Exposure
ID
GRAVI.2025-04-29T06:07:49.267_1
Header ID
GRAVI.2025-04-29T06:07:49.267
Date updated
2025-04-29 06:20:53 UTC+0000
Release date
2026-04-29 06:20:52 UTC+0000
UTC Start
2025-04-29 06:07:49.267
UTC End
2025-04-29 06:10:29.267
MJD Start
60794.25543133
MJD End
60794.257283181854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0053100000000000005
Ambient temperature (°C)
12.92
Seeing (arcsec)
0.515
Observation
ID
67042
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
49850
Name
HD_155666
RA
258.625321
DEC
-34.80753
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 85.1320 85.4430 105.4000 105.7000
A0-J2 123.6570 124.0460 81.1000 81.6000
A0-K0 125.3540 125.5860 59.2700 59.7570
G1-J2 57.8270 57.8760 43.9000 44.4000
G1-K0 90.3490 90.3340 16.5070 16.8990
J2-K0 47.2060 47.2440 342.2170 342.4980
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 60794.25543133
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 155666
HIERARCH ESO INS SOBJ NAME HD_155666
RA 258.625321
DEC -34.80753
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 85.132
HIERARCH ESO ISS PBL12 END 85.443
HIERARCH ESO ISS PBLA12 START 105.4
HIERARCH ESO ISS PBLA12 END 105.7
HIERARCH ESO ISS PBL13 START 123.657
HIERARCH ESO ISS PBL13 END 124.046
HIERARCH ESO ISS PBLA13 START 81.1
HIERARCH ESO ISS PBLA13 END 81.6
HIERARCH ESO ISS PBL14 START 125.354
HIERARCH ESO ISS PBL14 END 125.586
HIERARCH ESO ISS PBLA14 START 59.27
HIERARCH ESO ISS PBLA14 END 59.757
HIERARCH ESO ISS PBL23 START 57.827
HIERARCH ESO ISS PBL23 END 57.876
HIERARCH ESO ISS PBLA23 START 43.9
HIERARCH ESO ISS PBLA23 END 44.4
HIERARCH ESO ISS PBL24 START 90.349
HIERARCH ESO ISS PBL24 END 90.334
HIERARCH ESO ISS PBLA24 START 16.507
HIERARCH ESO ISS PBLA24 END 16.899
HIERARCH ESO ISS PBL34 START 47.206
HIERARCH ESO ISS PBL34 END 47.244
HIERARCH ESO ISS PBLA34 START 342.217
HIERARCH ESO ISS PBLA34 END 342.498
HIERARCH ESO ISS AMBI TAU0 START 0.005233
HIERARCH ESO ISS AMBI TAU0 END 0.005387
HIERARCH ESO ISS AMBI TEMP 12.92
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.51