Exposure
ID
GRAVI.2025-04-06T06:28:18.125_1
Header ID
GRAVI.2025-04-06T06:28:18.125
Date updated
2025-04-06 06:40:59 UTC+0000
Release date
2026-04-06 06:40:59 UTC+0000
UTC Start
2025-04-06 06:28:18.125
UTC End
2025-04-06 06:31:30.125
MJD Start
60771.26965423
MJD End
60771.27187645222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0025855
Ambient temperature (°C)
14.1
Seeing (arcsec)
0.655
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 20.7990 20.9570 127.8000 127.9000
A0-D0 26.8980 27.0490 38.4000 39.3000
A0-C1 16.5960 16.8080 95.1110 95.5110
B2-D0 33.8060 33.8070 0.5000 1.0000
B2-C1 11.2620 11.2620 0.4480 0.9840
D0-C1 22.5450 22.5450 180.4950 181.0320
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 60771.26965423
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 20.799
HIERARCH ESO ISS PBL12 END 20.957
HIERARCH ESO ISS PBLA12 START 127.8
HIERARCH ESO ISS PBLA12 END 127.9
HIERARCH ESO ISS PBL13 START 26.898
HIERARCH ESO ISS PBL13 END 27.049
HIERARCH ESO ISS PBLA13 START 38.4
HIERARCH ESO ISS PBLA13 END 39.3
HIERARCH ESO ISS PBL14 START 16.596
HIERARCH ESO ISS PBL14 END 16.808
HIERARCH ESO ISS PBLA14 START 95.111
HIERARCH ESO ISS PBLA14 END 95.511
HIERARCH ESO ISS PBL23 START 33.806
HIERARCH ESO ISS PBL23 END 33.807
HIERARCH ESO ISS PBLA23 START 0.5
HIERARCH ESO ISS PBLA23 END 1.0
HIERARCH ESO ISS PBL24 START 11.262
HIERARCH ESO ISS PBL24 END 11.262
HIERARCH ESO ISS PBLA24 START 0.448
HIERARCH ESO ISS PBLA24 END 0.984
HIERARCH ESO ISS PBL34 START 22.545
HIERARCH ESO ISS PBL34 END 22.545
HIERARCH ESO ISS PBLA34 START 180.495
HIERARCH ESO ISS PBLA34 END 181.032
HIERARCH ESO ISS AMBI TAU0 START 0.002725
HIERARCH ESO ISS AMBI TAU0 END 0.002446
HIERARCH ESO ISS AMBI TEMP 14.1
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.69