Exposure
ID
PIONI.2025-07-21T03:36:44.533_1
Header ID
PIONI.2025-07-21T03:36:44.533
Date updated
2025-07-21 03:45:48 UTC+0000
Release date
2025-07-21 03:36:44 UTC+0000
UTC Start
2025-07-21 03:36:44.534
UTC End
2025-07-21 03:37:10.134
MJD Start
60877.1505154343
MJD End
60877.1508117306
Exposure time (s)
25.6
Validation level
1
Tau 0: Coherence time (s)
0.002602
Ambient temperature (°C)
15.46
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 84.9610 84.8870 114.8000 114.8000
A0-J2 126.6870 126.6200 92.5000 92.5000
A0-K0 127.9250 127.9150 72.7760 72.7730
G1-J2 57.9530 57.9660 58.6000 58.6000
G1-K0 86.2400 86.2770 31.5010 31.5400
J2-K0 43.5280 43.5230 354.2150 354.2880
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 60877.1505154343
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 84.961
HIERARCH ESO ISS PBL12 END 84.887
HIERARCH ESO ISS PBLA12 START 114.8
HIERARCH ESO ISS PBLA12 END 114.8
HIERARCH ESO ISS PBL13 START 126.687
HIERARCH ESO ISS PBL13 END 126.62
HIERARCH ESO ISS PBLA13 START 92.5
HIERARCH ESO ISS PBLA13 END 92.5
HIERARCH ESO ISS PBL14 START 127.925
HIERARCH ESO ISS PBL14 END 127.915
HIERARCH ESO ISS PBLA14 START 72.776
HIERARCH ESO ISS PBLA14 END 72.773
HIERARCH ESO ISS PBL23 START 57.953
HIERARCH ESO ISS PBL23 END 57.966
HIERARCH ESO ISS PBLA23 START 58.6
HIERARCH ESO ISS PBLA23 END 58.6
HIERARCH ESO ISS PBL24 START 86.24
HIERARCH ESO ISS PBL24 END 86.277
HIERARCH ESO ISS PBLA24 START 31.501
HIERARCH ESO ISS PBLA24 END 31.54
HIERARCH ESO ISS PBL34 START 43.528
HIERARCH ESO ISS PBL34 END 43.523
HIERARCH ESO ISS PBLA34 START 354.215
HIERARCH ESO ISS PBLA34 END 354.288
HIERARCH ESO ISS AMBI TAU0 START 0.002602
HIERARCH ESO ISS AMBI TAU0 END 0.002602
HIERARCH ESO ISS AMBI TEMP 15.46
HIERARCH ESO ISS AMBI FWHM START 0.76
HIERARCH ESO ISS AMBI FWHM END 0.76