Exposure
ID
GRAVI.2025-04-29T06:14:31.284_1
Header ID
GRAVI.2025-04-29T06:14:31.284
Date updated
2025-04-29 06:25:46 UTC+0000
Release date
2026-04-29 06:25:46 UTC+0000
UTC Start
2025-04-29 06:14:31.284
UTC End
2025-04-29 06:17:11.284
MJD Start
60794.2600843
MJD End
60794.26193615185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.005807
Ambient temperature (°C)
12.71
Seeing (arcsec)
0.48
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 85.8220 86.1110 106.2000 106.6000
A0-J2 124.5180 124.8760 82.1000 82.6000
A0-K0 125.8650 126.0740 60.3710 60.8500
G1-J2 57.9340 57.9770 45.0000 45.4000
G1-K0 90.3130 90.2940 17.3950 17.7830
J2-K0 47.2900 47.3260 342.8590 343.1440
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 60794.2600843
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 85.822
HIERARCH ESO ISS PBL12 END 86.111
HIERARCH ESO ISS PBLA12 START 106.2
HIERARCH ESO ISS PBLA12 END 106.6
HIERARCH ESO ISS PBL13 START 124.518
HIERARCH ESO ISS PBL13 END 124.876
HIERARCH ESO ISS PBLA13 START 82.1
HIERARCH ESO ISS PBLA13 END 82.6
HIERARCH ESO ISS PBL14 START 125.865
HIERARCH ESO ISS PBL14 END 126.074
HIERARCH ESO ISS PBLA14 START 60.371
HIERARCH ESO ISS PBLA14 END 60.85
HIERARCH ESO ISS PBL23 START 57.934
HIERARCH ESO ISS PBL23 END 57.977
HIERARCH ESO ISS PBLA23 START 45.0
HIERARCH ESO ISS PBLA23 END 45.4
HIERARCH ESO ISS PBL24 START 90.313
HIERARCH ESO ISS PBL24 END 90.294
HIERARCH ESO ISS PBLA24 START 17.395
HIERARCH ESO ISS PBLA24 END 17.783
HIERARCH ESO ISS PBL34 START 47.29
HIERARCH ESO ISS PBL34 END 47.326
HIERARCH ESO ISS PBLA34 START 342.859
HIERARCH ESO ISS PBLA34 END 343.144
HIERARCH ESO ISS AMBI TAU0 START 0.006134
HIERARCH ESO ISS AMBI TAU0 END 0.00548
HIERARCH ESO ISS AMBI TEMP 12.71
HIERARCH ESO ISS AMBI FWHM START 0.46
HIERARCH ESO ISS AMBI FWHM END 0.5