Exposure
ID
GRAVI.2021-12-31T03:46:39.602_1
Header ID
GRAVI.2021-12-31T03:46:39.602
Date updated
2021-12-31 03:56:37 UTC+0000
Release date
2021-12-31 03:46:39 UTC+0000
UTC Start
2021-12-31 03:46:39.602
UTC End
2021-12-31 03:49:19.602
MJD Start
59579.1574028
MJD End
59579.1592546519
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0035625
Ambient temperature (°C)
14.61
Seeing (arcsec)
0.68
Observation
ID
49122
Category
calibrator
Program ID
108.222E.001
Program Title
THE ORIGIN OF BE STARS AND THE ELUSIVE MASSIVE HELIUM STARS
Program Type
Normal
PI / COI
SHENAR/ BODENSTEINER/ SANA/ DSILVA/ LANGER/ SCHÜRMANN/ OSKINOVA/ MAHY/ LANTHERMANN/ BORDIER/ FROST/ MARCHANT/ GILKIS/ KLUSKA
Target
ID
36757
Name
HD_44915
RA
95.711922
DEC
-34.45271
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 88.6090 88.7850 110.5000 110.9000
A0-J2 127.7840 127.9790 87.2000 87.6000
A0-J3 132.3920 132.3700 41.2570 41.6580
G1-J2 58.2220 58.2280 50.1000 50.5000
G1-J3 130.7000 130.6920 1.9020 2.2160
J2-J3 101.6190 101.7090 336.6210 336.9140
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.222E.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 59579.1574028
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 44915
HIERARCH ESO INS SOBJ NAME HD_44915
RA 95.711922
DEC -34.45271
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 176.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 88.609
HIERARCH ESO ISS PBL12 END 88.785
HIERARCH ESO ISS PBLA12 START 110.5
HIERARCH ESO ISS PBLA12 END 110.9
HIERARCH ESO ISS PBL13 START 127.784
HIERARCH ESO ISS PBL13 END 127.979
HIERARCH ESO ISS PBLA13 START 87.2
HIERARCH ESO ISS PBLA13 END 87.6
HIERARCH ESO ISS PBL14 START 132.392
HIERARCH ESO ISS PBL14 END 132.37
HIERARCH ESO ISS PBLA14 START 41.257
HIERARCH ESO ISS PBLA14 END 41.658
HIERARCH ESO ISS PBL23 START 58.222
HIERARCH ESO ISS PBL23 END 58.228
HIERARCH ESO ISS PBLA23 START 50.1
HIERARCH ESO ISS PBLA23 END 50.5
HIERARCH ESO ISS PBL24 START 130.7
HIERARCH ESO ISS PBL24 END 130.692
HIERARCH ESO ISS PBLA24 START 1.902
HIERARCH ESO ISS PBLA24 END 2.216
HIERARCH ESO ISS PBL34 START 101.619
HIERARCH ESO ISS PBL34 END 101.709
HIERARCH ESO ISS PBLA34 START 336.621
HIERARCH ESO ISS PBLA34 END 336.914
HIERARCH ESO ISS AMBI TAU0 START 0.003498
HIERARCH ESO ISS AMBI TAU0 END 0.003627
HIERARCH ESO ISS AMBI TEMP 14.61
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.68