Exposure
ID
GRAVI.2025-12-08T03:52:08.979_1
Header ID
GRAVI.2025-12-08T03:52:08.979
Date updated
2025-12-08 04:01:03 UTC+0000
Release date
2026-12-08 04:01:03 UTC+0000
UTC Start
2025-12-08 03:52:08.979
UTC End
2025-12-08 03:54:48.979
MJD Start
61017.16121503
MJD End
61017.163066881854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0034655
Ambient temperature (°C)
11.38
Seeing (arcsec)
0.9
Observation
ID
72039
Category
science
Program ID
116.29H7.001
Program Title
GPAO COMMISSIONING
Program Type
Normal
PI / COI
TEAM
Target
ID
53500
Name
V_HL_Tau
RA
67.912952
DEC
18.23234
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 43.6230 43.8590 32.6000 32.8000
U1-U3 81.5310 82.0160 40.1000 40.3000
U1-U4 120.1110 120.6720 68.0250 67.9030
U2-U3 38.7140 38.9510 48.6000 48.7000
U2-U4 88.2820 88.4490 84.6840 84.4640
U3-U4 61.3590 61.2180 106.4730 106.2810
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 116.29H7.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 61017.16121503
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME V HL Tau
HIERARCH ESO INS SOBJ NAME V_HL_Tau
RA 67.912952
DEC 18.23234
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 U1
HIERARCH ESO ISS CONF STATION2 U2
HIERARCH ESO ISS CONF STATION3 U3
HIERARCH ESO ISS CONF STATION4 U4
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 43.623
HIERARCH ESO ISS PBL12 END 43.859
HIERARCH ESO ISS PBLA12 START 32.6
HIERARCH ESO ISS PBLA12 END 32.8
HIERARCH ESO ISS PBL13 START 81.531
HIERARCH ESO ISS PBL13 END 82.016
HIERARCH ESO ISS PBLA13 START 40.1
HIERARCH ESO ISS PBLA13 END 40.3
HIERARCH ESO ISS PBL14 START 120.111
HIERARCH ESO ISS PBL14 END 120.672
HIERARCH ESO ISS PBLA14 START 68.025
HIERARCH ESO ISS PBLA14 END 67.903
HIERARCH ESO ISS PBL23 START 38.714
HIERARCH ESO ISS PBL23 END 38.951
HIERARCH ESO ISS PBLA23 START 48.6
HIERARCH ESO ISS PBLA23 END 48.7
HIERARCH ESO ISS PBL24 START 88.282
HIERARCH ESO ISS PBL24 END 88.449
HIERARCH ESO ISS PBLA24 START 84.684
HIERARCH ESO ISS PBLA24 END 84.464
HIERARCH ESO ISS PBL34 START 61.359
HIERARCH ESO ISS PBL34 END 61.218
HIERARCH ESO ISS PBLA34 START 106.473
HIERARCH ESO ISS PBLA34 END 106.281
HIERARCH ESO ISS AMBI TAU0 START 0.003836
HIERARCH ESO ISS AMBI TAU0 END 0.003095
HIERARCH ESO ISS AMBI TEMP 11.38
HIERARCH ESO ISS AMBI FWHM START 0.9
HIERARCH ESO ISS AMBI FWHM END 0.9