Exposure
ID
GRAVI.2025-08-28T01:14:36.238_1
Header ID
GRAVI.2025-08-28T01:14:36.238
Date updated
2025-08-28 01:25:57 UTC+0000
Release date
2026-08-28 01:25:57 UTC+0000
UTC Start
2025-08-28 01:14:36.238
UTC End
2025-08-28 01:17:16.238
MJD Start
60915.05180831
MJD End
60915.05366016186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002355
Ambient temperature (°C)
12.6
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 47.9410 47.9010 157.0000 157.3000
A0-J2 126.4040 126.0700 97.1000 97.3000
A0-J6 169.6750 169.6560 30.6360 30.8640
B5-J2 110.4360 110.2090 75.0000 75.2000
B5-J6 201.8020 201.8240 19.6000 19.8560
J2-J6 166.1810 166.1110 346.4320 346.7710
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 60915.05180831
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 47.941
HIERARCH ESO ISS PBL12 END 47.901
HIERARCH ESO ISS PBLA12 START 157.0
HIERARCH ESO ISS PBLA12 END 157.3
HIERARCH ESO ISS PBL13 START 126.404
HIERARCH ESO ISS PBL13 END 126.07
HIERARCH ESO ISS PBLA13 START 97.1
HIERARCH ESO ISS PBLA13 END 97.3
HIERARCH ESO ISS PBL14 START 169.675
HIERARCH ESO ISS PBL14 END 169.656
HIERARCH ESO ISS PBLA14 START 30.636
HIERARCH ESO ISS PBLA14 END 30.864
HIERARCH ESO ISS PBL23 START 110.436
HIERARCH ESO ISS PBL23 END 110.209
HIERARCH ESO ISS PBLA23 START 75.0
HIERARCH ESO ISS PBLA23 END 75.2
HIERARCH ESO ISS PBL24 START 201.802
HIERARCH ESO ISS PBL24 END 201.824
HIERARCH ESO ISS PBLA24 START 19.6
HIERARCH ESO ISS PBLA24 END 19.856
HIERARCH ESO ISS PBL34 START 166.181
HIERARCH ESO ISS PBL34 END 166.111
HIERARCH ESO ISS PBLA34 START 346.432
HIERARCH ESO ISS PBLA34 END 346.771
HIERARCH ESO ISS AMBI TAU0 START 0.002355
HIERARCH ESO ISS AMBI TAU0 END 0.002355
HIERARCH ESO ISS AMBI TEMP 12.6
HIERARCH ESO ISS AMBI FWHM START 1.35
HIERARCH ESO ISS AMBI FWHM END 1.35