Exposure
ID
GRAVI.2025-08-23T02:58:35.966_1
Header ID
GRAVI.2025-08-23T02:58:35.966
Date updated
2025-08-23 03:11:00 UTC+0000
Release date
2026-08-23 03:11:00 UTC+0000
UTC Start
2025-08-23 02:58:35.966
UTC End
2025-08-23 03:01:15.966
MJD Start
60910.12402738
MJD End
60910.125879231855
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0022855
Ambient temperature (°C)
2.31
Seeing (arcsec)
1.0950000000000002
Observation
ID
70072
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
51987
Name
HD_155666
RA
258.626674
DEC
-34.80753
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 48.6290 48.6280 176.6000 177.1000
A0-J2 104.9120 104.2530 124.6000 125.3000
A0-J6 145.0370 144.4060 42.1280 42.2750
B5-J2 84.2360 83.4570 97.5000 98.0000
B5-J6 182.4560 181.9780 31.1710 31.3460
J2-J6 167.4950 167.4860 3.7370 4.1130
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 60910.12402738
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 155666
HIERARCH ESO INS SOBJ NAME HD_155666
RA 258.626674
DEC -34.80753
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 48.629
HIERARCH ESO ISS PBL12 END 48.628
HIERARCH ESO ISS PBLA12 START 176.6
HIERARCH ESO ISS PBLA12 END 177.1
HIERARCH ESO ISS PBL13 START 104.912
HIERARCH ESO ISS PBL13 END 104.253
HIERARCH ESO ISS PBLA13 START 124.6
HIERARCH ESO ISS PBLA13 END 125.3
HIERARCH ESO ISS PBL14 START 145.037
HIERARCH ESO ISS PBL14 END 144.406
HIERARCH ESO ISS PBLA14 START 42.128
HIERARCH ESO ISS PBLA14 END 42.275
HIERARCH ESO ISS PBL23 START 84.236
HIERARCH ESO ISS PBL23 END 83.457
HIERARCH ESO ISS PBLA23 START 97.5
HIERARCH ESO ISS PBLA23 END 98.0
HIERARCH ESO ISS PBL24 START 182.456
HIERARCH ESO ISS PBL24 END 181.978
HIERARCH ESO ISS PBLA24 START 31.171
HIERARCH ESO ISS PBLA24 END 31.346
HIERARCH ESO ISS PBL34 START 167.495
HIERARCH ESO ISS PBL34 END 167.486
HIERARCH ESO ISS PBLA34 START 3.737
HIERARCH ESO ISS PBLA34 END 4.113
HIERARCH ESO ISS AMBI TAU0 START 0.002345
HIERARCH ESO ISS AMBI TAU0 END 0.002226
HIERARCH ESO ISS AMBI TEMP 2.31
HIERARCH ESO ISS AMBI FWHM START 1.08
HIERARCH ESO ISS AMBI FWHM END 1.11