Exposure
ID
PIONI.2025-07-21T03:38:00.113_1
Header ID
PIONI.2025-07-21T03:38:00.113
Date updated
2025-07-21 03:45:48 UTC+0000
Release date
2025-07-21 03:38:00 UTC+0000
UTC Start
2025-07-21 03:38:00.113
UTC End
2025-07-21 03:38:25.713
MJD Start
60877.1513901977
MJD End
60877.151686494
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.002602
Ambient temperature (°C)
15.55
Seeing (arcsec)
0.76
Observation
ID
68886
Category
calibrator
Program ID
115.283B.001
Program Title
WHAT MAKES THE SYMBIOTIC GIANT IN FG SER BREATHE?
Program Type
Normal
PI / COI
MERC / BOFFIN
Target
ID
51250
Name
HD 166235
RA
272.41974
DEC
0.82288
Instrument
Interferometer
VLTI
Instrument
PIONIER
Instrument mode
GRISM-H
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 84.8050 84.7300 114.8000 114.9000
A0-J2 126.5460 126.4770 92.5000 92.4000
A0-K0 127.9030 127.8910 72.7670 72.7610
G1-J2 57.9790 57.9910 58.6000 58.6000
G1-K0 86.3180 86.3550 31.5800 31.6160
J2-K0 43.5170 43.5110 354.3650 354.4350
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.283B.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE FRINGE,OBJECT
MJD-OBS 60877.1513901977
HIERARCH ESO DPR TECH INTERFEROMETRY
HIERARCH ESO OBS TARG NAME HD 166235
RA 272.41974
DEC 0.82288
HIERARCH ESO INS OPTI2 NAME GRISM
HIERARCH ESO INS OPTI2 ID GRISM
HIERARCH ESO INS FILT1 NAME H
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
HIERARCH ESO DET DIT 0.0005
HIERARCH ESO DET NDIT 51200
HIERARCH ESO ISS PBL12 START 84.805
HIERARCH ESO ISS PBL12 END 84.73
HIERARCH ESO ISS PBLA12 START 114.8
HIERARCH ESO ISS PBLA12 END 114.9
HIERARCH ESO ISS PBL13 START 126.546
HIERARCH ESO ISS PBL13 END 126.477
HIERARCH ESO ISS PBLA13 START 92.5
HIERARCH ESO ISS PBLA13 END 92.4
HIERARCH ESO ISS PBL14 START 127.903
HIERARCH ESO ISS PBL14 END 127.891
HIERARCH ESO ISS PBLA14 START 72.767
HIERARCH ESO ISS PBLA14 END 72.761
HIERARCH ESO ISS PBL23 START 57.979
HIERARCH ESO ISS PBL23 END 57.991
HIERARCH ESO ISS PBLA23 START 58.6
HIERARCH ESO ISS PBLA23 END 58.6
HIERARCH ESO ISS PBL24 START 86.318
HIERARCH ESO ISS PBL24 END 86.355
HIERARCH ESO ISS PBLA24 START 31.58
HIERARCH ESO ISS PBLA24 END 31.616
HIERARCH ESO ISS PBL34 START 43.517
HIERARCH ESO ISS PBL34 END 43.511
HIERARCH ESO ISS PBLA34 START 354.365
HIERARCH ESO ISS PBLA34 END 354.435
HIERARCH ESO ISS AMBI TAU0 START 0.002602
HIERARCH ESO ISS AMBI TAU0 END 0.002602
HIERARCH ESO ISS AMBI TEMP 15.55
HIERARCH ESO ISS AMBI FWHM START 0.76
HIERARCH ESO ISS AMBI FWHM END 0.76