Exposure
ID
GRAVI.2025-01-07T05:23:15.416_1
Header ID
GRAVI.2025-01-07T05:23:15.416
Date updated
2025-01-07 05:35:27 UTC+0000
Release date
2026-01-07 05:35:27 UTC+0000
UTC Start
2025-01-07 05:23:15.416
UTC End
2025-01-07 05:29:15.416
MJD Start
60682.22448398
MJD End
60682.22865064666
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.009600500000000001
Ambient temperature (°C)
15.37
Seeing (arcsec)
0.69
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 42.3990 42.6440 141.1000 141.9000
A0-J2 127.5640 127.8880 81.9000 83.2000
A0-J6 157.3150 156.9150 21.6440 22.5540
B5-J2 111.9440 111.8850 62.9000 64.2000
B5-J6 181.9440 181.6820 9.9360 10.7540
J2-J6 145.2600 145.9060 331.9710 332.7560
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 60682.22448398
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 42.399
HIERARCH ESO ISS PBL12 END 42.644
HIERARCH ESO ISS PBLA12 START 141.1
HIERARCH ESO ISS PBLA12 END 141.9
HIERARCH ESO ISS PBL13 START 127.564
HIERARCH ESO ISS PBL13 END 127.888
HIERARCH ESO ISS PBLA13 START 81.9
HIERARCH ESO ISS PBLA13 END 83.2
HIERARCH ESO ISS PBL14 START 157.315
HIERARCH ESO ISS PBL14 END 156.915
HIERARCH ESO ISS PBLA14 START 21.644
HIERARCH ESO ISS PBLA14 END 22.554
HIERARCH ESO ISS PBL23 START 111.944
HIERARCH ESO ISS PBL23 END 111.885
HIERARCH ESO ISS PBLA23 START 62.9
HIERARCH ESO ISS PBLA23 END 64.2
HIERARCH ESO ISS PBL24 START 181.944
HIERARCH ESO ISS PBL24 END 181.682
HIERARCH ESO ISS PBLA24 START 9.936
HIERARCH ESO ISS PBLA24 END 10.754
HIERARCH ESO ISS PBL34 START 145.26
HIERARCH ESO ISS PBL34 END 145.906
HIERARCH ESO ISS PBLA34 START 331.971
HIERARCH ESO ISS PBLA34 END 332.756
HIERARCH ESO ISS AMBI TAU0 START 0.010085
HIERARCH ESO ISS AMBI TAU0 END 0.009116
HIERARCH ESO ISS AMBI TEMP 15.37
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.65