Exposure
ID
GRAVI.2025-06-20T04:46:48.355_1
Header ID
GRAVI.2025-06-20T04:46:48.355
Date updated
2025-06-20 05:01:00 UTC+0000
Release date
2026-06-20 05:00:59 UTC+0000
UTC Start
2025-06-20 04:46:48.355
UTC End
2025-06-20 04:50:00.355
MJD Start
60846.19917077
MJD End
60846.201392992225
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0037125
Ambient temperature (°C)
12.86
Seeing (arcsec)
0.81
Observation
ID
68168
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
50673
Name
KW_Sgr
RA
268.00303
DEC
-28.02238
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 68.3310 68.3020 272.3000 272.7000
K0-D0 95.8940 95.8300 251.8000 252.2000
K0-J3 56.5130 56.5270 333.5250 333.9340
G2-D0 39.9090 39.8870 214.8000 215.2000
G2-J3 64.3900 64.3490 41.9970 42.3950
D0-J3 104.1060 104.0440 39.2570 39.6530
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 60846.19917077
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME V KW Sgr
HIERARCH ESO INS SOBJ NAME KW_Sgr
RA 268.00303
DEC -28.02238
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 68.331
HIERARCH ESO ISS PBL12 END 68.302
HIERARCH ESO ISS PBLA12 START 272.3
HIERARCH ESO ISS PBLA12 END 272.7
HIERARCH ESO ISS PBL13 START 95.894
HIERARCH ESO ISS PBL13 END 95.83
HIERARCH ESO ISS PBLA13 START 251.8
HIERARCH ESO ISS PBLA13 END 252.2
HIERARCH ESO ISS PBL14 START 56.513
HIERARCH ESO ISS PBL14 END 56.527
HIERARCH ESO ISS PBLA14 START 333.525
HIERARCH ESO ISS PBLA14 END 333.934
HIERARCH ESO ISS PBL23 START 39.909
HIERARCH ESO ISS PBL23 END 39.887
HIERARCH ESO ISS PBLA23 START 214.8
HIERARCH ESO ISS PBLA23 END 215.2
HIERARCH ESO ISS PBL24 START 64.39
HIERARCH ESO ISS PBL24 END 64.349
HIERARCH ESO ISS PBLA24 START 41.997
HIERARCH ESO ISS PBLA24 END 42.395
HIERARCH ESO ISS PBL34 START 104.106
HIERARCH ESO ISS PBL34 END 104.044
HIERARCH ESO ISS PBLA34 START 39.257
HIERARCH ESO ISS PBLA34 END 39.653
HIERARCH ESO ISS AMBI TAU0 START 0.003653
HIERARCH ESO ISS AMBI TAU0 END 0.003772
HIERARCH ESO ISS AMBI TEMP 12.86
HIERARCH ESO ISS AMBI FWHM START 0.75
HIERARCH ESO ISS AMBI FWHM END 0.87