Exposure
ID
GRAVI.2025-05-14T08:32:46.901_1
Header ID
GRAVI.2025-05-14T08:32:46.901
Date updated
2025-05-14 08:50:47 UTC+0000
Release date
2026-05-14 08:50:47 UTC+0000
UTC Start
2025-05-14 08:32:46.901
UTC End
2025-05-14 08:39:26.901
MJD Start
60809.35609839
MJD End
60809.36072801963
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.006437
Ambient temperature (°C)
16.3
Seeing (arcsec)
0.605
Observation
ID
67420
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
50153
Name
Cl_NGC_6618_CEN_1a
RA
275.125773
DEC
-16.17889
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 56.5540 56.5600 31.3000 31.8000
U1-U3 102.4200 102.3740 37.4000 37.8000
U1-U4 128.8360 128.2970 64.5360 64.9050
U2-U3 46.5740 46.5130 44.8000 45.2000
U2-U4 87.2420 86.6380 85.3590 85.8100
U3-U4 60.0700 59.6030 115.6470 116.3470
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 60809.35609839
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 275.125773
DEC -16.17889
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 56.554
HIERARCH ESO ISS PBL12 END 56.56
HIERARCH ESO ISS PBLA12 START 31.3
HIERARCH ESO ISS PBLA12 END 31.8
HIERARCH ESO ISS PBL13 START 102.42
HIERARCH ESO ISS PBL13 END 102.374
HIERARCH ESO ISS PBLA13 START 37.4
HIERARCH ESO ISS PBLA13 END 37.8
HIERARCH ESO ISS PBL14 START 128.836
HIERARCH ESO ISS PBL14 END 128.297
HIERARCH ESO ISS PBLA14 START 64.536
HIERARCH ESO ISS PBLA14 END 64.905
HIERARCH ESO ISS PBL23 START 46.574
HIERARCH ESO ISS PBL23 END 46.513
HIERARCH ESO ISS PBLA23 START 44.8
HIERARCH ESO ISS PBLA23 END 45.2
HIERARCH ESO ISS PBL24 START 87.242
HIERARCH ESO ISS PBL24 END 86.638
HIERARCH ESO ISS PBLA24 START 85.359
HIERARCH ESO ISS PBLA24 END 85.81
HIERARCH ESO ISS PBL34 START 60.07
HIERARCH ESO ISS PBL34 END 59.603
HIERARCH ESO ISS PBLA34 START 115.647
HIERARCH ESO ISS PBLA34 END 116.347
HIERARCH ESO ISS AMBI TAU0 START 0.007416
HIERARCH ESO ISS AMBI TAU0 END 0.005458
HIERARCH ESO ISS AMBI TEMP 16.3
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.66