Exposure
ID
GRAVI.2025-11-27T06:21:56.428_1
Header ID
GRAVI.2025-11-27T06:21:56.428
Date updated
2025-11-27 06:35:58 UTC+0000
Release date
2025-11-27 06:21:56 UTC+0000
UTC Start
2025-11-27 06:21:56.428
UTC End
2025-11-27 06:25:56.428
MJD Start
61006.26523643
MJD End
61006.26801420778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0035905
Ambient temperature (°C)
14.84
Seeing (arcsec)
0.685
Observation
ID
71873
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
53354
Name
HD_41644
RA
91.516912
DEC
-7.31576
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 46.9980 46.8810 150.3000 150.7000
A0-J2 129.2300 129.1870 92.7000 92.8000
A0-J6 163.4020 163.7830 26.9680 27.3640
B5-J2 111.4040 111.5880 71.8000 71.9000
B5-J6 193.2630 193.5490 15.2460 15.6880
J2-J6 161.2770 160.9800 340.0630 340.4940
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 61006.26523643
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 41644
HIERARCH ESO INS SOBJ NAME HD_41644
RA 91.516912
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 46.998
HIERARCH ESO ISS PBL12 END 46.881
HIERARCH ESO ISS PBLA12 START 150.3
HIERARCH ESO ISS PBLA12 END 150.7
HIERARCH ESO ISS PBL13 START 129.23
HIERARCH ESO ISS PBL13 END 129.187
HIERARCH ESO ISS PBLA13 START 92.7
HIERARCH ESO ISS PBLA13 END 92.8
HIERARCH ESO ISS PBL14 START 163.402
HIERARCH ESO ISS PBL14 END 163.783
HIERARCH ESO ISS PBLA14 START 26.968
HIERARCH ESO ISS PBLA14 END 27.364
HIERARCH ESO ISS PBL23 START 111.404
HIERARCH ESO ISS PBL23 END 111.588
HIERARCH ESO ISS PBLA23 START 71.8
HIERARCH ESO ISS PBLA23 END 71.9
HIERARCH ESO ISS PBL24 START 193.263
HIERARCH ESO ISS PBL24 END 193.549
HIERARCH ESO ISS PBLA24 START 15.246
HIERARCH ESO ISS PBLA24 END 15.688
HIERARCH ESO ISS PBL34 START 161.277
HIERARCH ESO ISS PBL34 END 160.98
HIERARCH ESO ISS PBLA34 START 340.063
HIERARCH ESO ISS PBLA34 END 340.494
HIERARCH ESO ISS AMBI TAU0 START 0.003718
HIERARCH ESO ISS AMBI TAU0 END 0.003463
HIERARCH ESO ISS AMBI TEMP 14.84
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.69