Exposure
ID
GRAVI.2025-05-20T08:45:26.148_1
Header ID
GRAVI.2025-05-20T08:45:26.148
Date updated
2025-05-20 09:00:48 UTC+0000
Release date
2026-05-20 09:00:48 UTC+0000
UTC Start
2025-05-20 08:45:26.148
UTC End
2025-05-20 08:48:38.148
MJD Start
60815.36488597
MJD End
60815.36710819222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.009311
Ambient temperature (°C)
13.75
Seeing (arcsec)
0.49
Observation
ID
66035
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
49156
Name
KW_Sgr
RA
268.000514
DEC
-28.02238
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 24.8550 24.8310 159.0000 159.5000
A0-D0 28.3550 28.1430 84.3000 84.7000
A0-C1 21.1290 21.0440 133.4350 134.0900
B2-D0 32.3900 32.3020 36.6000 36.8000
B2-C1 10.7900 10.7610 36.5250 36.7530
D0-C1 21.6000 21.5410 216.5870 216.8140
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 60815.36488597
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME V KW Sgr
HIERARCH ESO INS SOBJ NAME KW_Sgr
RA 268.000514
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 A0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 24.855
HIERARCH ESO ISS PBL12 END 24.831
HIERARCH ESO ISS PBLA12 START 159.0
HIERARCH ESO ISS PBLA12 END 159.5
HIERARCH ESO ISS PBL13 START 28.355
HIERARCH ESO ISS PBL13 END 28.143
HIERARCH ESO ISS PBLA13 START 84.3
HIERARCH ESO ISS PBLA13 END 84.7
HIERARCH ESO ISS PBL14 START 21.129
HIERARCH ESO ISS PBL14 END 21.044
HIERARCH ESO ISS PBLA14 START 133.435
HIERARCH ESO ISS PBLA14 END 134.09
HIERARCH ESO ISS PBL23 START 32.39
HIERARCH ESO ISS PBL23 END 32.302
HIERARCH ESO ISS PBLA23 START 36.6
HIERARCH ESO ISS PBLA23 END 36.8
HIERARCH ESO ISS PBL24 START 10.79
HIERARCH ESO ISS PBL24 END 10.761
HIERARCH ESO ISS PBLA24 START 36.525
HIERARCH ESO ISS PBLA24 END 36.753
HIERARCH ESO ISS PBL34 START 21.6
HIERARCH ESO ISS PBL34 END 21.541
HIERARCH ESO ISS PBLA34 START 216.587
HIERARCH ESO ISS PBLA34 END 216.814
HIERARCH ESO ISS AMBI TAU0 START 0.009219
HIERARCH ESO ISS AMBI TAU0 END 0.009403
HIERARCH ESO ISS AMBI TEMP 13.75
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.46