Exposure
ID
GRAVI.2021-12-31T06:39:28.037_1
Header ID
GRAVI.2021-12-31T06:39:28.037
Date updated
2021-12-31 06:50:51 UTC+0000
Release date
2022-12-31 06:50:51 UTC+0000
UTC Start
2021-12-31 06:39:28.037
UTC End
2021-12-31 06:42:08.037
MJD Start
59579.27740784
MJD End
59579.2792596919
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.005362
Ambient temperature (°C)
13.69
Seeing (arcsec)
1.445
Observation
ID
49130
Category
science
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
36765
Name
HD_259440
RA
98.245785
DEC
5.80032
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 68.4290 67.7540 116.3000 116.5000
A0-J2 109.4870 108.6120 89.4000 89.3000
A0-J3 132.2130 132.1350 50.1180 50.0160
G1-J2 57.4620 57.3590 56.9000 56.7000
G1-J3 121.8450 122.0600 19.2050 19.4210
J2-J3 84.0380 83.9670 354.5120 354.9640
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 108.222E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 59579.27740784
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 259440
HIERARCH ESO INS SOBJ NAME HD_259440
RA 98.245785
DEC 5.80032
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 68.429
HIERARCH ESO ISS PBL12 END 67.754
HIERARCH ESO ISS PBLA12 START 116.3
HIERARCH ESO ISS PBLA12 END 116.5
HIERARCH ESO ISS PBL13 START 109.487
HIERARCH ESO ISS PBL13 END 108.612
HIERARCH ESO ISS PBLA13 START 89.4
HIERARCH ESO ISS PBLA13 END 89.3
HIERARCH ESO ISS PBL14 START 132.213
HIERARCH ESO ISS PBL14 END 132.135
HIERARCH ESO ISS PBLA14 START 50.118
HIERARCH ESO ISS PBLA14 END 50.016
HIERARCH ESO ISS PBL23 START 57.462
HIERARCH ESO ISS PBL23 END 57.359
HIERARCH ESO ISS PBLA23 START 56.9
HIERARCH ESO ISS PBLA23 END 56.7
HIERARCH ESO ISS PBL24 START 121.845
HIERARCH ESO ISS PBL24 END 122.06
HIERARCH ESO ISS PBLA24 START 19.205
HIERARCH ESO ISS PBLA24 END 19.421
HIERARCH ESO ISS PBL34 START 84.038
HIERARCH ESO ISS PBL34 END 83.967
HIERARCH ESO ISS PBLA34 START 354.512
HIERARCH ESO ISS PBLA34 END 354.964
HIERARCH ESO ISS AMBI TAU0 START 0.005313
HIERARCH ESO ISS AMBI TAU0 END 0.005411
HIERARCH ESO ISS AMBI TEMP 13.69
HIERARCH ESO ISS AMBI FWHM START 1.39
HIERARCH ESO ISS AMBI FWHM END 1.5