Exposure
ID
GRAVI.2025-05-14T07:01:46.670_1
Header ID
GRAVI.2025-05-14T07:01:46.670
Date updated
2025-05-14 07:10:57 UTC+0000
Release date
2025-05-14 07:01:46 UTC+0000
UTC Start
2025-05-14 07:01:46.670
UTC End
2025-05-14 07:04:26.670
MJD Start
60809.29290127
MJD End
60809.29475312185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0049465
Ambient temperature (°C)
16.32
Seeing (arcsec)
0.75
Observation
ID
67408
Category
calibrator
Program ID
115.28E1.001
Program Title
A CLOSER LOOK AT THE ENVIRONMENTS OF LATE-TYPE CARBON-RICH WOLF-RAYET STARS
Program Type
Normal
PI / COI
DESHMUKH / SANA / SANDER / SHENAR / MÉRAND / FROST / LEFEVER
Target
ID
50141
Name
HD172927
RA
280.737103
DEC
-1.96243
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 50.7890 50.9090 22.1000 22.4000
U1-U3 91.8440 92.1260 29.1000 29.5000
U1-U4 119.8390 120.3970 59.8360 60.0150
U2-U3 41.9090 42.0690 37.7000 38.0000
U2-U4 85.5560 85.8790 81.1650 81.2230
U3-U4 62.2230 62.2860 108.7700 108.7750
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.28E1.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60809.29290127
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 172927
HIERARCH ESO INS SOBJ NAME HD172927
RA 280.737103
DEC -1.96243
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 50.789
HIERARCH ESO ISS PBL12 END 50.909
HIERARCH ESO ISS PBLA12 START 22.1
HIERARCH ESO ISS PBLA12 END 22.4
HIERARCH ESO ISS PBL13 START 91.844
HIERARCH ESO ISS PBL13 END 92.126
HIERARCH ESO ISS PBLA13 START 29.1
HIERARCH ESO ISS PBLA13 END 29.5
HIERARCH ESO ISS PBL14 START 119.839
HIERARCH ESO ISS PBL14 END 120.397
HIERARCH ESO ISS PBLA14 START 59.836
HIERARCH ESO ISS PBLA14 END 60.015
HIERARCH ESO ISS PBL23 START 41.909
HIERARCH ESO ISS PBL23 END 42.069
HIERARCH ESO ISS PBLA23 START 37.7
HIERARCH ESO ISS PBLA23 END 38.0
HIERARCH ESO ISS PBL24 START 85.556
HIERARCH ESO ISS PBL24 END 85.879
HIERARCH ESO ISS PBLA24 START 81.165
HIERARCH ESO ISS PBLA24 END 81.223
HIERARCH ESO ISS PBL34 START 62.223
HIERARCH ESO ISS PBL34 END 62.286
HIERARCH ESO ISS PBLA34 START 108.77
HIERARCH ESO ISS PBLA34 END 108.775
HIERARCH ESO ISS AMBI TAU0 START 0.005159
HIERARCH ESO ISS AMBI TAU0 END 0.004734
HIERARCH ESO ISS AMBI TEMP 16.32
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.81