Exposure
ID
GRAVI.2025-06-22T03:15:12.864_1
Header ID
GRAVI.2025-06-22T03:15:12.864
Date updated
2025-06-22 03:25:55 UTC+0000
Release date
2025-06-22 03:15:12 UTC+0000
UTC Start
2025-06-22 03:15:12.864
UTC End
2025-06-22 03:17:52.864
MJD Start
60848.13556555
MJD End
60848.13741740186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002602
Ambient temperature (°C)
12.0
Seeing (arcsec)
0.6000000000000001
Observation
ID
68167
Category
calibrator
Program ID
115.282E.001
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
50672
Name
HD157919
RA
261.838756
DEC
-29.86782
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 66.9390 67.0890 264.9000 265.3000
K0-D0 94.8110 94.9560 244.2000 244.6000
K0-J3 55.6290 55.6890 327.4960 327.7700
G2-D0 39.9720 39.9770 207.8000 208.2000
G2-J3 64.4090 64.4300 34.8220 35.2210
D0-J3 104.1970 104.2240 32.1490 32.5440
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60848.13556555
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME d Oph
HIERARCH ESO INS SOBJ NAME HD157919
RA 261.838756
DEC -29.86782
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 66.939
HIERARCH ESO ISS PBL12 END 67.089
HIERARCH ESO ISS PBLA12 START 264.9
HIERARCH ESO ISS PBLA12 END 265.3
HIERARCH ESO ISS PBL13 START 94.811
HIERARCH ESO ISS PBL13 END 94.956
HIERARCH ESO ISS PBLA13 START 244.2
HIERARCH ESO ISS PBLA13 END 244.6
HIERARCH ESO ISS PBL14 START 55.629
HIERARCH ESO ISS PBL14 END 55.689
HIERARCH ESO ISS PBLA14 START 327.496
HIERARCH ESO ISS PBLA14 END 327.77
HIERARCH ESO ISS PBL23 START 39.972
HIERARCH ESO ISS PBL23 END 39.977
HIERARCH ESO ISS PBLA23 START 207.8
HIERARCH ESO ISS PBLA23 END 208.2
HIERARCH ESO ISS PBL24 START 64.409
HIERARCH ESO ISS PBL24 END 64.43
HIERARCH ESO ISS PBLA24 START 34.822
HIERARCH ESO ISS PBLA24 END 35.221
HIERARCH ESO ISS PBL34 START 104.197
HIERARCH ESO ISS PBL34 END 104.224
HIERARCH ESO ISS PBLA34 START 32.149
HIERARCH ESO ISS PBLA34 END 32.544
HIERARCH ESO ISS AMBI TAU0 START 0.002482
HIERARCH ESO ISS AMBI TAU0 END 0.002722
HIERARCH ESO ISS AMBI TEMP 12.0
HIERARCH ESO ISS AMBI FWHM START 0.64
HIERARCH ESO ISS AMBI FWHM END 0.56