Exposure
ID
GRAVI.2024-07-18T04:53:18.744_1
Header ID
GRAVI.2024-07-18T04:53:18.744
Date updated
2024-07-18 08:50:34 UTC+0000
Release date
2025-07-18 08:50:31 UTC+0000
UTC Start
2024-07-18 04:53:18.744
UTC End
2024-07-18 04:59:18.744
MJD Start
60509.20368917
MJD End
60509.2078558367
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.007685
Ambient temperature (°C)
15.64
Seeing (arcsec)
0.62
Observation
ID
60146
Category
science
Program ID
113.268P.004
Program Title
THE GALACTIC CENTER WITH GRAVITY - MEASURING THE SPIN OF SGR A* BY MEANS OF DEEP GRAVITY INTERFEROMETRY
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 / LE BOUQUIN / KREIDBERG /
Target
ID
44649
Name
SGRA
RA
266.416896
DEC
-29.00733
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 53.4470 53.1640 37.2000 37.6000
U1-U3 95.3500 94.6980 43.5000 43.9000
U1-U4 114.5160 113.0160 73.5300 74.0950
U2-U3 42.6270 42.2530 51.4000 51.8000
U2-U4 78.1530 77.0670 97.4240 98.3190
U3-U4 57.4490 56.9780 129.7080 130.8930
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 113.268P.004
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60509.20368917
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME SGRA
RA 266.416896
DEC -29.00733
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 53.447
HIERARCH ESO ISS PBL12 END 53.164
HIERARCH ESO ISS PBLA12 START 37.2
HIERARCH ESO ISS PBLA12 END 37.6
HIERARCH ESO ISS PBL13 START 95.35
HIERARCH ESO ISS PBL13 END 94.698
HIERARCH ESO ISS PBLA13 START 43.5
HIERARCH ESO ISS PBLA13 END 43.9
HIERARCH ESO ISS PBL14 START 114.516
HIERARCH ESO ISS PBL14 END 113.016
HIERARCH ESO ISS PBLA14 START 73.53
HIERARCH ESO ISS PBLA14 END 74.095
HIERARCH ESO ISS PBL23 START 42.627
HIERARCH ESO ISS PBL23 END 42.253
HIERARCH ESO ISS PBLA23 START 51.4
HIERARCH ESO ISS PBLA23 END 51.8
HIERARCH ESO ISS PBL24 START 78.153
HIERARCH ESO ISS PBL24 END 77.067
HIERARCH ESO ISS PBLA24 START 97.424
HIERARCH ESO ISS PBLA24 END 98.319
HIERARCH ESO ISS PBL34 START 57.449
HIERARCH ESO ISS PBL34 END 56.978
HIERARCH ESO ISS PBLA34 START 129.708
HIERARCH ESO ISS PBLA34 END 130.893
HIERARCH ESO ISS AMBI TAU0 START 0.007685
HIERARCH ESO ISS AMBI TAU0 END 0.007685
HIERARCH ESO ISS AMBI TEMP 15.64
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.62
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1000
HIERARCH ESO FT ROBJ DELTA -290027.6541