Exposure
ID
GRAVI.2025-06-21T04:01:40.188_1
Header ID
GRAVI.2025-06-21T04:01:40.188
Date updated
2025-06-21 04:15:54 UTC+0000
Release date
2026-06-21 04:15:53 UTC+0000
UTC Start
2025-06-21 04:01:40.188
UTC End
2025-06-21 04:04:52.188
MJD Start
60847.16782625
MJD End
60847.170048472224
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0052604999999999996
Ambient temperature (°C)
12.05
Seeing (arcsec)
0.71
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 67.4550 67.6020 266.2000 266.7000
K0-D0 95.3320 95.4660 245.6000 246.1000
K0-J3 55.7900 55.8560 328.4800 328.8340
G2-D0 39.9870 39.9870 209.2000 209.7000
G2-J3 64.4850 64.4970 36.2610 36.7400
D0-J3 104.2870 104.2980 33.5740 34.0480
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 60847.16782625
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 67.455
HIERARCH ESO ISS PBL12 END 67.602
HIERARCH ESO ISS PBLA12 START 266.2
HIERARCH ESO ISS PBLA12 END 266.7
HIERARCH ESO ISS PBL13 START 95.332
HIERARCH ESO ISS PBL13 END 95.466
HIERARCH ESO ISS PBLA13 START 245.6
HIERARCH ESO ISS PBLA13 END 246.1
HIERARCH ESO ISS PBL14 START 55.79
HIERARCH ESO ISS PBL14 END 55.856
HIERARCH ESO ISS PBLA14 START 328.48
HIERARCH ESO ISS PBLA14 END 328.834
HIERARCH ESO ISS PBL23 START 39.987
HIERARCH ESO ISS PBL23 END 39.987
HIERARCH ESO ISS PBLA23 START 209.2
HIERARCH ESO ISS PBLA23 END 209.7
HIERARCH ESO ISS PBL24 START 64.485
HIERARCH ESO ISS PBL24 END 64.497
HIERARCH ESO ISS PBLA24 START 36.261
HIERARCH ESO ISS PBLA24 END 36.74
HIERARCH ESO ISS PBL34 START 104.287
HIERARCH ESO ISS PBL34 END 104.298
HIERARCH ESO ISS PBLA34 START 33.574
HIERARCH ESO ISS PBLA34 END 34.048
HIERARCH ESO ISS AMBI TAU0 START 0.004631
HIERARCH ESO ISS AMBI TAU0 END 0.00589
HIERARCH ESO ISS AMBI TEMP 12.05
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.7