Exposure
ID
GRAVI.2025-05-23T05:34:34.265_1
Header ID
GRAVI.2025-05-23T05:34:34.265
Date updated
2025-05-23 05:51:10 UTC+0000
Release date
2026-05-23 05:51:10 UTC+0000
UTC Start
2025-05-23 05:34:34.265
UTC End
2025-05-23 05:37:46.265
MJD Start
60818.23234103
MJD End
60818.23456325223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.005116
Ambient temperature (°C)
13.72
Seeing (arcsec)
0.51
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 66.3690 66.5890 263.5000 264.0000
K0-D0 94.2890 94.5050 242.7000 243.2000
K0-J3 55.3390 55.4270 326.5450 326.8730
G2-D0 39.9560 39.9650 206.5000 207.0000
G2-J3 64.3410 64.3750 33.4120 33.9250
D0-J3 104.1170 104.1590 30.7600 31.2660
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 60818.23234103
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 66.369
HIERARCH ESO ISS PBL12 END 66.589
HIERARCH ESO ISS PBLA12 START 263.5
HIERARCH ESO ISS PBLA12 END 264.0
HIERARCH ESO ISS PBL13 START 94.289
HIERARCH ESO ISS PBL13 END 94.505
HIERARCH ESO ISS PBLA13 START 242.7
HIERARCH ESO ISS PBLA13 END 243.2
HIERARCH ESO ISS PBL14 START 55.339
HIERARCH ESO ISS PBL14 END 55.427
HIERARCH ESO ISS PBLA14 START 326.545
HIERARCH ESO ISS PBLA14 END 326.873
HIERARCH ESO ISS PBL23 START 39.956
HIERARCH ESO ISS PBL23 END 39.965
HIERARCH ESO ISS PBLA23 START 206.5
HIERARCH ESO ISS PBLA23 END 207.0
HIERARCH ESO ISS PBL24 START 64.341
HIERARCH ESO ISS PBL24 END 64.375
HIERARCH ESO ISS PBLA24 START 33.412
HIERARCH ESO ISS PBLA24 END 33.925
HIERARCH ESO ISS PBL34 START 104.117
HIERARCH ESO ISS PBL34 END 104.159
HIERARCH ESO ISS PBLA34 START 30.76
HIERARCH ESO ISS PBLA34 END 31.266
HIERARCH ESO ISS AMBI TAU0 START 0.004979
HIERARCH ESO ISS AMBI TAU0 END 0.005253
HIERARCH ESO ISS AMBI TEMP 13.72
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.5