Exposure
ID
GRAVI.2025-08-02T05:24:42.270_1
Header ID
GRAVI.2025-08-02T05:24:42.270
Date updated
2025-08-02 05:35:50 UTC+0000
Release date
2026-08-02 05:35:50 UTC+0000
UTC Start
2025-08-02 05:24:42.270
UTC End
2025-08-02 05:27:22.270
MJD Start
60889.22548924
MJD End
60889.22734109186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002646
Ambient temperature (°C)
10.36
Seeing (arcsec)
1.295
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 78.5540 78.4190 163.3000 164.1000
A0-J2 90.8760 90.2700 141.4000 142.3000
A0-K0 75.3920 74.3570 110.0800 110.8000
G1-J2 34.4670 33.9690 82.9000 83.2000
G1-K0 69.0620 68.6240 44.3720 44.4250
J2-K0 47.2630 47.2260 17.3430 17.6250
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 60889.22548924
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 78.554
HIERARCH ESO ISS PBL12 END 78.419
HIERARCH ESO ISS PBLA12 START 163.3
HIERARCH ESO ISS PBLA12 END 164.1
HIERARCH ESO ISS PBL13 START 90.876
HIERARCH ESO ISS PBL13 END 90.27
HIERARCH ESO ISS PBLA13 START 141.4
HIERARCH ESO ISS PBLA13 END 142.3
HIERARCH ESO ISS PBL14 START 75.392
HIERARCH ESO ISS PBL14 END 74.357
HIERARCH ESO ISS PBLA14 START 110.08
HIERARCH ESO ISS PBLA14 END 110.8
HIERARCH ESO ISS PBL23 START 34.467
HIERARCH ESO ISS PBL23 END 33.969
HIERARCH ESO ISS PBLA23 START 82.9
HIERARCH ESO ISS PBLA23 END 83.2
HIERARCH ESO ISS PBL24 START 69.062
HIERARCH ESO ISS PBL24 END 68.624
HIERARCH ESO ISS PBLA24 START 44.372
HIERARCH ESO ISS PBLA24 END 44.425
HIERARCH ESO ISS PBL34 START 47.263
HIERARCH ESO ISS PBL34 END 47.226
HIERARCH ESO ISS PBLA34 START 17.343
HIERARCH ESO ISS PBLA34 END 17.625
HIERARCH ESO ISS AMBI TAU0 START 0.002506
HIERARCH ESO ISS AMBI TAU0 END 0.002786
HIERARCH ESO ISS AMBI TEMP 10.36
HIERARCH ESO ISS AMBI FWHM START 1.28
HIERARCH ESO ISS AMBI FWHM END 1.31