Exposure
ID
GRAVI.2022-04-24T09:50:44.589_1
Header ID
GRAVI.2022-04-24T09:50:44.589
Date updated
2022-04-24 10:11:17 UTC+0000
Release date
2023-04-24 10:11:17 UTC+0000
UTC Start
2022-04-24 09:50:44.589
UTC End
2022-04-24 09:56:04.589
MJD Start
59693.4102383
MJD End
59693.4139420037
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0021285
Ambient temperature (°C)
10.18
Seeing (arcsec)
1.315
Observation
ID
50592
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
37785
Name
S2
RA
266.416938
DEC
-29.00708
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 54.8500 54.6750 34.6000 35.0000
U1-U3 98.5940 98.1880 40.9000 41.3000
U1-U4 122.0620 121.1110 70.0260 70.5550
U2-U3 44.4950 44.2610 48.7000 49.2000
U2-U4 83.6840 82.9820 92.3820 93.0940
U3-U4 59.9550 59.6280 123.1960 124.0930
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 59693.4102383
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S2
RA 266.416938
DEC -29.00708
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 54.85
HIERARCH ESO ISS PBL12 END 54.675
HIERARCH ESO ISS PBLA12 START 34.6
HIERARCH ESO ISS PBLA12 END 35.0
HIERARCH ESO ISS PBL13 START 98.594
HIERARCH ESO ISS PBL13 END 98.188
HIERARCH ESO ISS PBLA13 START 40.9
HIERARCH ESO ISS PBLA13 END 41.3
HIERARCH ESO ISS PBL14 START 122.062
HIERARCH ESO ISS PBL14 END 121.111
HIERARCH ESO ISS PBLA14 START 70.026
HIERARCH ESO ISS PBLA14 END 70.555
HIERARCH ESO ISS PBL23 START 44.495
HIERARCH ESO ISS PBL23 END 44.261
HIERARCH ESO ISS PBLA23 START 48.7
HIERARCH ESO ISS PBLA23 END 49.2
HIERARCH ESO ISS PBL24 START 83.684
HIERARCH ESO ISS PBL24 END 82.982
HIERARCH ESO ISS PBLA24 START 92.382
HIERARCH ESO ISS PBLA24 END 93.094
HIERARCH ESO ISS PBL34 START 59.955
HIERARCH ESO ISS PBL34 END 59.628
HIERARCH ESO ISS PBLA34 START 123.196
HIERARCH ESO ISS PBLA34 END 124.093
HIERARCH ESO ISS AMBI TAU0 START 0.00194
HIERARCH ESO ISS AMBI TAU0 END 0.002317
HIERARCH ESO ISS AMBI TEMP 10.18
HIERARCH ESO ISS AMBI FWHM START 1.28
HIERARCH ESO ISS AMBI FWHM END 1.35
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1070
HIERARCH ESO FT ROBJ DELTA -290027.5310