Exposure
ID
GRAVI.2022-04-24T07:19:02.207_1
Header ID
GRAVI.2022-04-24T07:19:02.207
Date updated
2022-04-24 07:35:40 UTC+0000
Release date
2023-04-24 07:35:40 UTC+0000
UTC Start
2022-04-24 07:19:02.207
UTC End
2022-04-24 07:24:22.207
MJD Start
59693.30488665
MJD End
59693.3085903537
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0037485
Ambient temperature (°C)
10.53
Seeing (arcsec)
0.705
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 56.5480 56.5550 19.0000 19.7000
U1-U3 102.3220 102.3630 25.2000 25.9000
U1-U4 128.6540 128.9840 52.6930 53.4970
U2-U3 46.4970 46.5370 32.7000 33.5000
U2-U4 87.4000 87.7780 73.7090 74.4730
U3-U4 60.5740 60.8830 103.9660 104.5860
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 59693.30488665
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 56.548
HIERARCH ESO ISS PBL12 END 56.555
HIERARCH ESO ISS PBLA12 START 19.0
HIERARCH ESO ISS PBLA12 END 19.7
HIERARCH ESO ISS PBL13 START 102.322
HIERARCH ESO ISS PBL13 END 102.363
HIERARCH ESO ISS PBLA13 START 25.2
HIERARCH ESO ISS PBLA13 END 25.9
HIERARCH ESO ISS PBL14 START 128.654
HIERARCH ESO ISS PBL14 END 128.984
HIERARCH ESO ISS PBLA14 START 52.693
HIERARCH ESO ISS PBLA14 END 53.497
HIERARCH ESO ISS PBL23 START 46.497
HIERARCH ESO ISS PBL23 END 46.537
HIERARCH ESO ISS PBLA23 START 32.7
HIERARCH ESO ISS PBLA23 END 33.5
HIERARCH ESO ISS PBL24 START 87.4
HIERARCH ESO ISS PBL24 END 87.778
HIERARCH ESO ISS PBLA24 START 73.709
HIERARCH ESO ISS PBLA24 END 74.473
HIERARCH ESO ISS PBL34 START 60.574
HIERARCH ESO ISS PBL34 END 60.883
HIERARCH ESO ISS PBLA34 START 103.966
HIERARCH ESO ISS PBLA34 END 104.586
HIERARCH ESO ISS AMBI TAU0 START 0.004159
HIERARCH ESO ISS AMBI TAU0 END 0.003338
HIERARCH ESO ISS AMBI TEMP 10.53
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.73
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5310