Exposure
ID
GRAVI.2024-03-26T09:37:06.747_1
Header ID
GRAVI.2024-03-26T09:37:06.747
Date updated
2024-03-26 09:50:34 UTC+0000
Release date
2025-03-26 09:50:34 UTC+0000
UTC Start
2024-03-26 09:37:06.747
UTC End
2024-03-26 09:43:06.747
MJD Start
60395.40077254
MJD End
60395.4049392067
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0092515
Ambient temperature (°C)
14.39
Seeing (arcsec)
0.67
Observation
ID
58831
Category
science
Program ID
112.25CV.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/ WIDMANN/ DRESCHER/ RIBEIRO/ SADUN BORDONI/ STRAUBMEIER/ BRANDNER/ PERRIN/ ROUSSELET-PERRAUT/ GARCIA/ MANG/ PAUMARD/ ECKART/ VINCENT/ BOURDAROT/ LUTZ/ STURM/ CAO/ HORROBIN/ DE ZEEUW
Target
ID
43559
Name
S4
RA
266.416828
DEC
-29.00732
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 56.5530 56.5430 22.2000 23.0000
U1-U3 102.4340 102.4290 28.5000 29.2000
U1-U4 129.8550 130.0250 56.2260 57.0560
U2-U3 46.6290 46.6400 36.1000 36.9000
U2-U4 88.8150 89.0410 77.1010 77.9130
U3-U4 61.7580 61.9620 106.8130 107.5340
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 112.25CV.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60395.40077254
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME S4
RA 266.416828
DEC -29.00732
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 389.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 12
HIERARCH ESO ISS PBL12 START 56.553
HIERARCH ESO ISS PBL12 END 56.543
HIERARCH ESO ISS PBLA12 START 22.2
HIERARCH ESO ISS PBLA12 END 23.0
HIERARCH ESO ISS PBL13 START 102.434
HIERARCH ESO ISS PBL13 END 102.429
HIERARCH ESO ISS PBLA13 START 28.5
HIERARCH ESO ISS PBLA13 END 29.2
HIERARCH ESO ISS PBL14 START 129.855
HIERARCH ESO ISS PBL14 END 130.025
HIERARCH ESO ISS PBLA14 START 56.226
HIERARCH ESO ISS PBLA14 END 57.056
HIERARCH ESO ISS PBL23 START 46.629
HIERARCH ESO ISS PBL23 END 46.64
HIERARCH ESO ISS PBLA23 START 36.1
HIERARCH ESO ISS PBLA23 END 36.9
HIERARCH ESO ISS PBL24 START 88.815
HIERARCH ESO ISS PBL24 END 89.041
HIERARCH ESO ISS PBLA24 START 77.101
HIERARCH ESO ISS PBLA24 END 77.913
HIERARCH ESO ISS PBL34 START 61.758
HIERARCH ESO ISS PBL34 END 61.962
HIERARCH ESO ISS PBLA34 START 106.813
HIERARCH ESO ISS PBLA34 END 107.534
HIERARCH ESO ISS AMBI TAU0 START 0.009321
HIERARCH ESO ISS AMBI TAU0 END 0.009182
HIERARCH ESO ISS AMBI TEMP 14.39
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.65
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1000
HIERARCH ESO FT ROBJ DELTA -290027.6541