Exposure
ID
GRAVI.2025-10-03T23:31:57.732_1
Header ID
GRAVI.2025-10-03T23:31:57.732
Date updated
2025-10-03 23:40:44 UTC+0000
Release date
2025-10-03 23:31:57 UTC+0000
UTC Start
2025-10-03 23:31:57.732
UTC End
2025-10-03 23:32:29.732
MJD Start
60951.98052931
MJD End
60951.98089968037
Exposure time (s)
32.0
Validation level
1
Tau 0: Coherence time (s)
0.0038745
Ambient temperature (°C)
12.23
Seeing (arcsec)
0.61
Observation
ID
70596
Category
calibrator
Program ID
60.A-9256(A)
Program Title
CALIBRATION RUN FOR GRAVITY
Program Type
Normal
PI / COI
OBSERVATORY
Target
ID
52356
Name
HD_176557
RA
285.868004
DEC
-50.31674
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
SINGLE
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 50.8850 50.8540 33.2000 33.3000
U1-U3 92.8260 92.7610 40.2000 40.3000
U1-U4 124.0560 123.9690 69.2910 69.4370
U2-U3 42.7620 42.7300 48.4000 48.6000
U2-U4 88.1850 88.1500 89.1590 89.3200
U3-U4 62.3580 62.3660 115.7300 115.8870
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 60.A-9256(A)
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60951.98052931
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 176557
HIERARCH ESO INS SOBJ NAME HD_176557
RA 285.868004
DEC -50.31674
HIERARCH ESO INS SPEC RES MEDIUM
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 54.0
HIERARCH ESO DET2 SEQ1 DIT 1.0
HIERARCH ESO DET2 NDIT 32
HIERARCH ESO ISS PBL12 START 50.885
HIERARCH ESO ISS PBL12 END 50.854
HIERARCH ESO ISS PBLA12 START 33.2
HIERARCH ESO ISS PBLA12 END 33.3
HIERARCH ESO ISS PBL13 START 92.826
HIERARCH ESO ISS PBL13 END 92.761
HIERARCH ESO ISS PBLA13 START 40.2
HIERARCH ESO ISS PBLA13 END 40.3
HIERARCH ESO ISS PBL14 START 124.056
HIERARCH ESO ISS PBL14 END 123.969
HIERARCH ESO ISS PBLA14 START 69.291
HIERARCH ESO ISS PBLA14 END 69.437
HIERARCH ESO ISS PBL23 START 42.762
HIERARCH ESO ISS PBL23 END 42.73
HIERARCH ESO ISS PBLA23 START 48.4
HIERARCH ESO ISS PBLA23 END 48.6
HIERARCH ESO ISS PBL24 START 88.185
HIERARCH ESO ISS PBL24 END 88.15
HIERARCH ESO ISS PBLA24 START 89.159
HIERARCH ESO ISS PBLA24 END 89.32
HIERARCH ESO ISS PBL34 START 62.358
HIERARCH ESO ISS PBL34 END 62.366
HIERARCH ESO ISS PBLA34 START 115.73
HIERARCH ESO ISS PBLA34 END 115.887
HIERARCH ESO ISS AMBI TAU0 START 0.00413
HIERARCH ESO ISS AMBI TAU0 END 0.003619
HIERARCH ESO ISS AMBI TEMP 12.23
HIERARCH ESO ISS AMBI FWHM START 0.58
HIERARCH ESO ISS AMBI FWHM END 0.64