Exposure
ID
GRAVI.2025-04-06T06:48:51.178_1
Header ID
GRAVI.2025-04-06T06:48:51.178
Date updated
2025-04-06 07:00:58 UTC+0000
Release date
2026-04-06 07:00:58 UTC+0000
UTC Start
2025-04-06 06:48:51.178
UTC End
2025-04-06 06:52:03.178
MJD Start
60771.28392567
MJD End
60771.28614789223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.004027
Ambient temperature (°C)
13.87
Seeing (arcsec)
0.61
Observation
ID
66056
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
49175
Name
HD_163755
RA
269.769447
DEC
-30.25307
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 21.6390 21.7810 128.6000 128.8000
A0-D0 27.7430 27.8950 43.1000 43.9000
A0-C1 17.7320 17.9250 97.2940 97.6790
B2-D0 33.8140 33.8170 3.5000 4.0000
B2-C1 11.2640 11.2650 3.4210 3.9550
D0-C1 22.5500 22.5520 183.4710 184.0050
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 60771.28392567
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 163755
HIERARCH ESO INS SOBJ NAME HD_163755
RA 269.769447
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 A0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 21.639
HIERARCH ESO ISS PBL12 END 21.781
HIERARCH ESO ISS PBLA12 START 128.6
HIERARCH ESO ISS PBLA12 END 128.8
HIERARCH ESO ISS PBL13 START 27.743
HIERARCH ESO ISS PBL13 END 27.895
HIERARCH ESO ISS PBLA13 START 43.1
HIERARCH ESO ISS PBLA13 END 43.9
HIERARCH ESO ISS PBL14 START 17.732
HIERARCH ESO ISS PBL14 END 17.925
HIERARCH ESO ISS PBLA14 START 97.294
HIERARCH ESO ISS PBLA14 END 97.679
HIERARCH ESO ISS PBL23 START 33.814
HIERARCH ESO ISS PBL23 END 33.817
HIERARCH ESO ISS PBLA23 START 3.5
HIERARCH ESO ISS PBLA23 END 4.0
HIERARCH ESO ISS PBL24 START 11.264
HIERARCH ESO ISS PBL24 END 11.265
HIERARCH ESO ISS PBLA24 START 3.421
HIERARCH ESO ISS PBLA24 END 3.955
HIERARCH ESO ISS PBL34 START 22.55
HIERARCH ESO ISS PBL34 END 22.552
HIERARCH ESO ISS PBLA34 START 183.471
HIERARCH ESO ISS PBLA34 END 184.005
HIERARCH ESO ISS AMBI TAU0 START 0.003753
HIERARCH ESO ISS AMBI TAU0 END 0.004301
HIERARCH ESO ISS AMBI TEMP 13.87
HIERARCH ESO ISS AMBI FWHM START 0.58
HIERARCH ESO ISS AMBI FWHM END 0.64