Exposure
ID
GRAVI.2025-01-07T05:29:54.433_1
Header ID
GRAVI.2025-01-07T05:29:54.433
Date updated
2025-01-07 05:45:43 UTC+0000
Release date
2026-01-07 05:45:43 UTC+0000
UTC Start
2025-01-07 05:29:54.433
UTC End
2025-01-07 05:35:54.433
MJD Start
60682.22910223
MJD End
60682.23326889666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009142
Ambient temperature (°C)
15.29
Seeing (arcsec)
0.755
Observation
ID
63108
Category
science
Program ID
114.27PY.001
Program Title
IS THE STELLAR QUADRUPLE HD 74438 A CANDIDATE PROGENITOR OF SN IA?
Program Type
Normal
PI / COI
MERLE / JORISSEN / LIBERT / MÉRAND / PALADINI / VAN ECK
Target
ID
47018
Name
HD_74438
RA
130.442079
DEC
-53.06241
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 42.6550 42.8900 142.0000 142.8000
A0-J2 127.9020 128.1910 83.2000 84.5000
A0-J6 156.8950 156.4710 22.5970 23.5030
B5-J2 111.8820 111.7960 64.2000 65.5000
B5-J6 181.6690 181.3840 10.7930 11.6080
J2-J6 145.9360 146.5550 332.7930 333.5830
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 114.27PY.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60682.22910223
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 74438
HIERARCH ESO INS SOBJ NAME HD_74438
RA 130.442079
DEC -53.06241
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 379.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 36
HIERARCH ESO ISS PBL12 START 42.655
HIERARCH ESO ISS PBL12 END 42.89
HIERARCH ESO ISS PBLA12 START 142.0
HIERARCH ESO ISS PBLA12 END 142.8
HIERARCH ESO ISS PBL13 START 127.902
HIERARCH ESO ISS PBL13 END 128.191
HIERARCH ESO ISS PBLA13 START 83.2
HIERARCH ESO ISS PBLA13 END 84.5
HIERARCH ESO ISS PBL14 START 156.895
HIERARCH ESO ISS PBL14 END 156.471
HIERARCH ESO ISS PBLA14 START 22.597
HIERARCH ESO ISS PBLA14 END 23.503
HIERARCH ESO ISS PBL23 START 111.882
HIERARCH ESO ISS PBL23 END 111.796
HIERARCH ESO ISS PBLA23 START 64.2
HIERARCH ESO ISS PBLA23 END 65.5
HIERARCH ESO ISS PBL24 START 181.669
HIERARCH ESO ISS PBL24 END 181.384
HIERARCH ESO ISS PBLA24 START 10.793
HIERARCH ESO ISS PBLA24 END 11.608
HIERARCH ESO ISS PBL34 START 145.936
HIERARCH ESO ISS PBL34 END 146.555
HIERARCH ESO ISS PBLA34 START 332.793
HIERARCH ESO ISS PBLA34 END 333.583
HIERARCH ESO ISS AMBI TAU0 START 0.009116
HIERARCH ESO ISS AMBI TAU0 END 0.009168
HIERARCH ESO ISS AMBI TEMP 15.29
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.73