Exposure
ID
GRAVI.2021-12-31T06:44:31.050_1
Header ID
GRAVI.2021-12-31T06:44:31.050
Date updated
2021-12-31 06:56:16 UTC+0000
Release date
2022-12-31 06:56:16 UTC+0000
UTC Start
2021-12-31 06:44:31.050
UTC End
2021-12-31 06:47:11.050
MJD Start
59579.28091493
MJD End
59579.2827667819
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0053315
Ambient temperature (°C)
13.82
Seeing (arcsec)
1.12
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 67.2460 66.5550 116.6000 116.9000
A0-J2 107.9470 107.0370 89.3000 89.2000
A0-J3 132.0680 131.9690 49.9380 49.8280
G1-J2 57.2780 57.1640 56.6000 56.5000
G1-J3 122.2210 122.4380 19.5790 19.7890
J2-J3 83.9180 83.8570 355.3030 355.7600
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 59579.28091493
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 67.246
HIERARCH ESO ISS PBL12 END 66.555
HIERARCH ESO ISS PBLA12 START 116.6
HIERARCH ESO ISS PBLA12 END 116.9
HIERARCH ESO ISS PBL13 START 107.947
HIERARCH ESO ISS PBL13 END 107.037
HIERARCH ESO ISS PBLA13 START 89.3
HIERARCH ESO ISS PBLA13 END 89.2
HIERARCH ESO ISS PBL14 START 132.068
HIERARCH ESO ISS PBL14 END 131.969
HIERARCH ESO ISS PBLA14 START 49.938
HIERARCH ESO ISS PBLA14 END 49.828
HIERARCH ESO ISS PBL23 START 57.278
HIERARCH ESO ISS PBL23 END 57.164
HIERARCH ESO ISS PBLA23 START 56.6
HIERARCH ESO ISS PBLA23 END 56.5
HIERARCH ESO ISS PBL24 START 122.221
HIERARCH ESO ISS PBL24 END 122.438
HIERARCH ESO ISS PBLA24 START 19.579
HIERARCH ESO ISS PBLA24 END 19.789
HIERARCH ESO ISS PBL34 START 83.918
HIERARCH ESO ISS PBL34 END 83.857
HIERARCH ESO ISS PBLA34 START 355.303
HIERARCH ESO ISS PBLA34 END 355.76
HIERARCH ESO ISS AMBI TAU0 START 0.004442
HIERARCH ESO ISS AMBI TAU0 END 0.006221
HIERARCH ESO ISS AMBI TEMP 13.82
HIERARCH ESO ISS AMBI FWHM START 1.25
HIERARCH ESO ISS AMBI FWHM END 0.99