Exposure
ID
GRAVI.2025-08-02T05:21:24.261_1
Header ID
GRAVI.2025-08-02T05:21:24.261
Date updated
2025-08-02 05:30:49 UTC+0000
Release date
2026-08-02 05:30:48 UTC+0000
UTC Start
2025-08-02 05:21:24.261
UTC End
2025-08-02 05:24:04.261
MJD Start
60889.22319747
MJD End
60889.22504932185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.00255
Ambient temperature (°C)
10.32
Seeing (arcsec)
1.4300000000000002
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 78.7080 78.5680 162.5000 163.3000
A0-J2 91.5530 90.9410 140.4000 141.3000
A0-K0 76.5290 75.5030 109.3050 110.0060
G1-J2 35.0110 34.5200 82.6000 82.9000
G1-K0 69.5380 69.1080 44.3070 44.3680
J2-K0 47.3030 47.2670 17.0310 17.3150
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 60889.22319747
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 78.708
HIERARCH ESO ISS PBL12 END 78.568
HIERARCH ESO ISS PBLA12 START 162.5
HIERARCH ESO ISS PBLA12 END 163.3
HIERARCH ESO ISS PBL13 START 91.553
HIERARCH ESO ISS PBL13 END 90.941
HIERARCH ESO ISS PBLA13 START 140.4
HIERARCH ESO ISS PBLA13 END 141.3
HIERARCH ESO ISS PBL14 START 76.529
HIERARCH ESO ISS PBL14 END 75.503
HIERARCH ESO ISS PBLA14 START 109.305
HIERARCH ESO ISS PBLA14 END 110.006
HIERARCH ESO ISS PBL23 START 35.011
HIERARCH ESO ISS PBL23 END 34.52
HIERARCH ESO ISS PBLA23 START 82.6
HIERARCH ESO ISS PBLA23 END 82.9
HIERARCH ESO ISS PBL24 START 69.538
HIERARCH ESO ISS PBL24 END 69.108
HIERARCH ESO ISS PBLA24 START 44.307
HIERARCH ESO ISS PBLA24 END 44.368
HIERARCH ESO ISS PBL34 START 47.303
HIERARCH ESO ISS PBL34 END 47.267
HIERARCH ESO ISS PBLA34 START 17.031
HIERARCH ESO ISS PBLA34 END 17.315
HIERARCH ESO ISS AMBI TAU0 START 0.002594
HIERARCH ESO ISS AMBI TAU0 END 0.002506
HIERARCH ESO ISS AMBI TEMP 10.32
HIERARCH ESO ISS AMBI FWHM START 1.58
HIERARCH ESO ISS AMBI FWHM END 1.28