Exposure
ID
GRAVI.2025-06-11T03:05:12.140_1
Header ID
GRAVI.2025-06-11T03:05:12.140
Date updated
2025-06-11 03:20:35 UTC+0000
Release date
2026-06-11 03:20:35 UTC+0000
UTC Start
2025-06-11 03:05:12.140
UTC End
2025-06-11 03:11:52.140
MJD Start
60837.12861273
MJD End
60837.133242359625
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.008132499999999999
Ambient temperature (°C)
13.35
Seeing (arcsec)
0.38
Observation
ID
68027
Category
science
Program ID
115.287G.001
Program Title
MONITORING A TRIPLE SYSTEM WITH A MAIN SEQUENCE INNER BINARY AND A PRE-MAIN-SEQUENCE TERTIARY
Program Type
Normal
PI / COI
FROST / SANA / BORDIER
Target
ID
50570
Name
Cl_NGC_6618_CEN_1a
RA
275.126159
DEC
-16.17855
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 53.6110 53.6680 5.9000 6.9000
U1-U3 94.9510 95.1820 11.5000 12.7000
U1-U4 107.7010 109.0730 40.3410 41.6570
U2-U3 41.9390 42.1330 18.8000 20.0000
U2-U4 70.3960 71.8350 65.8900 66.8790
U3-U4 51.9180 52.8810 102.1800 102.4320
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.287G.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60837.12861273
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME NGC 6618 341B
HIERARCH ESO INS SOBJ NAME Cl_NGC_6618_CEN_1a
RA 275.126159
DEC -16.17855
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
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 414.0
HIERARCH ESO DET2 SEQ1 DIT 100.0
HIERARCH ESO DET2 NDIT 4
HIERARCH ESO ISS PBL12 START 53.611
HIERARCH ESO ISS PBL12 END 53.668
HIERARCH ESO ISS PBLA12 START 5.9
HIERARCH ESO ISS PBLA12 END 6.9
HIERARCH ESO ISS PBL13 START 94.951
HIERARCH ESO ISS PBL13 END 95.182
HIERARCH ESO ISS PBLA13 START 11.5
HIERARCH ESO ISS PBLA13 END 12.7
HIERARCH ESO ISS PBL14 START 107.701
HIERARCH ESO ISS PBL14 END 109.073
HIERARCH ESO ISS PBLA14 START 40.341
HIERARCH ESO ISS PBLA14 END 41.657
HIERARCH ESO ISS PBL23 START 41.939
HIERARCH ESO ISS PBL23 END 42.133
HIERARCH ESO ISS PBLA23 START 18.8
HIERARCH ESO ISS PBLA23 END 20.0
HIERARCH ESO ISS PBL24 START 70.396
HIERARCH ESO ISS PBL24 END 71.835
HIERARCH ESO ISS PBLA24 START 65.89
HIERARCH ESO ISS PBLA24 END 66.879
HIERARCH ESO ISS PBL34 START 51.918
HIERARCH ESO ISS PBL34 END 52.881
HIERARCH ESO ISS PBLA34 START 102.18
HIERARCH ESO ISS PBLA34 END 102.432
HIERARCH ESO ISS AMBI TAU0 START 0.008731
HIERARCH ESO ISS AMBI TAU0 END 0.007534
HIERARCH ESO ISS AMBI TEMP 13.35
HIERARCH ESO ISS AMBI FWHM START 0.34
HIERARCH ESO ISS AMBI FWHM END 0.42