Exposure
ID
GRAVI.2025-05-26T04:01:47.238_1
Header ID
GRAVI.2025-05-26T04:01:47.238
Date updated
2025-05-26 04:11:28 UTC+0000
Release date
2026-05-26 04:11:28 UTC+0000
UTC Start
2025-05-26 04:01:47.238
UTC End
2025-05-26 04:04:27.238
MJD Start
60821.16790785
MJD End
60821.16975970186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0035164999999999997
Ambient temperature (°C)
11.9
Seeing (arcsec)
0.71
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 82.8040 83.1780 102.9000 103.3000
A0-J2 120.7190 121.1940 78.0000 78.5000
A0-K0 123.5730 123.8630 55.9030 56.4180
G1-J2 57.4330 57.4980 40.6000 41.1000
G1-K0 90.4260 90.4170 13.8390 14.2420
J2-K0 46.9250 46.9700 340.3840 340.6520
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 60821.16790785
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 82.804
HIERARCH ESO ISS PBL12 END 83.178
HIERARCH ESO ISS PBLA12 START 102.9
HIERARCH ESO ISS PBLA12 END 103.3
HIERARCH ESO ISS PBL13 START 120.719
HIERARCH ESO ISS PBL13 END 121.194
HIERARCH ESO ISS PBLA13 START 78.0
HIERARCH ESO ISS PBLA13 END 78.5
HIERARCH ESO ISS PBL14 START 123.573
HIERARCH ESO ISS PBL14 END 123.863
HIERARCH ESO ISS PBLA14 START 55.903
HIERARCH ESO ISS PBLA14 END 56.418
HIERARCH ESO ISS PBL23 START 57.433
HIERARCH ESO ISS PBL23 END 57.498
HIERARCH ESO ISS PBLA23 START 40.6
HIERARCH ESO ISS PBLA23 END 41.1
HIERARCH ESO ISS PBL24 START 90.426
HIERARCH ESO ISS PBL24 END 90.417
HIERARCH ESO ISS PBLA24 START 13.839
HIERARCH ESO ISS PBLA24 END 14.242
HIERARCH ESO ISS PBL34 START 46.925
HIERARCH ESO ISS PBL34 END 46.97
HIERARCH ESO ISS PBLA34 START 340.384
HIERARCH ESO ISS PBLA34 END 340.652
HIERARCH ESO ISS AMBI TAU0 START 0.003069
HIERARCH ESO ISS AMBI TAU0 END 0.003964
HIERARCH ESO ISS AMBI TEMP 11.9
HIERARCH ESO ISS AMBI FWHM START 0.77
HIERARCH ESO ISS AMBI FWHM END 0.65