Exposure
ID
GRAVI.2023-08-20T02:44:37.232_1
Header ID
GRAVI.2023-08-20T02:44:37.232
Date updated
2023-08-20 02:55:23 UTC+0000
Release date
2024-08-20 02:55:23 UTC+0000
UTC Start
2023-08-20 02:44:37.232
UTC End
2023-08-20 02:49:57.232
MJD Start
60176.11431981
MJD End
60176.11802351371
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0031745000000000002
Ambient temperature (°C)
10.95
Seeing (arcsec)
0.99
Observation
ID
56658
Category
science
Program ID
111.24JN.002
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
41979
Name
WR_87
RA
259.717446
DEC
-38.83435
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 86.3580 86.0350 142.1000 143.3000
A0-J2 113.9480 112.9170 119.8000 120.9000
A0-K0 105.6190 104.2120 95.2400 96.2080
G1-J2 47.3580 46.7150 75.8000 76.5000
G1-K0 78.3960 77.8070 41.7150 42.1250
J2-K0 47.3180 47.2880 7.5950 8.2230
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 111.24JN.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60176.11431981
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME WR_87
HIERARCH ESO INS SOBJ NAME WR_87
RA 259.717446
DEC -38.83435
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 86.358
HIERARCH ESO ISS PBL12 END 86.035
HIERARCH ESO ISS PBLA12 START 142.1
HIERARCH ESO ISS PBLA12 END 143.3
HIERARCH ESO ISS PBL13 START 113.948
HIERARCH ESO ISS PBL13 END 112.917
HIERARCH ESO ISS PBLA13 START 119.8
HIERARCH ESO ISS PBLA13 END 120.9
HIERARCH ESO ISS PBL14 START 105.619
HIERARCH ESO ISS PBL14 END 104.212
HIERARCH ESO ISS PBLA14 START 95.24
HIERARCH ESO ISS PBLA14 END 96.208
HIERARCH ESO ISS PBL23 START 47.358
HIERARCH ESO ISS PBL23 END 46.715
HIERARCH ESO ISS PBLA23 START 75.8
HIERARCH ESO ISS PBLA23 END 76.5
HIERARCH ESO ISS PBL24 START 78.396
HIERARCH ESO ISS PBL24 END 77.807
HIERARCH ESO ISS PBLA24 START 41.715
HIERARCH ESO ISS PBLA24 END 42.125
HIERARCH ESO ISS PBL34 START 47.318
HIERARCH ESO ISS PBL34 END 47.288
HIERARCH ESO ISS PBLA34 START 7.595
HIERARCH ESO ISS PBLA34 END 8.223
HIERARCH ESO ISS AMBI TAU0 START 0.003218
HIERARCH ESO ISS AMBI TAU0 END 0.003131
HIERARCH ESO ISS AMBI TEMP 10.95
HIERARCH ESO ISS AMBI FWHM START 1.03
HIERARCH ESO ISS AMBI FWHM END 0.95