Exposure
ID
GRAVI.2025-08-02T05:11:09.236_1
Header ID
GRAVI.2025-08-02T05:11:09.236
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 05:11:09.236
UTC End
2025-08-02 05:13:49.236
MJD Start
60889.21607912
MJD End
60889.217930971856
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002621
Ambient temperature (°C)
10.29
Seeing (arcsec)
1.315
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 79.2320 79.0760 159.9000 160.7000
A0-J2 93.7360 93.1010 137.4000 138.2000
A0-K0 80.0730 79.0600 106.9850 107.6370
G1-J2 36.6850 36.2090 81.5000 81.8000
G1-K0 71.0030 70.5870 44.0650 44.1430
J2-K0 47.4200 47.3870 16.0360 16.3260
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 60889.21607912
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 79.232
HIERARCH ESO ISS PBL12 END 79.076
HIERARCH ESO ISS PBLA12 START 159.9
HIERARCH ESO ISS PBLA12 END 160.7
HIERARCH ESO ISS PBL13 START 93.736
HIERARCH ESO ISS PBL13 END 93.101
HIERARCH ESO ISS PBLA13 START 137.4
HIERARCH ESO ISS PBLA13 END 138.2
HIERARCH ESO ISS PBL14 START 80.073
HIERARCH ESO ISS PBL14 END 79.06
HIERARCH ESO ISS PBLA14 START 106.985
HIERARCH ESO ISS PBLA14 END 107.637
HIERARCH ESO ISS PBL23 START 36.685
HIERARCH ESO ISS PBL23 END 36.209
HIERARCH ESO ISS PBLA23 START 81.5
HIERARCH ESO ISS PBLA23 END 81.8
HIERARCH ESO ISS PBL24 START 71.003
HIERARCH ESO ISS PBL24 END 70.587
HIERARCH ESO ISS PBLA24 START 44.065
HIERARCH ESO ISS PBLA24 END 44.143
HIERARCH ESO ISS PBL34 START 47.42
HIERARCH ESO ISS PBL34 END 47.387
HIERARCH ESO ISS PBLA34 START 16.036
HIERARCH ESO ISS PBLA34 END 16.326
HIERARCH ESO ISS AMBI TAU0 START 0.002384
HIERARCH ESO ISS AMBI TAU0 END 0.002858
HIERARCH ESO ISS AMBI TEMP 10.29
HIERARCH ESO ISS AMBI FWHM START 1.44
HIERARCH ESO ISS AMBI FWHM END 1.19