Exposure
ID
GRAVI.2022-06-20T07:18:09.128_1
Header ID
GRAVI.2022-06-20T07:18:09.128
Date updated
2022-06-20 13:30:55 UTC+0000
Release date
2023-06-20 13:30:53 UTC+0000
UTC Start
2022-06-20 07:18:09.128
UTC End
2022-06-20 07:23:29.128
MJD Start
59750.30427231
MJD End
59750.3079760137
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.002805
Ambient temperature (°C)
7.42
Seeing (arcsec)
1.0
Observation
ID
51285
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
38220
Name
S2
RA
266.41687
DEC
-29.00722
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 51.8550 51.5400 39.0000 39.3000
U1-U3 91.7020 90.9830 45.2000 45.4000
U1-U4 106.1840 104.5620 76.3590 76.8420
U2-U3 40.5400 40.1310 53.1000 53.4000
U2-U4 72.1930 71.0540 102.2020 103.0990
U3-U4 54.9500 54.5000 136.0660 137.2590
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 59750.30427231
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.41687
DEC -29.00722
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 51.855
HIERARCH ESO ISS PBL12 END 51.54
HIERARCH ESO ISS PBLA12 START 39.0
HIERARCH ESO ISS PBLA12 END 39.3
HIERARCH ESO ISS PBL13 START 91.702
HIERARCH ESO ISS PBL13 END 90.983
HIERARCH ESO ISS PBLA13 START 45.2
HIERARCH ESO ISS PBLA13 END 45.4
HIERARCH ESO ISS PBL14 START 106.184
HIERARCH ESO ISS PBL14 END 104.562
HIERARCH ESO ISS PBLA14 START 76.359
HIERARCH ESO ISS PBLA14 END 76.842
HIERARCH ESO ISS PBL23 START 40.54
HIERARCH ESO ISS PBL23 END 40.131
HIERARCH ESO ISS PBLA23 START 53.1
HIERARCH ESO ISS PBLA23 END 53.4
HIERARCH ESO ISS PBL24 START 72.193
HIERARCH ESO ISS PBL24 END 71.054
HIERARCH ESO ISS PBLA24 START 102.202
HIERARCH ESO ISS PBLA24 END 103.099
HIERARCH ESO ISS PBL34 START 54.95
HIERARCH ESO ISS PBL34 END 54.5
HIERARCH ESO ISS PBLA34 START 136.066
HIERARCH ESO ISS PBLA34 END 137.259
HIERARCH ESO ISS AMBI TAU0 START 0.002805
HIERARCH ESO ISS AMBI TAU0 END 0.002805
HIERARCH ESO ISS AMBI TEMP 7.42
HIERARCH ESO ISS AMBI FWHM START 1.0
HIERARCH ESO ISS AMBI FWHM END 1.0
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5299