Exposure
ID
GRAVI.2025-05-14T08:39:58.920_1
Header ID
GRAVI.2025-05-14T08:39:58.920
Date updated
2025-05-14 08:55:38 UTC+0000
Release date
2026-05-14 08:55:37 UTC+0000
UTC Start
2025-05-14 08:39:58.920
UTC End
2025-05-14 08:46:38.920
MJD Start
60809.36109861
MJD End
60809.36572823963
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.0054824999999999995
Ambient temperature (°C)
16.45
Seeing (arcsec)
0.64
Observation
ID
67421
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
50154
Name
Cl_NGC_6618_CEN_1a
RA
275.125791
DEC
-16.17888
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 56.5590 56.5510 31.8000 32.3000
U1-U3 102.3710 102.2900 37.8000 38.3000
U1-U4 128.2720 127.6390 64.9200 65.2710
U2-U3 46.5100 46.4280 45.2000 45.6000
U2-U4 86.6100 85.9290 85.8300 86.2800
U3-U4 59.5810 59.0750 116.3780 117.1060
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 60809.36109861
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 275.125791
DEC -16.17888
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 56.559
HIERARCH ESO ISS PBL12 END 56.551
HIERARCH ESO ISS PBLA12 START 31.8
HIERARCH ESO ISS PBLA12 END 32.3
HIERARCH ESO ISS PBL13 START 102.371
HIERARCH ESO ISS PBL13 END 102.29
HIERARCH ESO ISS PBLA13 START 37.8
HIERARCH ESO ISS PBLA13 END 38.3
HIERARCH ESO ISS PBL14 START 128.272
HIERARCH ESO ISS PBL14 END 127.639
HIERARCH ESO ISS PBLA14 START 64.92
HIERARCH ESO ISS PBLA14 END 65.271
HIERARCH ESO ISS PBL23 START 46.51
HIERARCH ESO ISS PBL23 END 46.428
HIERARCH ESO ISS PBLA23 START 45.2
HIERARCH ESO ISS PBLA23 END 45.6
HIERARCH ESO ISS PBL24 START 86.61
HIERARCH ESO ISS PBL24 END 85.929
HIERARCH ESO ISS PBLA24 START 85.83
HIERARCH ESO ISS PBLA24 END 86.28
HIERARCH ESO ISS PBL34 START 59.581
HIERARCH ESO ISS PBL34 END 59.075
HIERARCH ESO ISS PBLA34 START 116.378
HIERARCH ESO ISS PBLA34 END 117.106
HIERARCH ESO ISS AMBI TAU0 START 0.005458
HIERARCH ESO ISS AMBI TAU0 END 0.005507
HIERARCH ESO ISS AMBI TEMP 16.45
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.62