Exposure
ID
GRAVI.2022-06-20T05:47:59.900_1
Header ID
GRAVI.2022-06-20T05:47:59.900
Date updated
2022-06-20 13:30:54 UTC+0000
Release date
2023-06-20 13:30:53 UTC+0000
UTC Start
2022-06-20 05:47:59.900
UTC End
2022-06-20 05:53:19.900
MJD Start
59750.24166551
MJD End
59750.2453692137
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.001506
Ambient temperature (°C)
8.72
Seeing (arcsec)
1.32
Observation
ID
51283
Category
science
Program ID
109.22ZA.003
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
38218
Name
S2
RA
266.416937
DEC
-29.0072
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 55.3550 55.2120 33.1000 33.5000
U1-U3 99.7700 99.4370 39.4000 39.9000
U1-U4 124.8150 124.0360 68.2400 68.7920
U2-U3 45.1750 44.9830 47.2000 47.7000
U2-U4 85.7210 85.1450 90.0800 90.7750
U3-U4 60.9100 60.6390 120.3630 121.2080
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 109.22ZA.003
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 59750.24166551
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416937
DEC -29.0072
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 55.355
HIERARCH ESO ISS PBL12 END 55.212
HIERARCH ESO ISS PBLA12 START 33.1
HIERARCH ESO ISS PBLA12 END 33.5
HIERARCH ESO ISS PBL13 START 99.77
HIERARCH ESO ISS PBL13 END 99.437
HIERARCH ESO ISS PBLA13 START 39.4
HIERARCH ESO ISS PBLA13 END 39.9
HIERARCH ESO ISS PBL14 START 124.815
HIERARCH ESO ISS PBL14 END 124.036
HIERARCH ESO ISS PBLA14 START 68.24
HIERARCH ESO ISS PBLA14 END 68.792
HIERARCH ESO ISS PBL23 START 45.175
HIERARCH ESO ISS PBL23 END 44.983
HIERARCH ESO ISS PBLA23 START 47.2
HIERARCH ESO ISS PBLA23 END 47.7
HIERARCH ESO ISS PBL24 START 85.721
HIERARCH ESO ISS PBL24 END 85.145
HIERARCH ESO ISS PBLA24 START 90.08
HIERARCH ESO ISS PBLA24 END 90.775
HIERARCH ESO ISS PBL34 START 60.91
HIERARCH ESO ISS PBL34 END 60.639
HIERARCH ESO ISS PBLA34 START 120.363
HIERARCH ESO ISS PBLA34 END 121.208
HIERARCH ESO ISS AMBI TAU0 START 0.001506
HIERARCH ESO ISS AMBI TAU0 END 0.001506
HIERARCH ESO ISS AMBI TEMP 8.72
HIERARCH ESO ISS AMBI FWHM START 1.34
HIERARCH ESO ISS AMBI FWHM END 1.3
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5299