Exposure
ID
GRAVI.2024-07-18T04:16:24.650_1
Header ID
GRAVI.2024-07-18T04:16:24.650
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 04:16:24.650
UTC End
2024-07-18 04:22:24.650
MJD Start
60509.17806308
MJD End
60509.1822297467
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.007622
Ambient temperature (°C)
16.27
Seeing (arcsec)
0.5
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 54.7970 54.5940 34.7000 35.2000
U1-U3 98.4720 98.0000 41.0000 41.5000
U1-U4 121.7780 120.6730 70.1880 70.7870
U2-U3 44.4250 44.1520 48.9000 49.3000
U2-U4 83.4750 82.6590 92.5980 93.4120
U3-U4 59.8580 59.4800 123.4670 124.4960
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 60509.17806308
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 54.797
HIERARCH ESO ISS PBL12 END 54.594
HIERARCH ESO ISS PBLA12 START 34.7
HIERARCH ESO ISS PBLA12 END 35.2
HIERARCH ESO ISS PBL13 START 98.472
HIERARCH ESO ISS PBL13 END 98.0
HIERARCH ESO ISS PBLA13 START 41.0
HIERARCH ESO ISS PBLA13 END 41.5
HIERARCH ESO ISS PBL14 START 121.778
HIERARCH ESO ISS PBL14 END 120.673
HIERARCH ESO ISS PBLA14 START 70.188
HIERARCH ESO ISS PBLA14 END 70.787
HIERARCH ESO ISS PBL23 START 44.425
HIERARCH ESO ISS PBL23 END 44.152
HIERARCH ESO ISS PBLA23 START 48.9
HIERARCH ESO ISS PBLA23 END 49.3
HIERARCH ESO ISS PBL24 START 83.475
HIERARCH ESO ISS PBL24 END 82.659
HIERARCH ESO ISS PBLA24 START 92.598
HIERARCH ESO ISS PBLA24 END 93.412
HIERARCH ESO ISS PBL34 START 59.858
HIERARCH ESO ISS PBL34 END 59.48
HIERARCH ESO ISS PBLA34 START 123.467
HIERARCH ESO ISS PBLA34 END 124.496
HIERARCH ESO ISS AMBI TAU0 START 0.007357
HIERARCH ESO ISS AMBI TAU0 END 0.007887
HIERARCH ESO ISS AMBI TEMP 16.27
HIERARCH ESO ISS AMBI FWHM START 0.45
HIERARCH ESO ISS AMBI FWHM END 0.55
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.1000
HIERARCH ESO FT ROBJ DELTA -290027.6541