Exposure
ID
GRAVI.2025-10-27T07:36:04.459_1
Header ID
GRAVI.2025-10-27T07:36:04.459
Date updated
2025-10-27 07:50:41 UTC+0000
Release date
2025-10-27 07:36:04 UTC+0000
UTC Start
2025-10-27 07:36:04.459
UTC End
2025-10-27 07:40:04.459
MJD Start
60975.31671828
MJD End
60975.31949605778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.003359
Ambient temperature (°C)
12.61
Seeing (arcsec)
1.005
Observation
ID
71017
Category
calibrator
Program ID
116.28L4.001
Program Title
DETERMINING PRECISE DYNAMICAL MASSES OF A UNIQUE BE + SDO SYSTEM TO CALIBRATE THE PHYSICS OF BINARY MASS TRANSFER
Program Type
Normal
PI / COI
KLEMENT / RIVINIUS / DE MINK / LECHIEN
Target
ID
52701
Name
HD_41644
RA
91.515793
DEC
-7.31576
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 90.3270 90.4110 113.2000 113.4000
A0-J2 126.7140 127.1610 91.2000 91.3000
A0-K0 122.3570 122.9870 69.4470 69.6930
G1-J2 54.8030 55.0870 52.9000 53.2000
G1-K0 84.7120 84.9310 21.8820 22.3810
J2-K0 47.1160 47.0580 345.0920 345.4930
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 116.28L4.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60975.31671828
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 41644
HIERARCH ESO INS SOBJ NAME HD_41644
RA 91.515793
DEC -7.31576
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 90.327
HIERARCH ESO ISS PBL12 END 90.411
HIERARCH ESO ISS PBLA12 START 113.2
HIERARCH ESO ISS PBLA12 END 113.4
HIERARCH ESO ISS PBL13 START 126.714
HIERARCH ESO ISS PBL13 END 127.161
HIERARCH ESO ISS PBLA13 START 91.2
HIERARCH ESO ISS PBLA13 END 91.3
HIERARCH ESO ISS PBL14 START 122.357
HIERARCH ESO ISS PBL14 END 122.987
HIERARCH ESO ISS PBLA14 START 69.447
HIERARCH ESO ISS PBLA14 END 69.693
HIERARCH ESO ISS PBL23 START 54.803
HIERARCH ESO ISS PBL23 END 55.087
HIERARCH ESO ISS PBLA23 START 52.9
HIERARCH ESO ISS PBLA23 END 53.2
HIERARCH ESO ISS PBL24 START 84.712
HIERARCH ESO ISS PBL24 END 84.931
HIERARCH ESO ISS PBLA24 START 21.882
HIERARCH ESO ISS PBLA24 END 22.381
HIERARCH ESO ISS PBL34 START 47.116
HIERARCH ESO ISS PBL34 END 47.058
HIERARCH ESO ISS PBLA34 START 345.092
HIERARCH ESO ISS PBLA34 END 345.493
HIERARCH ESO ISS AMBI TAU0 START 0.003247
HIERARCH ESO ISS AMBI TAU0 END 0.003471
HIERARCH ESO ISS AMBI TEMP 12.61
HIERARCH ESO ISS AMBI FWHM START 1.05
HIERARCH ESO ISS AMBI FWHM END 0.96