Exposure
ID
GRAVI.2025-04-06T06:36:30.147_1
Header ID
GRAVI.2025-04-06T06:36:30.147
Date updated
2025-04-06 06:50:51 UTC+0000
Release date
2026-04-06 06:50:51 UTC+0000
UTC Start
2025-04-06 06:36:30.147
UTC End
2025-04-06 06:39:42.147
MJD Start
60771.27534892
MJD End
60771.27757114222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.003386
Ambient temperature (°C)
13.96
Seeing (arcsec)
0.595
Observation
ID
66056
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
49175
Name
HD_163755
RA
269.769447
DEC
-30.25307
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 21.1450 21.2960 128.1000 128.2000
A0-D0 27.2340 27.3860 40.3000 41.2000
A0-C1 17.0620 17.2670 95.9930 96.3860
B2-D0 33.8080 33.8100 1.7000 2.2000
B2-C1 11.2620 11.2630 1.6360 2.1720
D0-C1 22.5460 22.5470 181.6840 182.2210
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 60771.27534892
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 163755
HIERARCH ESO INS SOBJ NAME HD_163755
RA 269.769447
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 A0
HIERARCH ESO ISS CONF STATION2 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 21.145
HIERARCH ESO ISS PBL12 END 21.296
HIERARCH ESO ISS PBLA12 START 128.1
HIERARCH ESO ISS PBLA12 END 128.2
HIERARCH ESO ISS PBL13 START 27.234
HIERARCH ESO ISS PBL13 END 27.386
HIERARCH ESO ISS PBLA13 START 40.3
HIERARCH ESO ISS PBLA13 END 41.2
HIERARCH ESO ISS PBL14 START 17.062
HIERARCH ESO ISS PBL14 END 17.267
HIERARCH ESO ISS PBLA14 START 95.993
HIERARCH ESO ISS PBLA14 END 96.386
HIERARCH ESO ISS PBL23 START 33.808
HIERARCH ESO ISS PBL23 END 33.81
HIERARCH ESO ISS PBLA23 START 1.7
HIERARCH ESO ISS PBLA23 END 2.2
HIERARCH ESO ISS PBL24 START 11.262
HIERARCH ESO ISS PBL24 END 11.263
HIERARCH ESO ISS PBLA24 START 1.636
HIERARCH ESO ISS PBLA24 END 2.172
HIERARCH ESO ISS PBL34 START 22.546
HIERARCH ESO ISS PBL34 END 22.547
HIERARCH ESO ISS PBLA34 START 181.684
HIERARCH ESO ISS PBLA34 END 182.221
HIERARCH ESO ISS AMBI TAU0 START 0.002897
HIERARCH ESO ISS AMBI TAU0 END 0.003875
HIERARCH ESO ISS AMBI TEMP 13.96
HIERARCH ESO ISS AMBI FWHM START 0.63
HIERARCH ESO ISS AMBI FWHM END 0.56