Exposure
ID
GRAVI.2022-04-24T07:05:44.173_1
Header ID
GRAVI.2022-04-24T07:05:44.173
Date updated
2022-04-24 07:20:32 UTC+0000
Release date
2023-04-24 07:20:32 UTC+0000
UTC Start
2022-04-24 07:05:44.173
UTC End
2022-04-24 07:11:04.173
MJD Start
59693.29565015
MJD End
59693.2993538537
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0036355
Ambient temperature (°C)
10.62
Seeing (arcsec)
0.67
Observation
ID
50591
Category
science
Program ID
109.22ZA.001
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
37784
Name
S2
RA
266.416944
DEC
-29.00707
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 56.5230 56.5350 17.3000 18.1000
U1-U3 102.1990 102.2560 23.4000 24.2000
U1-U4 127.7490 128.1590 50.7560 51.5970
U2-U3 46.3820 46.4350 30.8000 31.6000
U2-U4 86.3770 86.8390 71.8820 72.6730
U3-U4 59.7430 60.1180 102.5350 103.1460
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 109.22ZA.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59693.29565015
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416944
DEC -29.00707
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 56.523
HIERARCH ESO ISS PBL12 END 56.535
HIERARCH ESO ISS PBLA12 START 17.3
HIERARCH ESO ISS PBLA12 END 18.1
HIERARCH ESO ISS PBL13 START 102.199
HIERARCH ESO ISS PBL13 END 102.256
HIERARCH ESO ISS PBLA13 START 23.4
HIERARCH ESO ISS PBLA13 END 24.2
HIERARCH ESO ISS PBL14 START 127.749
HIERARCH ESO ISS PBL14 END 128.159
HIERARCH ESO ISS PBLA14 START 50.756
HIERARCH ESO ISS PBLA14 END 51.597
HIERARCH ESO ISS PBL23 START 46.382
HIERARCH ESO ISS PBL23 END 46.435
HIERARCH ESO ISS PBLA23 START 30.8
HIERARCH ESO ISS PBLA23 END 31.6
HIERARCH ESO ISS PBL24 START 86.377
HIERARCH ESO ISS PBL24 END 86.839
HIERARCH ESO ISS PBLA24 START 71.882
HIERARCH ESO ISS PBLA24 END 72.673
HIERARCH ESO ISS PBL34 START 59.743
HIERARCH ESO ISS PBL34 END 60.118
HIERARCH ESO ISS PBLA34 START 102.535
HIERARCH ESO ISS PBLA34 END 103.146
HIERARCH ESO ISS AMBI TAU0 START 0.003664
HIERARCH ESO ISS AMBI TAU0 END 0.003607
HIERARCH ESO ISS AMBI TEMP 10.62
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.68
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5310