Exposure
ID
GRAVI.2025-05-23T05:50:58.307_1
Header ID
GRAVI.2025-05-23T05:50:58.307
Date updated
2025-05-23 06:00:57 UTC+0000
Release date
2026-05-23 06:00:57 UTC+0000
UTC Start
2025-05-23 05:50:58.307
UTC End
2025-05-23 05:54:10.307
MJD Start
60818.2437304
MJD End
60818.24595262222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0050815
Ambient temperature (°C)
13.66
Seeing (arcsec)
0.525
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 67.2480 67.4120 265.6000 266.1000
K0-D0 95.1390 95.2920 245.0000 245.5000
K0-J3 55.7000 55.7710 328.0310 328.3800
G2-D0 39.9850 39.9870 208.6000 209.1000
G2-J3 64.4640 64.4810 35.6360 36.1250
D0-J3 104.2650 104.2830 32.9560 33.4390
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 60818.2437304
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 67.248
HIERARCH ESO ISS PBL12 END 67.412
HIERARCH ESO ISS PBLA12 START 265.6
HIERARCH ESO ISS PBLA12 END 266.1
HIERARCH ESO ISS PBL13 START 95.139
HIERARCH ESO ISS PBL13 END 95.292
HIERARCH ESO ISS PBLA13 START 245.0
HIERARCH ESO ISS PBLA13 END 245.5
HIERARCH ESO ISS PBL14 START 55.7
HIERARCH ESO ISS PBL14 END 55.771
HIERARCH ESO ISS PBLA14 START 328.031
HIERARCH ESO ISS PBLA14 END 328.38
HIERARCH ESO ISS PBL23 START 39.985
HIERARCH ESO ISS PBL23 END 39.987
HIERARCH ESO ISS PBLA23 START 208.6
HIERARCH ESO ISS PBLA23 END 209.1
HIERARCH ESO ISS PBL24 START 64.464
HIERARCH ESO ISS PBL24 END 64.481
HIERARCH ESO ISS PBLA24 START 35.636
HIERARCH ESO ISS PBLA24 END 36.125
HIERARCH ESO ISS PBL34 START 104.265
HIERARCH ESO ISS PBL34 END 104.283
HIERARCH ESO ISS PBLA34 START 32.956
HIERARCH ESO ISS PBLA34 END 33.439
HIERARCH ESO ISS AMBI TAU0 START 0.005155
HIERARCH ESO ISS AMBI TAU0 END 0.005008
HIERARCH ESO ISS AMBI TEMP 13.66
HIERARCH ESO ISS AMBI FWHM START 0.51
HIERARCH ESO ISS AMBI FWHM END 0.54