Exposure
ID
GRAVI.2025-07-21T05:25:19.026_1
Header ID
GRAVI.2025-07-21T05:25:19.026
Date updated
2025-07-21 05:41:13 UTC+0000
Release date
2025-07-21 05:25:19 UTC+0000
UTC Start
2025-07-21 05:25:19.026
UTC End
2025-07-21 05:31:59.026
MJD Start
60877.22591465
MJD End
60877.23054427963
Exposure time (s)
400.0
Validation level
1
Tau 0: Coherence time (s)
0.008312
Ambient temperature (°C)
15.09
Seeing (arcsec)
0.55
Observation
ID
68892
Category
calibrator
Program ID
113.26BP.001
Program Title
HIGH-PRECISION MASSES AND DISTANCES OF SPECTROSCOPIC BINARIES WITH INTERFEROMETRY - PART IV
Program Type
Normal
PI / COI
GALLENNE / PIETRZYNSKI / KERVELLA / MÉRAND / GIEREN / GRACZYK
Target
ID
51255
Name
HD_231808
RA
293.43813
DEC
15.24635
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 77.3350 76.0000 108.5000 108.4000
A0-J2 123.1470 121.9480 87.8000 87.3000
A0-K0 127.7900 127.5470 71.2300 70.7320
G1-J2 57.7020 57.8800 59.5000 59.2000
G1-K0 81.1530 81.8310 35.9610 36.1560
J2-K0 36.4700 36.4250 356.7480 357.7690
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 113.26BP.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60877.22591465
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD231808
HIERARCH ESO INS SOBJ NAME HD_231808
RA 293.43813
DEC 15.24635
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 414.0
HIERARCH ESO DET2 SEQ1 DIT 100.0
HIERARCH ESO DET2 NDIT 4
HIERARCH ESO ISS PBL12 START 77.335
HIERARCH ESO ISS PBL12 END 76.0
HIERARCH ESO ISS PBLA12 START 108.5
HIERARCH ESO ISS PBLA12 END 108.4
HIERARCH ESO ISS PBL13 START 123.147
HIERARCH ESO ISS PBL13 END 121.948
HIERARCH ESO ISS PBLA13 START 87.8
HIERARCH ESO ISS PBLA13 END 87.3
HIERARCH ESO ISS PBL14 START 127.79
HIERARCH ESO ISS PBL14 END 127.547
HIERARCH ESO ISS PBLA14 START 71.23
HIERARCH ESO ISS PBLA14 END 70.732
HIERARCH ESO ISS PBL23 START 57.702
HIERARCH ESO ISS PBL23 END 57.88
HIERARCH ESO ISS PBLA23 START 59.5
HIERARCH ESO ISS PBLA23 END 59.2
HIERARCH ESO ISS PBL24 START 81.153
HIERARCH ESO ISS PBL24 END 81.831
HIERARCH ESO ISS PBLA24 START 35.961
HIERARCH ESO ISS PBLA24 END 36.156
HIERARCH ESO ISS PBL34 START 36.47
HIERARCH ESO ISS PBL34 END 36.425
HIERARCH ESO ISS PBLA34 START 356.748
HIERARCH ESO ISS PBLA34 END 357.769
HIERARCH ESO ISS AMBI TAU0 START 0.008358
HIERARCH ESO ISS AMBI TAU0 END 0.008266
HIERARCH ESO ISS AMBI TEMP 15.09
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.62