Exposure
ID
GRAVI.2025-08-02T05:14:24.244_1
Header ID
GRAVI.2025-08-02T05:14:24.244
Date updated
2025-08-02 05:25:49 UTC+0000
Release date
2026-08-02 05:25:49 UTC+0000
UTC Start
2025-08-02 05:14:24.244
UTC End
2025-08-02 05:17:04.244
MJD Start
60889.21833616
MJD End
60889.22018801185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0027619999999999997
Ambient temperature (°C)
10.22
Seeing (arcsec)
1.35
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 79.0590 78.9070 160.7000 161.5000
A0-J2 93.0330 92.4010 138.3000 139.2000
A0-K0 78.9510 77.9270 107.7050 108.3740
G1-J2 36.1580 35.6750 81.8000 82.1000
G1-K0 70.5420 70.1200 44.1480 44.2190
J2-K0 47.3840 47.3500 16.3550 16.6420
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 60889.21833616
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 79.059
HIERARCH ESO ISS PBL12 END 78.907
HIERARCH ESO ISS PBLA12 START 160.7
HIERARCH ESO ISS PBLA12 END 161.5
HIERARCH ESO ISS PBL13 START 93.033
HIERARCH ESO ISS PBL13 END 92.401
HIERARCH ESO ISS PBLA13 START 138.3
HIERARCH ESO ISS PBLA13 END 139.2
HIERARCH ESO ISS PBL14 START 78.951
HIERARCH ESO ISS PBL14 END 77.927
HIERARCH ESO ISS PBLA14 START 107.705
HIERARCH ESO ISS PBLA14 END 108.374
HIERARCH ESO ISS PBL23 START 36.158
HIERARCH ESO ISS PBL23 END 35.675
HIERARCH ESO ISS PBLA23 START 81.8
HIERARCH ESO ISS PBLA23 END 82.1
HIERARCH ESO ISS PBL24 START 70.542
HIERARCH ESO ISS PBL24 END 70.12
HIERARCH ESO ISS PBLA24 START 44.148
HIERARCH ESO ISS PBLA24 END 44.219
HIERARCH ESO ISS PBL34 START 47.384
HIERARCH ESO ISS PBL34 END 47.35
HIERARCH ESO ISS PBLA34 START 16.355
HIERARCH ESO ISS PBLA34 END 16.642
HIERARCH ESO ISS AMBI TAU0 START 0.002789
HIERARCH ESO ISS AMBI TAU0 END 0.002735
HIERARCH ESO ISS AMBI TEMP 10.22
HIERARCH ESO ISS AMBI FWHM START 1.4
HIERARCH ESO ISS AMBI FWHM END 1.3