Exposure
ID
GRAVI.2025-05-26T03:48:29.205_1
Header ID
GRAVI.2025-05-26T03:48:29.205
Date updated
2025-05-26 04:01:12 UTC+0000
Release date
2026-05-26 04:01:12 UTC+0000
UTC Start
2025-05-26 03:48:29.205
UTC End
2025-05-26 03:51:09.205
MJD Start
60821.15867135
MJD End
60821.160523201856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003874
Ambient temperature (°C)
11.92
Seeing (arcsec)
0.65
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 81.0080 81.4230 101.3000 101.7000
A0-J2 118.4430 118.9690 75.9000 76.3000
A0-K0 122.1820 122.5030 53.5400 54.0700
G1-J2 57.1150 57.1890 38.3000 38.8000
G1-K0 90.4550 90.4500 12.0160 12.4200
J2-K0 46.7070 46.7570 339.2050 339.4610
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 60821.15867135
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 81.008
HIERARCH ESO ISS PBL12 END 81.423
HIERARCH ESO ISS PBLA12 START 101.3
HIERARCH ESO ISS PBLA12 END 101.7
HIERARCH ESO ISS PBL13 START 118.443
HIERARCH ESO ISS PBL13 END 118.969
HIERARCH ESO ISS PBLA13 START 75.9
HIERARCH ESO ISS PBLA13 END 76.3
HIERARCH ESO ISS PBL14 START 122.182
HIERARCH ESO ISS PBL14 END 122.503
HIERARCH ESO ISS PBLA14 START 53.54
HIERARCH ESO ISS PBLA14 END 54.07
HIERARCH ESO ISS PBL23 START 57.115
HIERARCH ESO ISS PBL23 END 57.189
HIERARCH ESO ISS PBLA23 START 38.3
HIERARCH ESO ISS PBLA23 END 38.8
HIERARCH ESO ISS PBL24 START 90.455
HIERARCH ESO ISS PBL24 END 90.45
HIERARCH ESO ISS PBLA24 START 12.016
HIERARCH ESO ISS PBLA24 END 12.42
HIERARCH ESO ISS PBL34 START 46.707
HIERARCH ESO ISS PBL34 END 46.757
HIERARCH ESO ISS PBLA34 START 339.205
HIERARCH ESO ISS PBLA34 END 339.461
HIERARCH ESO ISS AMBI TAU0 START 0.004137
HIERARCH ESO ISS AMBI TAU0 END 0.003611
HIERARCH ESO ISS AMBI TEMP 11.92
HIERARCH ESO ISS AMBI FWHM START 0.68
HIERARCH ESO ISS AMBI FWHM END 0.62