Exposure
ID
GRAVI.2025-11-30T07:09:17.978_1
Header ID
GRAVI.2025-11-30T07:09:17.978
Date updated
2025-11-30 07:26:21 UTC+0000
Release date
2026-11-30 07:26:21 UTC+0000
UTC Start
2025-11-30 07:09:17.978
UTC End
2025-11-30 07:15:17.978
MJD Start
61009.29812474
MJD End
61009.30229140667
Exposure time (s)
360.0
Validation level
1
Tau 0: Coherence time (s)
0.0049715
Ambient temperature (°C)
12.29
Seeing (arcsec)
0.585
Observation
ID
71915
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
53391
Name
HD_74438
RA
130.442074
DEC
-53.0624
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 40.4210 40.7330 135.2000 136.1000
A0-J2 124.4000 124.9420 72.7000 74.0000
A0-J6 159.5450 159.2850 15.1620 16.0980
B5-J2 111.7070 111.8050 53.9000 55.2000
B5-J6 183.1730 183.0610 4.1550 4.9840
J2-J6 139.9940 140.8280 326.6270 327.3730
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 61009.29812474
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 74438
HIERARCH ESO INS SOBJ NAME HD_74438
RA 130.442074
DEC -53.0624
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 40.421
HIERARCH ESO ISS PBL12 END 40.733
HIERARCH ESO ISS PBLA12 START 135.2
HIERARCH ESO ISS PBLA12 END 136.1
HIERARCH ESO ISS PBL13 START 124.4
HIERARCH ESO ISS PBL13 END 124.942
HIERARCH ESO ISS PBLA13 START 72.7
HIERARCH ESO ISS PBLA13 END 74.0
HIERARCH ESO ISS PBL14 START 159.545
HIERARCH ESO ISS PBL14 END 159.285
HIERARCH ESO ISS PBLA14 START 15.162
HIERARCH ESO ISS PBLA14 END 16.098
HIERARCH ESO ISS PBL23 START 111.707
HIERARCH ESO ISS PBL23 END 111.805
HIERARCH ESO ISS PBLA23 START 53.9
HIERARCH ESO ISS PBLA23 END 55.2
HIERARCH ESO ISS PBL24 START 183.173
HIERARCH ESO ISS PBL24 END 183.061
HIERARCH ESO ISS PBLA24 START 4.155
HIERARCH ESO ISS PBLA24 END 4.984
HIERARCH ESO ISS PBL34 START 139.994
HIERARCH ESO ISS PBL34 END 140.828
HIERARCH ESO ISS PBLA34 START 326.627
HIERARCH ESO ISS PBLA34 END 327.373
HIERARCH ESO ISS AMBI TAU0 START 0.004589
HIERARCH ESO ISS AMBI TAU0 END 0.005354
HIERARCH ESO ISS AMBI TEMP 12.29
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.62