Exposure
ID
GRAVI.2023-08-20T02:56:40.262_1
Header ID
GRAVI.2023-08-20T02:56:40.262
Date updated
2023-08-20 03:10:29 UTC+0000
Release date
2024-08-20 03:10:29 UTC+0000
UTC Start
2023-08-20 02:56:40.262
UTC End
2023-08-20 03:02:00.262
MJD Start
60176.12268822
MJD End
60176.1263919237
Exposure time (s)
320.0
Validation level
1
Tau 0: Coherence time (s)
0.0032975
Ambient temperature (°C)
10.95
Seeing (arcsec)
0.875
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 85.6690 85.3430 144.6000 145.8000
A0-J2 111.7340 110.6710 122.3000 123.6000
A0-K0 102.5840 101.1060 97.3170 98.3210
G1-J2 45.9680 45.2880 77.3000 78.0000
G1-K0 77.1220 76.4970 42.5710 42.9570
J2-K0 47.2510 47.2150 8.9250 9.5460
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 60176.12268822
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 85.669
HIERARCH ESO ISS PBL12 END 85.343
HIERARCH ESO ISS PBLA12 START 144.6
HIERARCH ESO ISS PBLA12 END 145.8
HIERARCH ESO ISS PBL13 START 111.734
HIERARCH ESO ISS PBL13 END 110.671
HIERARCH ESO ISS PBLA13 START 122.3
HIERARCH ESO ISS PBLA13 END 123.6
HIERARCH ESO ISS PBL14 START 102.584
HIERARCH ESO ISS PBL14 END 101.106
HIERARCH ESO ISS PBLA14 START 97.317
HIERARCH ESO ISS PBLA14 END 98.321
HIERARCH ESO ISS PBL23 START 45.968
HIERARCH ESO ISS PBL23 END 45.288
HIERARCH ESO ISS PBLA23 START 77.3
HIERARCH ESO ISS PBLA23 END 78.0
HIERARCH ESO ISS PBL24 START 77.122
HIERARCH ESO ISS PBL24 END 76.497
HIERARCH ESO ISS PBLA24 START 42.571
HIERARCH ESO ISS PBLA24 END 42.957
HIERARCH ESO ISS PBL34 START 47.251
HIERARCH ESO ISS PBL34 END 47.215
HIERARCH ESO ISS PBLA34 START 8.925
HIERARCH ESO ISS PBLA34 END 9.546
HIERARCH ESO ISS AMBI TAU0 START 0.003311
HIERARCH ESO ISS AMBI TAU0 END 0.003284
HIERARCH ESO ISS AMBI TEMP 10.95
HIERARCH ESO ISS AMBI FWHM START 0.81
HIERARCH ESO ISS AMBI FWHM END 0.94