Exposure
ID
GRAVI.2025-04-29T06:04:31.258_1
Header ID
GRAVI.2025-04-29T06:04:31.258
Date updated
2025-04-29 06:15:50 UTC+0000
Release date
2026-04-29 06:15:50 UTC+0000
UTC Start
2025-04-29 06:04:31.258
UTC End
2025-04-29 06:07:11.258
MJD Start
60794.25313956
MJD End
60794.25499141186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.00558
Ambient temperature (°C)
12.89
Seeing (arcsec)
0.53
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 84.7770 85.0980 105.0000 105.3000
A0-J2 123.2120 123.6150 80.6000 81.1000
A0-K0 125.0870 125.3290 58.7300 59.2210
G1-J2 57.7690 57.8220 43.4000 43.8000
G1-K0 90.3650 90.3510 16.0740 16.4680
J2-K0 47.1630 47.2020 341.9120 342.1910
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 60794.25313956
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 84.777
HIERARCH ESO ISS PBL12 END 85.098
HIERARCH ESO ISS PBLA12 START 105.0
HIERARCH ESO ISS PBLA12 END 105.3
HIERARCH ESO ISS PBL13 START 123.212
HIERARCH ESO ISS PBL13 END 123.615
HIERARCH ESO ISS PBLA13 START 80.6
HIERARCH ESO ISS PBLA13 END 81.1
HIERARCH ESO ISS PBL14 START 125.087
HIERARCH ESO ISS PBL14 END 125.329
HIERARCH ESO ISS PBLA14 START 58.73
HIERARCH ESO ISS PBLA14 END 59.221
HIERARCH ESO ISS PBL23 START 57.769
HIERARCH ESO ISS PBL23 END 57.822
HIERARCH ESO ISS PBLA23 START 43.4
HIERARCH ESO ISS PBLA23 END 43.8
HIERARCH ESO ISS PBL24 START 90.365
HIERARCH ESO ISS PBL24 END 90.351
HIERARCH ESO ISS PBLA24 START 16.074
HIERARCH ESO ISS PBLA24 END 16.468
HIERARCH ESO ISS PBL34 START 47.163
HIERARCH ESO ISS PBL34 END 47.202
HIERARCH ESO ISS PBLA34 START 341.912
HIERARCH ESO ISS PBLA34 END 342.191
HIERARCH ESO ISS AMBI TAU0 START 0.005927
HIERARCH ESO ISS AMBI TAU0 END 0.005233
HIERARCH ESO ISS AMBI TEMP 12.89
HIERARCH ESO ISS AMBI FWHM START 0.54
HIERARCH ESO ISS AMBI FWHM END 0.52