Exposure
ID
GRAVI.2021-05-25T07:55:15.160_1
Header ID
GRAVI.2021-05-25T07:55:15.160
Date updated
2021-05-25 08:10:25 UTC+0000
Release date
2022-05-25 08:10:25 UTC+0000
UTC Start
2021-05-25 07:55:15.160
UTC End
2021-05-25 08:00:35.160
MJD Start
59359.33003657
MJD End
59359.3337402737
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0040135
Ambient temperature (°C)
12.37
Seeing (arcsec)
0.625
Observation
ID
47464
Category
science
Program ID
105.20B2.002
Program Title
THE GALACTIC CENTER AT UNPRECEDENTED RESOLUTION - PROBING GENERAL RELATIVITY WITH GRAVITY
Program Type
GTO
PI / COI
EISENHAUER/ GILLESSEN/ PERRIN/ STRAUBMEIER/ ROUSSELET-PERRAUT/ GARCIA/ BRANDNER/ GENZEL/ ECKART/ PAUMARD/ CL'ENET/ GAO/ HABIBI/ HORROBIN/ KERVELLA/ OTT/ WIDMANN/ VON FELLENBERG/ HENNING/ PFUHL/ WAISBERG/ DEXTER/ DE ZEEUW/ AMORIM
Target
ID
35600
Name
S2
RA
266.417087
DEC
-29.00718
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 54.6210 54.4300 35.1000 35.5000
U1-U3 98.0620 97.6200 41.4000 41.8000
U1-U4 120.8160 119.7840 70.7100 71.2380
U2-U3 44.1880 43.9330 49.3000 49.7000
U2-U4 82.7640 82.0030 93.3070 94.0380
U3-U4 59.5280 59.1770 124.3640 125.2970
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 105.20B2.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59359.33003657
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.417087
DEC -29.00718
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 54.621
HIERARCH ESO ISS PBL12 END 54.43
HIERARCH ESO ISS PBLA12 START 35.1
HIERARCH ESO ISS PBLA12 END 35.5
HIERARCH ESO ISS PBL13 START 98.062
HIERARCH ESO ISS PBL13 END 97.62
HIERARCH ESO ISS PBLA13 START 41.4
HIERARCH ESO ISS PBLA13 END 41.8
HIERARCH ESO ISS PBL14 START 120.816
HIERARCH ESO ISS PBL14 END 119.784
HIERARCH ESO ISS PBLA14 START 70.71
HIERARCH ESO ISS PBLA14 END 71.238
HIERARCH ESO ISS PBL23 START 44.188
HIERARCH ESO ISS PBL23 END 43.933
HIERARCH ESO ISS PBLA23 START 49.3
HIERARCH ESO ISS PBLA23 END 49.7
HIERARCH ESO ISS PBL24 START 82.764
HIERARCH ESO ISS PBL24 END 82.003
HIERARCH ESO ISS PBLA24 START 93.307
HIERARCH ESO ISS PBLA24 END 94.038
HIERARCH ESO ISS PBL34 START 59.528
HIERARCH ESO ISS PBL34 END 59.177
HIERARCH ESO ISS PBLA34 START 124.364
HIERARCH ESO ISS PBLA34 END 125.297
HIERARCH ESO ISS AMBI TAU0 START 0.004395
HIERARCH ESO ISS AMBI TAU0 END 0.003632
HIERARCH ESO ISS AMBI TEMP 12.37
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.59
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5371