Exposure
ID
GRAVI.2025-06-20T04:54:57.376_1
Header ID
GRAVI.2025-06-20T04:54:57.376
Date updated
2025-06-20 05:06:00 UTC+0000
Release date
2026-06-20 05:05:59 UTC+0000
UTC Start
2025-06-20 04:54:57.376
UTC End
2025-06-20 04:58:09.376
MJD Start
60846.20483074
MJD End
60846.20705296222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.003126
Ambient temperature (°C)
12.79
Seeing (arcsec)
0.9750000000000001
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 68.2490 68.1900 273.3000 273.7000
K0-D0 95.7300 95.6270 252.7000 253.1000
K0-J3 56.5410 56.5490 334.4360 334.8540
G2-D0 39.8570 39.8280 215.7000 216.1000
G2-J3 64.2920 64.2370 42.8700 43.2550
D0-J3 103.9560 103.8730 40.1260 40.5090
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 60846.20483074
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 68.249
HIERARCH ESO ISS PBL12 END 68.19
HIERARCH ESO ISS PBLA12 START 273.3
HIERARCH ESO ISS PBLA12 END 273.7
HIERARCH ESO ISS PBL13 START 95.73
HIERARCH ESO ISS PBL13 END 95.627
HIERARCH ESO ISS PBLA13 START 252.7
HIERARCH ESO ISS PBLA13 END 253.1
HIERARCH ESO ISS PBL14 START 56.541
HIERARCH ESO ISS PBL14 END 56.549
HIERARCH ESO ISS PBLA14 START 334.436
HIERARCH ESO ISS PBLA14 END 334.854
HIERARCH ESO ISS PBL23 START 39.857
HIERARCH ESO ISS PBL23 END 39.828
HIERARCH ESO ISS PBLA23 START 215.7
HIERARCH ESO ISS PBLA23 END 216.1
HIERARCH ESO ISS PBL24 START 64.292
HIERARCH ESO ISS PBL24 END 64.237
HIERARCH ESO ISS PBLA24 START 42.87
HIERARCH ESO ISS PBLA24 END 43.255
HIERARCH ESO ISS PBL34 START 103.956
HIERARCH ESO ISS PBL34 END 103.873
HIERARCH ESO ISS PBLA34 START 40.126
HIERARCH ESO ISS PBLA34 END 40.509
HIERARCH ESO ISS AMBI TAU0 START 0.003521
HIERARCH ESO ISS AMBI TAU0 END 0.002731
HIERARCH ESO ISS AMBI TEMP 12.79
HIERARCH ESO ISS AMBI FWHM START 0.83
HIERARCH ESO ISS AMBI FWHM END 1.12