Exposure
ID
GRAVI.2025-08-28T01:27:54.272_1
Header ID
GRAVI.2025-08-28T01:27:54.272
Date updated
2025-08-28 01:41:03 UTC+0000
Release date
2026-08-28 01:41:03 UTC+0000
UTC Start
2025-08-28 01:27:54.272
UTC End
2025-08-28 01:30:34.272
MJD Start
60915.06104481
MJD End
60915.06289666185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002355
Ambient temperature (°C)
12.61
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 47.7580 47.7160 158.6000 159.0000
A0-J2 124.7520 124.3340 98.3000 98.5000
A0-J6 169.5370 169.4860 31.6560 31.8740
B5-J2 109.2910 108.9930 76.0000 76.2000
B5-J6 201.8770 201.8840 20.7560 21.0060
J2-J6 165.8710 165.8040 348.0000 348.3570
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 60915.06104481
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 47.758
HIERARCH ESO ISS PBL12 END 47.716
HIERARCH ESO ISS PBLA12 START 158.6
HIERARCH ESO ISS PBLA12 END 159.0
HIERARCH ESO ISS PBL13 START 124.752
HIERARCH ESO ISS PBL13 END 124.334
HIERARCH ESO ISS PBLA13 START 98.3
HIERARCH ESO ISS PBLA13 END 98.5
HIERARCH ESO ISS PBL14 START 169.537
HIERARCH ESO ISS PBL14 END 169.486
HIERARCH ESO ISS PBLA14 START 31.656
HIERARCH ESO ISS PBLA14 END 31.874
HIERARCH ESO ISS PBL23 START 109.291
HIERARCH ESO ISS PBL23 END 108.993
HIERARCH ESO ISS PBLA23 START 76.0
HIERARCH ESO ISS PBLA23 END 76.2
HIERARCH ESO ISS PBL24 START 201.877
HIERARCH ESO ISS PBL24 END 201.884
HIERARCH ESO ISS PBLA24 START 20.756
HIERARCH ESO ISS PBLA24 END 21.006
HIERARCH ESO ISS PBL34 START 165.871
HIERARCH ESO ISS PBL34 END 165.804
HIERARCH ESO ISS PBLA34 START 348.0
HIERARCH ESO ISS PBLA34 END 348.357
HIERARCH ESO ISS AMBI TAU0 START 0.002355
HIERARCH ESO ISS AMBI TAU0 END 0.002355
HIERARCH ESO ISS AMBI TEMP 12.61
HIERARCH ESO ISS AMBI FWHM START 1.35
HIERARCH ESO ISS AMBI FWHM END 1.35