Exposure
ID
GRAVI.2025-06-21T04:18:07.229_1
Header ID
GRAVI.2025-06-21T04:18:07.229
Date updated
2025-06-21 04:30:40 UTC+0000
Release date
2026-06-21 04:30:40 UTC+0000
UTC Start
2025-06-21 04:18:07.229
UTC End
2025-06-21 04:21:19.229
MJD Start
60847.17925034
MJD End
60847.181472562224
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0055165
Ambient temperature (°C)
11.87
Seeing (arcsec)
0.52
Observation
ID
67543
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
50233
Name
HD_163755
RA
269.77202
DEC
-30.25307
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 68.0080 68.0960 268.3000 268.8000
K0-D0 95.8110 95.8760 247.8000 248.3000
K0-J3 56.0570 56.1080 330.0930 330.4690
G2-D0 39.9710 39.9610 211.3000 211.7000
G2-J3 64.5030 64.4940 38.3570 38.8150
D0-J3 104.2850 104.2660 35.6480 36.1010
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 60847.17925034
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 163755
HIERARCH ESO INS SOBJ NAME HD_163755
RA 269.77202
DEC -30.25307
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 68.008
HIERARCH ESO ISS PBL12 END 68.096
HIERARCH ESO ISS PBLA12 START 268.3
HIERARCH ESO ISS PBLA12 END 268.8
HIERARCH ESO ISS PBL13 START 95.811
HIERARCH ESO ISS PBL13 END 95.876
HIERARCH ESO ISS PBLA13 START 247.8
HIERARCH ESO ISS PBLA13 END 248.3
HIERARCH ESO ISS PBL14 START 56.057
HIERARCH ESO ISS PBL14 END 56.108
HIERARCH ESO ISS PBLA14 START 330.093
HIERARCH ESO ISS PBLA14 END 330.469
HIERARCH ESO ISS PBL23 START 39.971
HIERARCH ESO ISS PBL23 END 39.961
HIERARCH ESO ISS PBLA23 START 211.3
HIERARCH ESO ISS PBLA23 END 211.7
HIERARCH ESO ISS PBL24 START 64.503
HIERARCH ESO ISS PBL24 END 64.494
HIERARCH ESO ISS PBLA24 START 38.357
HIERARCH ESO ISS PBLA24 END 38.815
HIERARCH ESO ISS PBL34 START 104.285
HIERARCH ESO ISS PBL34 END 104.266
HIERARCH ESO ISS PBLA34 START 35.648
HIERARCH ESO ISS PBLA34 END 36.101
HIERARCH ESO ISS AMBI TAU0 START 0.005233
HIERARCH ESO ISS AMBI TAU0 END 0.0058
HIERARCH ESO ISS AMBI TEMP 11.87
HIERARCH ESO ISS AMBI FWHM START 0.49
HIERARCH ESO ISS AMBI FWHM END 0.55