Exposure
ID
GRAVI.2021-06-21T05:44:52.682_1
Header ID
GRAVI.2021-06-21T05:44:52.682
Date updated
2021-06-21 06:00:15 UTC+0000
Release date
2022-06-21 06:00:15 UTC+0000
UTC Start
2021-06-21 05:44:52.682
UTC End
2021-06-21 05:50:12.682
MJD Start
59386.23949864
MJD End
59386.2432023437
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0031665
Ambient temperature (°C)
8.48
Seeing (arcsec)
0.645
Observation
ID
47541
Category
science
Program ID
105.20B2.003
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
35654
Name
S2
RA
266.416967
DEC
-29.00737
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 55.3110 55.1640 33.2000 33.7000
U1-U3 99.6660 99.3240 39.6000 40.0000
U1-U4 124.5720 123.7710 68.4170 68.9700
U2-U3 45.1150 44.9170 47.4000 47.9000
U2-U4 85.5420 84.9490 90.3010 91.0020
U3-U4 60.8250 60.5470 120.6310 121.4860
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 105.20B2.003
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59386.23949864
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416967
DEC -29.00737
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 55.311
HIERARCH ESO ISS PBL12 END 55.164
HIERARCH ESO ISS PBLA12 START 33.2
HIERARCH ESO ISS PBLA12 END 33.7
HIERARCH ESO ISS PBL13 START 99.666
HIERARCH ESO ISS PBL13 END 99.324
HIERARCH ESO ISS PBLA13 START 39.6
HIERARCH ESO ISS PBLA13 END 40.0
HIERARCH ESO ISS PBL14 START 124.572
HIERARCH ESO ISS PBL14 END 123.771
HIERARCH ESO ISS PBLA14 START 68.417
HIERARCH ESO ISS PBLA14 END 68.97
HIERARCH ESO ISS PBL23 START 45.115
HIERARCH ESO ISS PBL23 END 44.917
HIERARCH ESO ISS PBLA23 START 47.4
HIERARCH ESO ISS PBLA23 END 47.9
HIERARCH ESO ISS PBL24 START 85.542
HIERARCH ESO ISS PBL24 END 84.949
HIERARCH ESO ISS PBLA24 START 90.301
HIERARCH ESO ISS PBLA24 END 91.002
HIERARCH ESO ISS PBL34 START 60.825
HIERARCH ESO ISS PBL34 END 60.547
HIERARCH ESO ISS PBLA34 START 120.631
HIERARCH ESO ISS PBLA34 END 121.486
HIERARCH ESO ISS AMBI TAU0 START 0.003385
HIERARCH ESO ISS AMBI TAU0 END 0.002948
HIERARCH ESO ISS AMBI TEMP 8.48
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.65
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1080
HIERARCH ESO FT ROBJ DELTA -290027.5371