Exposure
ID
GRAVI.2025-04-06T06:20:09.105_1
Header ID
GRAVI.2025-04-06T06:20:09.105
Date updated
2025-04-06 06:30:58 UTC+0000
Release date
2026-04-06 06:30:58 UTC+0000
UTC Start
2025-04-06 06:20:09.105
UTC End
2025-04-06 06:23:21.105
MJD Start
60771.26399427
MJD End
60771.26621649222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0029059999999999997
Ambient temperature (°C)
14.14
Seeing (arcsec)
0.63
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 20.4400 20.6040 127.5000 127.6000
A0-D0 26.5670 26.7160 36.5000 37.4000
A0-C1 16.1140 16.3340 94.2140 94.6210
B2-D0 33.8070 33.8060 359.3000 359.8000
B2-C1 11.2620 11.2620 359.2600 359.7960
D0-C1 22.5450 22.5450 179.3050 179.8420
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 60771.26399427
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 20.44
HIERARCH ESO ISS PBL12 END 20.604
HIERARCH ESO ISS PBLA12 START 127.5
HIERARCH ESO ISS PBLA12 END 127.6
HIERARCH ESO ISS PBL13 START 26.567
HIERARCH ESO ISS PBL13 END 26.716
HIERARCH ESO ISS PBLA13 START 36.5
HIERARCH ESO ISS PBLA13 END 37.4
HIERARCH ESO ISS PBL14 START 16.114
HIERARCH ESO ISS PBL14 END 16.334
HIERARCH ESO ISS PBLA14 START 94.214
HIERARCH ESO ISS PBLA14 END 94.621
HIERARCH ESO ISS PBL23 START 33.807
HIERARCH ESO ISS PBL23 END 33.806
HIERARCH ESO ISS PBLA23 START 359.3
HIERARCH ESO ISS PBLA23 END 359.8
HIERARCH ESO ISS PBL24 START 11.262
HIERARCH ESO ISS PBL24 END 11.262
HIERARCH ESO ISS PBLA24 START 359.26
HIERARCH ESO ISS PBLA24 END 359.796
HIERARCH ESO ISS PBL34 START 22.545
HIERARCH ESO ISS PBL34 END 22.545
HIERARCH ESO ISS PBLA34 START 179.305
HIERARCH ESO ISS PBLA34 END 179.842
HIERARCH ESO ISS AMBI TAU0 START 0.003567
HIERARCH ESO ISS AMBI TAU0 END 0.002245
HIERARCH ESO ISS AMBI TEMP 14.14
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.73