Exposure
ID
GRAVI.2023-08-19T02:34:27.431_1
Header ID
GRAVI.2023-08-19T02:34:27.431
Date updated
2023-08-19 02:46:18 UTC+0000
Release date
2023-08-19 02:34:27 UTC+0000
UTC Start
2023-08-19 02:34:27.431
UTC End
2023-08-19 02:39:47.431
MJD Start
60175.10726193
MJD End
60175.11096563371
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0022155
Ambient temperature (°C)
11.57
Seeing (arcsec)
0.8
Observation
ID
56642
Category
calibrator
Program ID
111.24JN.001
Program Title
ELUCIDATING THE EVOLUTIONARY CONNECTIONS BETWEEN NITROGEN- AND CARBON-RICH WOLF-RAYET STARS
Program Type
Normal
PI / COI
SANA/ SHENAR/ BODENSTEINER/ BORDIER/ DSILVA/ FROST/ LANGER/ LE BOUQUIN/ MAHY/ MÉRAND/ PATRICK/ REGGIANI/ TRAMPER/ VILLASEÑOR
Target
ID
41966
Name
HD_155808
RA
258.882528
DEC
-38.08615
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 86.7040 86.3740 139.8000 140.9000
A0-J2 115.5020 114.4850 117.2000 118.4000
A0-K0 108.1370 106.7840 92.9740 93.8930
G1-J2 48.6410 48.0310 74.0000 74.7000
G1-K0 79.8880 79.3400 40.6450 41.0650
J2-K0 47.5080 47.4840 6.3780 7.0090
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24JN.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60175.10726193
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD_155808
HIERARCH ESO INS SOBJ NAME HD_155808
RA 258.882528
DEC -38.08615
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 K0
EXPTIME 339.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 32
HIERARCH ESO ISS PBL12 START 86.704
HIERARCH ESO ISS PBL12 END 86.374
HIERARCH ESO ISS PBLA12 START 139.8
HIERARCH ESO ISS PBLA12 END 140.9
HIERARCH ESO ISS PBL13 START 115.502
HIERARCH ESO ISS PBL13 END 114.485
HIERARCH ESO ISS PBLA13 START 117.2
HIERARCH ESO ISS PBLA13 END 118.4
HIERARCH ESO ISS PBL14 START 108.137
HIERARCH ESO ISS PBL14 END 106.784
HIERARCH ESO ISS PBLA14 START 92.974
HIERARCH ESO ISS PBLA14 END 93.893
HIERARCH ESO ISS PBL23 START 48.641
HIERARCH ESO ISS PBL23 END 48.031
HIERARCH ESO ISS PBLA23 START 74.0
HIERARCH ESO ISS PBLA23 END 74.7
HIERARCH ESO ISS PBL24 START 79.888
HIERARCH ESO ISS PBL24 END 79.34
HIERARCH ESO ISS PBLA24 START 40.645
HIERARCH ESO ISS PBLA24 END 41.065
HIERARCH ESO ISS PBL34 START 47.508
HIERARCH ESO ISS PBL34 END 47.484
HIERARCH ESO ISS PBLA34 START 6.378
HIERARCH ESO ISS PBLA34 END 7.009
HIERARCH ESO ISS AMBI TAU0 START 0.002491
HIERARCH ESO ISS AMBI TAU0 END 0.00194
HIERARCH ESO ISS AMBI TEMP 11.57
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.82