Exposure
ID
GRAVI.2022-05-20T10:09:06.405_1
Header ID
GRAVI.2022-05-20T10:09:06.405
Date updated
2022-05-20 10:15:58 UTC+0000
Release date
2023-05-20 10:15:58 UTC+0000
UTC Start
2022-05-20 10:09:06.405
UTC End
2022-05-20 10:09:26.405
MJD Start
59719.4229908
MJD End
59719.4232222815
Exposure time (s)
20.0
Validation level
1
Tau 0: Coherence time (s)
0.006152
Ambient temperature (°C)
11.97
Seeing (arcsec)
0.46
Observation
ID
50946
Category
science
Program ID
109.22ZA.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/ ROUSSELET-PERRAUT/ BRANDNER/ GARCIA/ ECKART/ DE ZEEUW/ STADLER/ VON FELLENBERG/ WIDMANN/ PERRIN/ PAUMARD/ HORROBIN/ VINCENT/ HEIßEL/ DRESCHER/ BOURDAROT/ STRAUB/ CAO
Target
ID
37997
Name
S2
RA
266.416858
DEC
-29.00723
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 48.7620 48.7250 40.8000 40.8000
U1-U3 84.7100 84.6260 46.8000 46.8000
U1-U4 90.6180 90.4330 80.4870 80.5310
U2-U3 36.5800 36.5320 54.9000 54.9000
U2-U4 61.5830 61.4610 110.8830 110.9900
U3-U4 51.1190 51.0800 147.2810 147.4120
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 109.22ZA.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59719.4229908
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416858
DEC -29.00723
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 34.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 2
HIERARCH ESO ISS PBL12 START 48.762
HIERARCH ESO ISS PBL12 END 48.725
HIERARCH ESO ISS PBLA12 START 40.8
HIERARCH ESO ISS PBLA12 END 40.8
HIERARCH ESO ISS PBL13 START 84.71
HIERARCH ESO ISS PBL13 END 84.626
HIERARCH ESO ISS PBLA13 START 46.8
HIERARCH ESO ISS PBLA13 END 46.8
HIERARCH ESO ISS PBL14 START 90.618
HIERARCH ESO ISS PBL14 END 90.433
HIERARCH ESO ISS PBLA14 START 80.487
HIERARCH ESO ISS PBLA14 END 80.531
HIERARCH ESO ISS PBL23 START 36.58
HIERARCH ESO ISS PBL23 END 36.532
HIERARCH ESO ISS PBLA23 START 54.9
HIERARCH ESO ISS PBLA23 END 54.9
HIERARCH ESO ISS PBL24 START 61.583
HIERARCH ESO ISS PBL24 END 61.461
HIERARCH ESO ISS PBLA24 START 110.883
HIERARCH ESO ISS PBLA24 END 110.99
HIERARCH ESO ISS PBL34 START 51.119
HIERARCH ESO ISS PBL34 END 51.08
HIERARCH ESO ISS PBLA34 START 147.281
HIERARCH ESO ISS PBLA34 END 147.412
HIERARCH ESO ISS AMBI TAU0 START 0.006152
HIERARCH ESO ISS AMBI TAU0 END 0.006152
HIERARCH ESO ISS AMBI TEMP 11.97
HIERARCH ESO ISS AMBI FWHM START 0.46
HIERARCH ESO ISS AMBI FWHM END 0.46
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5299