 45.8950 45.7610 44.9000 45.4000
U2-U4 87.8420 87.4560 86.9250 87.6060
U3-U4 61.8960 61.7200 116.6730 117.4490
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 109.22ZA.003
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59750.22347031
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416937
DEC -29.0072
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 342.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 32
HIERARCH ESO ISS PBL12 START 55.893
HIERARCH ESO ISS PBL12 END 55.792
HIERARCH ESO ISS PBLA12 START 30.8
HIERARCH ESO ISS PBLA12 END 31.3
HIERARCH ESO ISS PBL13 START 101.02
HIERARCH ESO ISS PBL13 END 100.786
HIERARCH ESO ISS PBLA13 START 37.1
HIERARCH ESO ISS PBLA13 END 37.7
HIERARCH ESO ISS PBL14 START 127.703
HIERARCH ESO ISS PBL14 END 127.171
HIERARCH ESO ISS PBLA14 START 65.607
HIERARCH ESO ISS PBLA14 END 66.193
HIERARCH ESO ISS PBL23 START 45.895
HIERARCH ESO ISS PBL23 END 45.761
HIERARCH ESO ISS PBLA23 START 44.9
HIERARCH ESO ISS PBLA23 END 45.4
HIERARCH ESO ISS PBL24 START 87.842
HIERARCH ESO ISS PBL24 END 87.456
HIERARCH ESO ISS PBLA24 START 86.925
HIERARCH ESO ISS PBLA24 END 87.606
HIERARCH ESO ISS PBL34 START 61.896
HIERARCH ESO ISS PBL34 END 61.72
HIERARCH ESO ISS PBLA34 START 116.673
HIERARCH ESO ISS PBLA34 END 117.449
HIERARCH ESO ISS AMBI TAU0 START 0.001315
HIERARCH ESO ISS AMBI TAU0 END 0.001003
HIERARCH ESO ISS AMBI TEMP 8.68
HIERARCH ESO ISS AMBI FWHM START 2.17
HIERARCH ESO ISS AMBI FWHM END 2.17
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5299