Exposure
ID
GRAVI.2025-08-28T01:17:54.246_1
Header ID
GRAVI.2025-08-28T01:17:54.246
Date updated
2025-08-28 01:30:59 UTC+0000
Release date
2026-08-28 01:30:59 UTC+0000
UTC Start
2025-08-28 01:17:54.246
UTC End
2025-08-28 01:20:34.246
MJD Start
60915.05410007
MJD End
60915.05595192186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002355
Ambient temperature (°C)
12.62
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 47.8960 47.8560 157.4000 157.7000
A0-J2 126.0290 125.6750 97.4000 97.6000
A0-J6 169.6540 169.6280 30.8970 31.1210
B5-J2 110.1810 109.9380 75.2000 75.5000
B5-J6 201.8260 201.8450 19.8930 20.1460
J2-J6 166.1030 166.0340 346.8180 347.1600
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 60915.05410007
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 47.896
HIERARCH ESO ISS PBL12 END 47.856
HIERARCH ESO ISS PBLA12 START 157.4
HIERARCH ESO ISS PBLA12 END 157.7
HIERARCH ESO ISS PBL13 START 126.029
HIERARCH ESO ISS PBL13 END 125.675
HIERARCH ESO ISS PBLA13 START 97.4
HIERARCH ESO ISS PBLA13 END 97.6
HIERARCH ESO ISS PBL14 START 169.654
HIERARCH ESO ISS PBL14 END 169.628
HIERARCH ESO ISS PBLA14 START 30.897
HIERARCH ESO ISS PBLA14 END 31.121
HIERARCH ESO ISS PBL23 START 110.181
HIERARCH ESO ISS PBL23 END 109.938
HIERARCH ESO ISS PBLA23 START 75.2
HIERARCH ESO ISS PBLA23 END 75.5
HIERARCH ESO ISS PBL24 START 201.826
HIERARCH ESO ISS PBL24 END 201.845
HIERARCH ESO ISS PBLA24 START 19.893
HIERARCH ESO ISS PBLA24 END 20.146
HIERARCH ESO ISS PBL34 START 166.103
HIERARCH ESO ISS PBL34 END 166.034
HIERARCH ESO ISS PBLA34 START 346.818
HIERARCH ESO ISS PBLA34 END 347.16
HIERARCH ESO ISS AMBI TAU0 START 0.002355
HIERARCH ESO ISS AMBI TAU0 END 0.002355
HIERARCH ESO ISS AMBI TEMP 12.62
HIERARCH ESO ISS AMBI FWHM START 1.35
HIERARCH ESO ISS AMBI FWHM END 1.35