Exposure
ID
GRAVI.2025-08-28T01:24:39.263_1
Header ID
GRAVI.2025-08-28T01:24:39.263
Date updated
2025-08-28 01:36:05 UTC+0000
Release date
2026-08-28 01:36:05 UTC+0000
UTC Start
2025-08-28 01:24:39.263
UTC End
2025-08-28 01:27:19.263
MJD Start
60915.05878777
MJD End
60915.06063962186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002355
Ambient temperature (°C)
12.59
Seeing (arcsec)
1.35
Observation
ID
70136
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
52039
Name
BD-194849
RA
271.883589
DEC
-19.294
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 47.8030 47.7620 158.2000 158.6000
A0-J2 125.1910 124.7930 98.0000 98.2000
A0-J6 169.5840 169.5410 31.4110 31.6340
B5-J2 109.6010 109.3200 75.7000 75.9000
B5-J6 201.8650 201.8760 20.4760 20.7300
J2-J6 165.9460 165.8780 347.6100 347.9650
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 60915.05878777
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME BD-19 4849
HIERARCH ESO INS SOBJ NAME BD-194849
RA 271.883589
DEC -19.294
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 47.803
HIERARCH ESO ISS PBL12 END 47.762
HIERARCH ESO ISS PBLA12 START 158.2
HIERARCH ESO ISS PBLA12 END 158.6
HIERARCH ESO ISS PBL13 START 125.191
HIERARCH ESO ISS PBL13 END 124.793
HIERARCH ESO ISS PBLA13 START 98.0
HIERARCH ESO ISS PBLA13 END 98.2
HIERARCH ESO ISS PBL14 START 169.584
HIERARCH ESO ISS PBL14 END 169.541
HIERARCH ESO ISS PBLA14 START 31.411
HIERARCH ESO ISS PBLA14 END 31.634
HIERARCH ESO ISS PBL23 START 109.601
HIERARCH ESO ISS PBL23 END 109.32
HIERARCH ESO ISS PBLA23 START 75.7
HIERARCH ESO ISS PBLA23 END 75.9
HIERARCH ESO ISS PBL24 START 201.865
HIERARCH ESO ISS PBL24 END 201.876
HIERARCH ESO ISS PBLA24 START 20.476
HIERARCH ESO ISS PBLA24 END 20.73
HIERARCH ESO ISS PBL34 START 165.946
HIERARCH ESO ISS PBL34 END 165.878
HIERARCH ESO ISS PBLA34 START 347.61
HIERARCH ESO ISS PBLA34 END 347.965
HIERARCH ESO ISS AMBI TAU0 START 0.002355
HIERARCH ESO ISS AMBI TAU0 END 0.002355
HIERARCH ESO ISS AMBI TEMP 12.59
HIERARCH ESO ISS AMBI FWHM START 1.35
HIERARCH ESO ISS AMBI FWHM END 1.35