Exposure
ID
GRAVI.2025-12-08T03:56:56.990_1
Header ID
GRAVI.2025-12-08T03:56:56.990
Date updated
2025-12-08 04:11:23 UTC+0000
Release date
2026-12-08 04:11:23 UTC+0000
UTC Start
2025-12-08 03:56:56.990
UTC End
2025-12-08 03:59:36.990
MJD Start
61017.1645485
MJD End
61017.16640035185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0039275
Ambient temperature (°C)
11.43
Seeing (arcsec)
0.745
Observation
ID
72040
Category
science
Program ID
116.29H7.001
Program Title
GPAO COMMISSIONING
Program Type
Normal
PI / COI
TEAM
Target
ID
53501
Name
V_HL_Tau
RA
67.912954
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 44.0110 44.2440 33.0000 33.2000
U1-U3 82.3290 82.8020 40.4000 40.6000
U1-U4 121.0260 121.5540 67.8220 67.6960
U2-U3 39.1020 39.3310 48.8000 48.8000
U2-U4 88.5500 88.6930 84.3210 84.1020
U3-U4 61.1220 60.9680 106.1580 105.9710
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 61017.1645485
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME V HL Tau
HIERARCH ESO INS SOBJ NAME V_HL_Tau
RA 67.912954
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 44.011
HIERARCH ESO ISS PBL12 END 44.244
HIERARCH ESO ISS PBLA12 START 33.0
HIERARCH ESO ISS PBLA12 END 33.2
HIERARCH ESO ISS PBL13 START 82.329
HIERARCH ESO ISS PBL13 END 82.802
HIERARCH ESO ISS PBLA13 START 40.4
HIERARCH ESO ISS PBLA13 END 40.6
HIERARCH ESO ISS PBL14 START 121.026
HIERARCH ESO ISS PBL14 END 121.554
HIERARCH ESO ISS PBLA14 START 67.822
HIERARCH ESO ISS PBLA14 END 67.696
HIERARCH ESO ISS PBL23 START 39.102
HIERARCH ESO ISS PBL23 END 39.331
HIERARCH ESO ISS PBLA23 START 48.8
HIERARCH ESO ISS PBLA23 END 48.8
HIERARCH ESO ISS PBL24 START 88.55
HIERARCH ESO ISS PBL24 END 88.693
HIERARCH ESO ISS PBLA24 START 84.321
HIERARCH ESO ISS PBLA24 END 84.102
HIERARCH ESO ISS PBL34 START 61.122
HIERARCH ESO ISS PBL34 END 60.968
HIERARCH ESO ISS PBLA34 START 106.158
HIERARCH ESO ISS PBLA34 END 105.971
HIERARCH ESO ISS AMBI TAU0 START 0.003531
HIERARCH ESO ISS AMBI TAU0 END 0.004324
HIERARCH ESO ISS AMBI TEMP 11.43
HIERARCH ESO ISS AMBI FWHM START 0.74
HIERARCH ESO ISS AMBI FWHM END 0.75