Exposure
ID
GRAVI.2022-04-26T07:31:59.017_1
Header ID
GRAVI.2022-04-26T07:31:59.017
Date updated
2022-04-26 07:50:49 UTC+0000
Release date
2023-04-26 07:50:49 UTC+0000
UTC Start
2022-04-26 07:31:59.017
UTC End
2022-04-26 07:37:19.017
MJD Start
59695.31387751
MJD End
59695.3175812137
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.003134
Ambient temperature (°C)
10.95
Seeing (arcsec)
1.21
Observation
ID
50602
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
37791
Name
S2
RA
266.416815
DEC
-29.00698
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 56.5580 56.5530 21.6000 22.3000
U1-U3 102.4280 102.4340 27.8000 28.5000
U1-U4 129.6790 129.8700 55.5520 56.3020
U2-U3 46.6140 46.6300 35.4000 36.1000
U2-U4 88.5960 88.8350 76.4460 77.1760
U3-U4 61.5680 61.7750 106.2440 106.8800
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 59695.31387751
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416815
DEC -29.00698
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 56.558
HIERARCH ESO ISS PBL12 END 56.553
HIERARCH ESO ISS PBLA12 START 21.6
HIERARCH ESO ISS PBLA12 END 22.3
HIERARCH ESO ISS PBL13 START 102.428
HIERARCH ESO ISS PBL13 END 102.434
HIERARCH ESO ISS PBLA13 START 27.8
HIERARCH ESO ISS PBLA13 END 28.5
HIERARCH ESO ISS PBL14 START 129.679
HIERARCH ESO ISS PBL14 END 129.87
HIERARCH ESO ISS PBLA14 START 55.552
HIERARCH ESO ISS PBLA14 END 56.302
HIERARCH ESO ISS PBL23 START 46.614
HIERARCH ESO ISS PBL23 END 46.63
HIERARCH ESO ISS PBLA23 START 35.4
HIERARCH ESO ISS PBLA23 END 36.1
HIERARCH ESO ISS PBL24 START 88.596
HIERARCH ESO ISS PBL24 END 88.835
HIERARCH ESO ISS PBLA24 START 76.446
HIERARCH ESO ISS PBLA24 END 77.176
HIERARCH ESO ISS PBL34 START 61.568
HIERARCH ESO ISS PBL34 END 61.775
HIERARCH ESO ISS PBLA34 START 106.244
HIERARCH ESO ISS PBLA34 END 106.88
HIERARCH ESO ISS AMBI TAU0 START 0.003134
HIERARCH ESO ISS AMBI TAU0 END 0.003134
HIERARCH ESO ISS AMBI TEMP 10.95
HIERARCH ESO ISS AMBI FWHM START 1.21
HIERARCH ESO ISS AMBI FWHM END 1.21
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5310