Exposure
ID
GRAVI.2025-05-23T06:58:34.478_1
Header ID
GRAVI.2025-05-23T06:58:34.478
Date updated
2025-05-23 07:11:02 UTC+0000
Release date
2026-05-23 07:11:02 UTC+0000
UTC Start
2025-05-23 06:58:34.478
UTC End
2025-05-23 07:01:46.478
MJD Start
60818.29067683
MJD End
60818.29289905223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.003713
Ambient temperature (°C)
13.77
Seeing (arcsec)
0.595
Observation
ID
67545
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
50235
Name
BD-154915
RA
274.607228
DEC
-15.30366
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 68.3430 68.3230 271.7000 271.9000
K0-D0 95.8760 95.9310 251.4000 251.6000
K0-J3 55.9450 55.8840 332.7540 333.1210
G2-D0 39.6470 39.6910 214.6000 215.0000
G2-J3 64.0630 64.1380 41.8040 42.1240
D0-J3 103.5180 103.6390 39.0650 39.3920
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 60818.29067683
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME BD-15 4915
HIERARCH ESO INS SOBJ NAME BD-154915
RA 274.607228
DEC -15.30366
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 68.343
HIERARCH ESO ISS PBL12 END 68.323
HIERARCH ESO ISS PBLA12 START 271.7
HIERARCH ESO ISS PBLA12 END 271.9
HIERARCH ESO ISS PBL13 START 95.876
HIERARCH ESO ISS PBL13 END 95.931
HIERARCH ESO ISS PBLA13 START 251.4
HIERARCH ESO ISS PBLA13 END 251.6
HIERARCH ESO ISS PBL14 START 55.945
HIERARCH ESO ISS PBL14 END 55.884
HIERARCH ESO ISS PBLA14 START 332.754
HIERARCH ESO ISS PBLA14 END 333.121
HIERARCH ESO ISS PBL23 START 39.647
HIERARCH ESO ISS PBL23 END 39.691
HIERARCH ESO ISS PBLA23 START 214.6
HIERARCH ESO ISS PBLA23 END 215.0
HIERARCH ESO ISS PBL24 START 64.063
HIERARCH ESO ISS PBL24 END 64.138
HIERARCH ESO ISS PBLA24 START 41.804
HIERARCH ESO ISS PBLA24 END 42.124
HIERARCH ESO ISS PBL34 START 103.518
HIERARCH ESO ISS PBL34 END 103.639
HIERARCH ESO ISS PBLA34 START 39.065
HIERARCH ESO ISS PBLA34 END 39.392
HIERARCH ESO ISS AMBI TAU0 START 0.003348
HIERARCH ESO ISS AMBI TAU0 END 0.004078
HIERARCH ESO ISS AMBI TEMP 13.77
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.55