Exposure
ID
GRAVI.2025-07-18T08:42:52.946_1
Header ID
GRAVI.2025-07-18T08:42:52.946
Date updated
2025-07-18 08:55:50 UTC+0000
Release date
2025-07-18 08:42:52 UTC+0000
UTC Start
2025-07-18 08:42:52.946
UTC End
2025-07-18 08:46:04.946
MJD Start
60874.3631128
MJD End
60874.36533502222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0058484999999999995
Ambient temperature (°C)
14.39
Seeing (arcsec)
0.5549999999999999
Observation
ID
68850
Category
calibrator
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
51220
Name
tau_Cet
RA
26.004599
DEC
-15.93261
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 83.6360 84.1350 109.4000 109.5000
A0-J2 114.1280 115.0540 84.4000 84.7000
A0-K0 112.1440 112.9640 59.5860 60.0810
G1-J2 52.0810 52.3500 41.7000 42.3000
G1-K0 86.3380 86.4270 11.8970 12.4220
J2-K0 48.6380 48.6320 339.7070 339.9790
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27VK.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60874.3631128
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME tau Cet
HIERARCH ESO INS SOBJ NAME tau_Cet
RA 26.004599
DEC -15.93261
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 83.636
HIERARCH ESO ISS PBL12 END 84.135
HIERARCH ESO ISS PBLA12 START 109.4
HIERARCH ESO ISS PBLA12 END 109.5
HIERARCH ESO ISS PBL13 START 114.128
HIERARCH ESO ISS PBL13 END 115.054
HIERARCH ESO ISS PBLA13 START 84.4
HIERARCH ESO ISS PBLA13 END 84.7
HIERARCH ESO ISS PBL14 START 112.144
HIERARCH ESO ISS PBL14 END 112.964
HIERARCH ESO ISS PBLA14 START 59.586
HIERARCH ESO ISS PBLA14 END 60.081
HIERARCH ESO ISS PBL23 START 52.081
HIERARCH ESO ISS PBL23 END 52.35
HIERARCH ESO ISS PBLA23 START 41.7
HIERARCH ESO ISS PBLA23 END 42.3
HIERARCH ESO ISS PBL24 START 86.338
HIERARCH ESO ISS PBL24 END 86.427
HIERARCH ESO ISS PBLA24 START 11.897
HIERARCH ESO ISS PBLA24 END 12.422
HIERARCH ESO ISS PBL34 START 48.638
HIERARCH ESO ISS PBL34 END 48.632
HIERARCH ESO ISS PBLA34 START 339.707
HIERARCH ESO ISS PBLA34 END 339.979
HIERARCH ESO ISS AMBI TAU0 START 0.005974
HIERARCH ESO ISS AMBI TAU0 END 0.005723
HIERARCH ESO ISS AMBI TEMP 14.39
HIERARCH ESO ISS AMBI FWHM START 0.52
HIERARCH ESO ISS AMBI FWHM END 0.59