Exposure
ID
GRAVI.2025-10-14T01:49:48.943_1
Header ID
GRAVI.2025-10-14T01:49:48.943
Date updated
2025-10-14 02:06:01 UTC+0000
Release date
2025-10-14 01:49:48 UTC+0000
UTC Start
2025-10-14 01:49:48.943
UTC End
2025-10-14 01:54:36.943
MJD Start
60962.07626091
MJD End
60962.07959424333
Exposure time (s)
288.0
Validation level
1
Tau 0: Coherence time (s)
0.0043225
Ambient temperature (°C)
11.24
Seeing (arcsec)
0.705
Observation
ID
70939
Category
calibrator
Program ID
115.29R0.001
Program Title
CONSTRAINING CALIBRATOR STAR DIAMETERS FOR RELIABLE INTERFEROMETRIC MEASUREMENTS
Program Type
ToO
PI / COI
GALLENNE / KERVELLA / BRAS
Target
ID
52644
Name
HD189738
RA
300.385849
DEC
0.66282
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 39.1010 38.9890 170.1000 171.1000
A0-J2 98.4720 96.4510 92.8000 92.8000
A0-J6 169.6470 169.6850 35.2350 35.2340
B5-J2 97.7000 96.4520 69.8000 69.5000
B5-J6 199.1870 199.5350 27.2420 27.4160
J2-J6 143.2910 143.2990 359.8010 0.6160
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.29R0.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60962.07626091
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD189738
HIERARCH ESO INS SOBJ NAME HD189738
RA 300.385849
DEC 0.66282
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 326.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 96
HIERARCH ESO ISS PBL12 START 39.101
HIERARCH ESO ISS PBL12 END 38.989
HIERARCH ESO ISS PBLA12 START 170.1
HIERARCH ESO ISS PBLA12 END 171.1
HIERARCH ESO ISS PBL13 START 98.472
HIERARCH ESO ISS PBL13 END 96.451
HIERARCH ESO ISS PBLA13 START 92.8
HIERARCH ESO ISS PBLA13 END 92.8
HIERARCH ESO ISS PBL14 START 169.647
HIERARCH ESO ISS PBL14 END 169.685
HIERARCH ESO ISS PBLA14 START 35.235
HIERARCH ESO ISS PBLA14 END 35.234
HIERARCH ESO ISS PBL23 START 97.7
HIERARCH ESO ISS PBL23 END 96.452
HIERARCH ESO ISS PBLA23 START 69.8
HIERARCH ESO ISS PBLA23 END 69.5
HIERARCH ESO ISS PBL24 START 199.187
HIERARCH ESO ISS PBL24 END 199.535
HIERARCH ESO ISS PBLA24 START 27.242
HIERARCH ESO ISS PBLA24 END 27.416
HIERARCH ESO ISS PBL34 START 143.291
HIERARCH ESO ISS PBL34 END 143.299
HIERARCH ESO ISS PBLA34 START 359.801
HIERARCH ESO ISS PBLA34 END 0.616
HIERARCH ESO ISS AMBI TAU0 START 0.004486
HIERARCH ESO ISS AMBI TAU0 END 0.004159
HIERARCH ESO ISS AMBI TEMP 11.24
HIERARCH ESO ISS AMBI FWHM START 0.69
HIERARCH ESO ISS AMBI FWHM END 0.72