Exposure
ID
GRAVI.2025-04-06T08:10:18.385_1
Header ID
GRAVI.2025-04-06T08:10:18.385
Date updated
2025-04-06 08:25:46 UTC+0000
Release date
2026-04-06 08:25:46 UTC+0000
UTC Start
2025-04-06 08:10:18.385
UTC End
2025-04-06 08:13:30.385
MJD Start
60771.34049057
MJD End
60771.342712792226
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0046440000000000006
Ambient temperature (°C)
13.28
Seeing (arcsec)
0.54
Observation
ID
66057
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
49176
Name
BD-154915
RA
274.604925
DEC
-15.30366
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 24.8730 24.9220 135.3000 135.4000
A0-D0 28.3420 28.5410 60.7000 61.2000
A0-C1 21.1500 21.2650 109.7860 109.9190
B2-D0 32.3520 32.3870 12.9000 13.4000
B2-C1 10.7780 10.7900 12.8260 13.3450
D0-C1 21.5740 21.5980 192.8880 193.4070
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 60771.34049057
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME BD-15 4915
HIERARCH ESO INS SOBJ NAME BD-154915
RA 274.604925
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 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 24.873
HIERARCH ESO ISS PBL12 END 24.922
HIERARCH ESO ISS PBLA12 START 135.3
HIERARCH ESO ISS PBLA12 END 135.4
HIERARCH ESO ISS PBL13 START 28.342
HIERARCH ESO ISS PBL13 END 28.541
HIERARCH ESO ISS PBLA13 START 60.7
HIERARCH ESO ISS PBLA13 END 61.2
HIERARCH ESO ISS PBL14 START 21.15
HIERARCH ESO ISS PBL14 END 21.265
HIERARCH ESO ISS PBLA14 START 109.786
HIERARCH ESO ISS PBLA14 END 109.919
HIERARCH ESO ISS PBL23 START 32.352
HIERARCH ESO ISS PBL23 END 32.387
HIERARCH ESO ISS PBLA23 START 12.9
HIERARCH ESO ISS PBLA23 END 13.4
HIERARCH ESO ISS PBL24 START 10.778
HIERARCH ESO ISS PBL24 END 10.79
HIERARCH ESO ISS PBLA24 START 12.826
HIERARCH ESO ISS PBLA24 END 13.345
HIERARCH ESO ISS PBL34 START 21.574
HIERARCH ESO ISS PBL34 END 21.598
HIERARCH ESO ISS PBLA34 START 192.888
HIERARCH ESO ISS PBLA34 END 193.407
HIERARCH ESO ISS AMBI TAU0 START 0.004296
HIERARCH ESO ISS AMBI TAU0 END 0.004992
HIERARCH ESO ISS AMBI TEMP 13.28
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.53