Exposure
ID
GRAVI.2021-12-31T03:49:51.610_1
Header ID
GRAVI.2021-12-31T03:49:51.610
Date updated
2021-12-31 04:01:53 UTC+0000
Release date
2021-12-31 03:49:51 UTC+0000
UTC Start
2021-12-31 03:49:51.610
UTC End
2021-12-31 03:52:31.610
MJD Start
59579.15962512
MJD End
59579.1614769719
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.004266
Ambient temperature (°C)
14.55
Seeing (arcsec)
0.645
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 88.8020 88.9690 111.0000 111.3000
A0-J2 127.9980 128.1780 87.7000 88.1000
A0-J3 132.3670 132.3380 41.6990 42.0960
G1-J2 58.2280 58.2290 50.5000 51.0000
G1-J3 130.6920 130.6820 2.2490 2.5620
J2-J3 101.7180 101.8050 336.9450 337.2400
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 59579.15962512
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 88.802
HIERARCH ESO ISS PBL12 END 88.969
HIERARCH ESO ISS PBLA12 START 111.0
HIERARCH ESO ISS PBLA12 END 111.3
HIERARCH ESO ISS PBL13 START 127.998
HIERARCH ESO ISS PBL13 END 128.178
HIERARCH ESO ISS PBLA13 START 87.7
HIERARCH ESO ISS PBLA13 END 88.1
HIERARCH ESO ISS PBL14 START 132.367
HIERARCH ESO ISS PBL14 END 132.338
HIERARCH ESO ISS PBLA14 START 41.699
HIERARCH ESO ISS PBLA14 END 42.096
HIERARCH ESO ISS PBL23 START 58.228
HIERARCH ESO ISS PBL23 END 58.229
HIERARCH ESO ISS PBLA23 START 50.5
HIERARCH ESO ISS PBLA23 END 51.0
HIERARCH ESO ISS PBL24 START 130.692
HIERARCH ESO ISS PBL24 END 130.682
HIERARCH ESO ISS PBLA24 START 2.249
HIERARCH ESO ISS PBLA24 END 2.562
HIERARCH ESO ISS PBL34 START 101.718
HIERARCH ESO ISS PBL34 END 101.805
HIERARCH ESO ISS PBLA34 START 336.945
HIERARCH ESO ISS PBLA34 END 337.24
HIERARCH ESO ISS AMBI TAU0 START 0.003627
HIERARCH ESO ISS AMBI TAU0 END 0.004905
HIERARCH ESO ISS AMBI TEMP 14.55
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.61