Exposure
ID
GRAVI.2025-06-21T04:09:55.209_1
Header ID
GRAVI.2025-06-21T04:09:55.209
Date updated
2025-06-21 04:20:53 UTC+0000
Release date
2026-06-21 04:20:53 UTC+0000
UTC Start
2025-06-21 04:09:55.209
UTC End
2025-06-21 04:13:07.209
MJD Start
60847.17355566
MJD End
60847.17577788223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0059375
Ambient temperature (°C)
11.98
Seeing (arcsec)
0.7
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 67.7650 67.8820 267.3000 267.8000
K0-D0 95.6100 95.7090 246.7000 247.2000
K0-J3 55.9320 55.9910 329.2770 329.6410
G2-D0 39.9840 39.9790 210.3000 210.7000
G2-J3 64.5060 64.5070 37.3250 37.7920
D0-J3 104.3020 104.2990 34.6260 35.0880
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 60847.17355566
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 67.765
HIERARCH ESO ISS PBL12 END 67.882
HIERARCH ESO ISS PBLA12 START 267.3
HIERARCH ESO ISS PBLA12 END 267.8
HIERARCH ESO ISS PBL13 START 95.61
HIERARCH ESO ISS PBL13 END 95.709
HIERARCH ESO ISS PBLA13 START 246.7
HIERARCH ESO ISS PBLA13 END 247.2
HIERARCH ESO ISS PBL14 START 55.932
HIERARCH ESO ISS PBL14 END 55.991
HIERARCH ESO ISS PBLA14 START 329.277
HIERARCH ESO ISS PBLA14 END 329.641
HIERARCH ESO ISS PBL23 START 39.984
HIERARCH ESO ISS PBL23 END 39.979
HIERARCH ESO ISS PBLA23 START 210.3
HIERARCH ESO ISS PBLA23 END 210.7
HIERARCH ESO ISS PBL24 START 64.506
HIERARCH ESO ISS PBL24 END 64.507
HIERARCH ESO ISS PBLA24 START 37.325
HIERARCH ESO ISS PBLA24 END 37.792
HIERARCH ESO ISS PBL34 START 104.302
HIERARCH ESO ISS PBL34 END 104.299
HIERARCH ESO ISS PBLA34 START 34.626
HIERARCH ESO ISS PBLA34 END 35.088
HIERARCH ESO ISS AMBI TAU0 START 0.0057
HIERARCH ESO ISS AMBI TAU0 END 0.006175
HIERARCH ESO ISS AMBI TEMP 11.98
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.68