Exposure
ID
GRAVI.2025-05-20T08:28:59.106_1
Header ID
GRAVI.2025-05-20T08:28:59.106
Date updated
2025-05-20 08:41:00 UTC+0000
Release date
2026-05-20 08:41:00 UTC+0000
UTC Start
2025-05-20 08:28:59.106
UTC End
2025-05-20 08:32:11.106
MJD Start
60815.35346187
MJD End
60815.355684092225
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0095455
Ambient temperature (°C)
13.87
Seeing (arcsec)
0.47
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 24.9610 24.9370 156.4000 157.0000
A0-D0 29.2340 29.0460 82.6000 83.0000
A0-C1 21.4860 21.4080 130.6330 131.2480
B2-D0 32.7450 32.6700 35.5000 35.7000
B2-C1 10.9080 10.8830 35.4480 35.7000
D0-C1 21.8370 21.7860 215.5100 215.7620
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 60815.35346187
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 24.961
HIERARCH ESO ISS PBL12 END 24.937
HIERARCH ESO ISS PBLA12 START 156.4
HIERARCH ESO ISS PBLA12 END 157.0
HIERARCH ESO ISS PBL13 START 29.234
HIERARCH ESO ISS PBL13 END 29.046
HIERARCH ESO ISS PBLA13 START 82.6
HIERARCH ESO ISS PBLA13 END 83.0
HIERARCH ESO ISS PBL14 START 21.486
HIERARCH ESO ISS PBL14 END 21.408
HIERARCH ESO ISS PBLA14 START 130.633
HIERARCH ESO ISS PBLA14 END 131.248
HIERARCH ESO ISS PBL23 START 32.745
HIERARCH ESO ISS PBL23 END 32.67
HIERARCH ESO ISS PBLA23 START 35.5
HIERARCH ESO ISS PBLA23 END 35.7
HIERARCH ESO ISS PBL24 START 10.908
HIERARCH ESO ISS PBL24 END 10.883
HIERARCH ESO ISS PBLA24 START 35.448
HIERARCH ESO ISS PBLA24 END 35.7
HIERARCH ESO ISS PBL34 START 21.837
HIERARCH ESO ISS PBL34 END 21.786
HIERARCH ESO ISS PBLA34 START 215.51
HIERARCH ESO ISS PBLA34 END 215.762
HIERARCH ESO ISS AMBI TAU0 START 0.009336
HIERARCH ESO ISS AMBI TAU0 END 0.009755
HIERARCH ESO ISS AMBI TEMP 13.87
HIERARCH ESO ISS AMBI FWHM START 0.43
HIERARCH ESO ISS AMBI FWHM END 0.51