Exposure
ID
GRAVI.2024-03-26T09:53:12.788_1
Header ID
GRAVI.2024-03-26T09:53:12.788
Date updated
2024-03-26 10:05:41 UTC+0000
Release date
2025-03-26 10:05:41 UTC+0000
UTC Start
2024-03-26 09:53:12.788
UTC End
2024-03-26 09:59:12.788
MJD Start
60395.41195357
MJD End
60395.4161202367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009327
Ambient temperature (°C)
14.3
Seeing (arcsec)
0.63
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 56.5160 56.4900 24.1000 24.8000
U1-U3 102.3930 102.3480 30.4000 31.1000
U1-U4 130.1780 130.2100 58.2650 59.0560
U2-U3 46.6360 46.6200 38.0000 38.8000
U2-U4 89.2830 89.3810 79.1120 79.9050
U3-U4 62.2030 62.3210 108.6290 109.3730
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 60395.41195357
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 56.516
HIERARCH ESO ISS PBL12 END 56.49
HIERARCH ESO ISS PBLA12 START 24.1
HIERARCH ESO ISS PBLA12 END 24.8
HIERARCH ESO ISS PBL13 START 102.393
HIERARCH ESO ISS PBL13 END 102.348
HIERARCH ESO ISS PBLA13 START 30.4
HIERARCH ESO ISS PBLA13 END 31.1
HIERARCH ESO ISS PBL14 START 130.178
HIERARCH ESO ISS PBL14 END 130.21
HIERARCH ESO ISS PBLA14 START 58.265
HIERARCH ESO ISS PBLA14 END 59.056
HIERARCH ESO ISS PBL23 START 46.636
HIERARCH ESO ISS PBL23 END 46.62
HIERARCH ESO ISS PBLA23 START 38.0
HIERARCH ESO ISS PBLA23 END 38.8
HIERARCH ESO ISS PBL24 START 89.283
HIERARCH ESO ISS PBL24 END 89.381
HIERARCH ESO ISS PBLA24 START 79.112
HIERARCH ESO ISS PBLA24 END 79.905
HIERARCH ESO ISS PBL34 START 62.203
HIERARCH ESO ISS PBL34 END 62.321
HIERARCH ESO ISS PBLA34 START 108.629
HIERARCH ESO ISS PBLA34 END 109.373
HIERARCH ESO ISS AMBI TAU0 START 0.008487
HIERARCH ESO ISS AMBI TAU0 END 0.010167
HIERARCH ESO ISS AMBI TEMP 14.3
HIERARCH ESO ISS AMBI FWHM START 0.61
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