Exposure
ID
GRAVI.2024-07-25T03:09:00.952_1
Header ID
GRAVI.2024-07-25T03:09:00.952
Date updated
2024-07-25 03:20:33 UTC+0000
Release date
2025-07-25 03:20:33 UTC+0000
UTC Start
2024-07-25 03:09:00.952
UTC End
2024-07-25 03:11:00.952
MJD Start
60516.13126102
MJD End
60516.1326499089
Exposure time (s)
120.0
Validation level
1
Tau 0: Coherence time (s)
0.0029685
Ambient temperature (°C)
13.56
Seeing (arcsec)
0.88
Observation
ID
60177
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
44680
Name
IRS16SW
RA
266.417168
DEC
-29.00737
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 55.7720 55.7300 31.4000 31.6000
U1-U3 100.7390 100.6410 37.8000 38.0000
U1-U4 127.0630 126.8400 66.3060 66.5290
U2-U3 45.7340 45.6780 45.5000 45.7000
U2-U4 87.3780 87.2150 87.7380 88.0010
U3-U4 61.6840 61.6080 117.6000 117.9040
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 60516.13126102
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME IRS16C
HIERARCH ESO INS SOBJ NAME IRS16SW
RA 266.417168
DEC -29.00737
HIERARCH ESO INS SPEC RES MEDIUM
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 135.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 4
HIERARCH ESO ISS PBL12 START 55.772
HIERARCH ESO ISS PBL12 END 55.73
HIERARCH ESO ISS PBLA12 START 31.4
HIERARCH ESO ISS PBLA12 END 31.6
HIERARCH ESO ISS PBL13 START 100.739
HIERARCH ESO ISS PBL13 END 100.641
HIERARCH ESO ISS PBLA13 START 37.8
HIERARCH ESO ISS PBLA13 END 38.0
HIERARCH ESO ISS PBL14 START 127.063
HIERARCH ESO ISS PBL14 END 126.84
HIERARCH ESO ISS PBLA14 START 66.306
HIERARCH ESO ISS PBLA14 END 66.529
HIERARCH ESO ISS PBL23 START 45.734
HIERARCH ESO ISS PBL23 END 45.678
HIERARCH ESO ISS PBLA23 START 45.5
HIERARCH ESO ISS PBLA23 END 45.7
HIERARCH ESO ISS PBL24 START 87.378
HIERARCH ESO ISS PBL24 END 87.215
HIERARCH ESO ISS PBLA24 START 87.738
HIERARCH ESO ISS PBLA24 END 88.001
HIERARCH ESO ISS PBL34 START 61.684
HIERARCH ESO ISS PBL34 END 61.608
HIERARCH ESO ISS PBLA34 START 117.6
HIERARCH ESO ISS PBLA34 END 117.904
HIERARCH ESO ISS AMBI TAU0 START 0.003116
HIERARCH ESO ISS AMBI TAU0 END 0.002821
HIERARCH ESO ISS AMBI TEMP 13.56
HIERARCH ESO ISS AMBI FWHM START 0.8
HIERARCH ESO ISS AMBI FWHM END 0.96
HIERARCH ESO FT ROBJ NAME IRS16C
HIERARCH ESO FT ROBJ ALPHA 174540.0999
HIERARCH ESO FT ROBJ DELTA -290027.6545