Exposure
ID
GRAVI.2025-06-09T06:41:15.306_1
Header ID
GRAVI.2025-06-09T06:41:15.306
Date updated
2025-06-09 06:55:41 UTC+0000
Release date
2026-06-09 06:55:41 UTC+0000
UTC Start
2025-06-09 06:41:15.306
UTC End
2025-06-09 06:47:55.306
MJD Start
60835.27864937
MJD End
60835.283278999625
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0060875
Ambient temperature (°C)
13.66
Seeing (arcsec)
0.345
Observation
ID
67853
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
50453
Name
Cl_NGC_6618_CEN_1a
RA
275.126173
DEC
-16.17883
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 56.5270 56.5490 30.6000 31.1000
U1-U3 102.4320 102.4290 36.7000 37.2000
U1-U4 129.4200 129.0040 64.0120 64.4020
U2-U3 46.6250 46.5910 44.2000 44.6000
U2-U4 87.9400 87.4370 84.7500 85.2000
U3-U4 60.6380 60.2250 114.7440 115.4070
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 60835.27864937
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 275.126173
DEC -16.17883
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 56.527
HIERARCH ESO ISS PBL12 END 56.549
HIERARCH ESO ISS PBLA12 START 30.6
HIERARCH ESO ISS PBLA12 END 31.1
HIERARCH ESO ISS PBL13 START 102.432
HIERARCH ESO ISS PBL13 END 102.429
HIERARCH ESO ISS PBLA13 START 36.7
HIERARCH ESO ISS PBLA13 END 37.2
HIERARCH ESO ISS PBL14 START 129.42
HIERARCH ESO ISS PBL14 END 129.004
HIERARCH ESO ISS PBLA14 START 64.012
HIERARCH ESO ISS PBLA14 END 64.402
HIERARCH ESO ISS PBL23 START 46.625
HIERARCH ESO ISS PBL23 END 46.591
HIERARCH ESO ISS PBLA23 START 44.2
HIERARCH ESO ISS PBLA23 END 44.6
HIERARCH ESO ISS PBL24 START 87.94
HIERARCH ESO ISS PBL24 END 87.437
HIERARCH ESO ISS PBLA24 START 84.75
HIERARCH ESO ISS PBLA24 END 85.2
HIERARCH ESO ISS PBL34 START 60.638
HIERARCH ESO ISS PBL34 END 60.225
HIERARCH ESO ISS PBLA34 START 114.744
HIERARCH ESO ISS PBLA34 END 115.407
HIERARCH ESO ISS AMBI TAU0 START 0.006316
HIERARCH ESO ISS AMBI TAU0 END 0.005859
HIERARCH ESO ISS AMBI TEMP 13.66
HIERARCH ESO ISS AMBI FWHM START 0.33
HIERARCH ESO ISS AMBI FWHM END 0.36