Exposure
ID
GRAVI.2025-06-21T05:25:43.402_1
Header ID
GRAVI.2025-06-21T05:25:43.402
Date updated
2025-06-21 05:41:33 UTC+0000
Release date
2026-06-21 05:41:33 UTC+0000
UTC Start
2025-06-21 05:25:43.402
UTC End
2025-06-21 05:28:55.402
MJD Start
60847.22619678
MJD End
60847.228419002226
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0058255
Ambient temperature (°C)
12.09
Seeing (arcsec)
0.52
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 68.0010 67.8860 273.1000 273.3000
K0-D0 95.9050 95.8390 252.8000 253.0000
K0-J3 55.5730 55.5030 334.9420 335.3410
G2-D0 39.8640 39.8910 216.5000 216.8000
G2-J3 64.4030 64.4390 43.5430 43.8190
D0-J3 104.0800 104.1440 40.8450 41.1290
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 60847.22619678
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 68.001
HIERARCH ESO ISS PBL12 END 67.886
HIERARCH ESO ISS PBLA12 START 273.1
HIERARCH ESO ISS PBLA12 END 273.3
HIERARCH ESO ISS PBL13 START 95.905
HIERARCH ESO ISS PBL13 END 95.839
HIERARCH ESO ISS PBLA13 START 252.8
HIERARCH ESO ISS PBLA13 END 253.0
HIERARCH ESO ISS PBL14 START 55.573
HIERARCH ESO ISS PBL14 END 55.503
HIERARCH ESO ISS PBLA14 START 334.942
HIERARCH ESO ISS PBLA14 END 335.341
HIERARCH ESO ISS PBL23 START 39.864
HIERARCH ESO ISS PBL23 END 39.891
HIERARCH ESO ISS PBLA23 START 216.5
HIERARCH ESO ISS PBLA23 END 216.8
HIERARCH ESO ISS PBL24 START 64.403
HIERARCH ESO ISS PBL24 END 64.439
HIERARCH ESO ISS PBLA24 START 43.543
HIERARCH ESO ISS PBLA24 END 43.819
HIERARCH ESO ISS PBL34 START 104.08
HIERARCH ESO ISS PBL34 END 104.144
HIERARCH ESO ISS PBLA34 START 40.845
HIERARCH ESO ISS PBLA34 END 41.129
HIERARCH ESO ISS AMBI TAU0 START 0.005524
HIERARCH ESO ISS AMBI TAU0 END 0.006127
HIERARCH ESO ISS AMBI TEMP 12.09
HIERARCH ESO ISS AMBI FWHM START 0.5
HIERARCH ESO ISS AMBI FWHM END 0.54