Exposure
ID
GRAVI.2025-05-26T03:51:44.213_1
Header ID
GRAVI.2025-05-26T03:51:44.213
Date updated
2025-05-26 04:01:12 UTC+0000
Release date
2026-05-26 04:01:12 UTC+0000
UTC Start
2025-05-26 03:51:44.213
UTC End
2025-05-26 03:54:24.213
MJD Start
60821.16092839
MJD End
60821.16278024186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0036145
Ambient temperature (°C)
11.93
Seeing (arcsec)
0.625
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 81.4690 81.8730 101.7000 102.1000
A0-J2 119.0270 119.5400 76.4000 76.9000
A0-K0 122.5390 122.8520 54.1300 54.6590
G1-J2 57.1970 57.2680 38.9000 39.4000
G1-K0 90.4490 90.4430 12.4660 12.8740
J2-K0 46.7630 46.8120 339.4900 339.7530
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 60821.16092839
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 81.469
HIERARCH ESO ISS PBL12 END 81.873
HIERARCH ESO ISS PBLA12 START 101.7
HIERARCH ESO ISS PBLA12 END 102.1
HIERARCH ESO ISS PBL13 START 119.027
HIERARCH ESO ISS PBL13 END 119.54
HIERARCH ESO ISS PBLA13 START 76.4
HIERARCH ESO ISS PBLA13 END 76.9
HIERARCH ESO ISS PBL14 START 122.539
HIERARCH ESO ISS PBL14 END 122.852
HIERARCH ESO ISS PBLA14 START 54.13
HIERARCH ESO ISS PBLA14 END 54.659
HIERARCH ESO ISS PBL23 START 57.197
HIERARCH ESO ISS PBL23 END 57.268
HIERARCH ESO ISS PBLA23 START 38.9
HIERARCH ESO ISS PBLA23 END 39.4
HIERARCH ESO ISS PBL24 START 90.449
HIERARCH ESO ISS PBL24 END 90.443
HIERARCH ESO ISS PBLA24 START 12.466
HIERARCH ESO ISS PBLA24 END 12.874
HIERARCH ESO ISS PBL34 START 46.763
HIERARCH ESO ISS PBL34 END 46.812
HIERARCH ESO ISS PBLA34 START 339.49
HIERARCH ESO ISS PBLA34 END 339.753
HIERARCH ESO ISS AMBI TAU0 START 0.003611
HIERARCH ESO ISS AMBI TAU0 END 0.003618
HIERARCH ESO ISS AMBI TEMP 11.93
HIERARCH ESO ISS AMBI FWHM START 0.62
HIERARCH ESO ISS AMBI FWHM END 0.63