Exposure
ID
GRAVI.2025-11-06T07:58:57.413_1
Header ID
GRAVI.2025-11-06T07:58:57.413
Date updated
2025-11-06 08:06:06 UTC+0000
Release date
2026-11-06 08:06:06 UTC+0000
UTC Start
2025-11-06 07:58:57.413
UTC End
2025-11-06 08:00:21.413
MJD Start
60985.33260895
MJD End
60985.33358117222
Exposure time (s)
84.0
Validation level
1
Tau 0: Coherence time (s)
0.002443
Ambient temperature (°C)
10.7
Seeing (arcsec)
0.85
Observation
ID
71179
Category
science
Program ID
116.29H7.001
Program Title
GPAO COMMISSIONING
Program Type
Normal
PI / COI
TEAM
Target
ID
52846
Name
51_Eri
RA
69.40284
DEC
-2.47381
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
DUAL
Stations
U1 U2 U3 U4
Projected baselines
Baseline Length start Length end Angle start Angle end
U1-U2 56.1820 56.2090 34.1000 34.2000
U1-U3 102.2750 102.3010 39.5000 39.5000
U1-U4 127.4180 127.2350 63.2430 63.2200
U2-U3 46.6340 46.6290 45.9000 45.9000
U2-U4 82.9800 82.7290 82.4890 82.4840
U3-U4 53.3340 53.1090 113.8810 114.0070
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 116.29H7.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,DUAL
MJD-OBS 60985.33260895
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME 51 Eri
HIERARCH ESO INS SOBJ NAME 51_Eri
RA 69.40284
DEC -2.47381
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE COMBINED
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 109.0
HIERARCH ESO DET2 SEQ1 DIT 1.0
HIERARCH ESO DET2 NDIT 84
HIERARCH ESO ISS PBL12 START 56.182
HIERARCH ESO ISS PBL12 END 56.209
HIERARCH ESO ISS PBLA12 START 34.1
HIERARCH ESO ISS PBLA12 END 34.2
HIERARCH ESO ISS PBL13 START 102.275
HIERARCH ESO ISS PBL13 END 102.301
HIERARCH ESO ISS PBLA13 START 39.5
HIERARCH ESO ISS PBLA13 END 39.5
HIERARCH ESO ISS PBL14 START 127.418
HIERARCH ESO ISS PBL14 END 127.235
HIERARCH ESO ISS PBLA14 START 63.243
HIERARCH ESO ISS PBLA14 END 63.22
HIERARCH ESO ISS PBL23 START 46.634
HIERARCH ESO ISS PBL23 END 46.629
HIERARCH ESO ISS PBLA23 START 45.9
HIERARCH ESO ISS PBLA23 END 45.9
HIERARCH ESO ISS PBL24 START 82.98
HIERARCH ESO ISS PBL24 END 82.729
HIERARCH ESO ISS PBLA24 START 82.489
HIERARCH ESO ISS PBLA24 END 82.484
HIERARCH ESO ISS PBL34 START 53.334
HIERARCH ESO ISS PBL34 END 53.109
HIERARCH ESO ISS PBLA34 START 113.881
HIERARCH ESO ISS PBLA34 END 114.007
HIERARCH ESO ISS AMBI TAU0 START 0.002443
HIERARCH ESO ISS AMBI TAU0 END 0.002443
HIERARCH ESO ISS AMBI TEMP 10.7
HIERARCH ESO ISS AMBI FWHM START 0.85
HIERARCH ESO ISS AMBI FWHM END 0.85
HIERARCH ESO FT ROBJ NAME 51_Eri
HIERARCH ESO FT ROBJ ALPHA 043736.133
HIERARCH ESO FT ROBJ DELTA -022824.775