Exposure
ID
GRAVI.2025-05-23T05:42:46.285_1
Header ID
GRAVI.2025-05-23T05:42:46.285
Date updated
2025-05-23 05:56:02 UTC+0000
Release date
2026-05-23 05:56:01 UTC+0000
UTC Start
2025-05-23 05:42:46.285
UTC End
2025-05-23 05:45:58.285
MJD Start
60818.23803571
MJD End
60818.24025793222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.00481
Ambient temperature (°C)
13.64
Seeing (arcsec)
0.565
Observation
ID
67543
Category
science
Program ID
115.27VK.001
Program Title
UNVEILING THE MASS-LOSS PROCESS OF RED SUPERGIANTS: THE VARIABILITY ACROSS THE MOLECULAR LAYERS AND THE PHOTOSPHERE
Program Type
Normal
PI / COI
JADLOVSKY / WITTKOWSKI / CHIAVASSA / KRAVCHENKO / GONZÁLEZ-TORÀ / KRTICKA / PALADINI / HÖFNER / FREYTAG
Target
ID
50233
Name
HD_163755
RA
269.77202
DEC
-30.25307
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 66.8390 67.0320 264.6000 265.0000
K0-D0 94.7480 94.9330 243.8000 244.4000
K0-J3 55.5290 55.6080 327.2740 327.6120
G2-D0 39.9740 39.9800 207.6000 208.1000
G2-J3 64.4120 64.4380 34.5350 35.0350
D0-J3 104.2030 104.2340 31.8680 32.3620
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27VK.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60818.23803571
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 163755
HIERARCH ESO INS SOBJ NAME HD_163755
RA 269.77202
DEC -30.25307
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 66.839
HIERARCH ESO ISS PBL12 END 67.032
HIERARCH ESO ISS PBLA12 START 264.6
HIERARCH ESO ISS PBLA12 END 265.0
HIERARCH ESO ISS PBL13 START 94.748
HIERARCH ESO ISS PBL13 END 94.933
HIERARCH ESO ISS PBLA13 START 243.8
HIERARCH ESO ISS PBLA13 END 244.4
HIERARCH ESO ISS PBL14 START 55.529
HIERARCH ESO ISS PBL14 END 55.608
HIERARCH ESO ISS PBLA14 START 327.274
HIERARCH ESO ISS PBLA14 END 327.612
HIERARCH ESO ISS PBL23 START 39.974
HIERARCH ESO ISS PBL23 END 39.98
HIERARCH ESO ISS PBLA23 START 207.6
HIERARCH ESO ISS PBLA23 END 208.1
HIERARCH ESO ISS PBL24 START 64.412
HIERARCH ESO ISS PBL24 END 64.438
HIERARCH ESO ISS PBLA24 START 34.535
HIERARCH ESO ISS PBLA24 END 35.035
HIERARCH ESO ISS PBL34 START 104.203
HIERARCH ESO ISS PBL34 END 104.234
HIERARCH ESO ISS PBLA34 START 31.868
HIERARCH ESO ISS PBLA34 END 32.362
HIERARCH ESO ISS AMBI TAU0 START 0.004565
HIERARCH ESO ISS AMBI TAU0 END 0.005055
HIERARCH ESO ISS AMBI TEMP 13.64
HIERARCH ESO ISS AMBI FWHM START 0.56
HIERARCH ESO ISS AMBI FWHM END 0.57