Exposure
ID
GRAVI.2025-08-14T02:22:12.464_1
Header ID
GRAVI.2025-08-14T02:22:12.464
Date updated
2025-08-14 02:30:48 UTC+0000
Release date
2025-08-14 02:22:12 UTC+0000
UTC Start
2025-08-14 02:22:12.464
UTC End
2025-08-14 02:24:52.464
MJD Start
60901.09875537
MJD End
60901.10060722186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0053545
Ambient temperature (°C)
14.31
Seeing (arcsec)
0.75
Observation
ID
69982
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
51924
Name
HD156227
RA
259.176937
DEC
-6.24502
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
K0 B2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-B2 117.6490 117.2580 243.4000 243.4000
K0-D0 89.5130 89.0800 254.0000 254.0000
K0-J3 50.4800 50.3990 345.4500 345.8900
B2-D0 33.9180 33.9250 34.4000 34.5000
B2-J3 137.3890 137.3140 42.3160 42.3610
D0-J3 103.9040 103.8170 44.9070 44.9380
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 60901.09875537
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 156227
HIERARCH ESO INS SOBJ NAME HD156227
RA 259.176937
DEC -6.24502
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 B2
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 117.649
HIERARCH ESO ISS PBL12 END 117.258
HIERARCH ESO ISS PBLA12 START 243.4
HIERARCH ESO ISS PBLA12 END 243.4
HIERARCH ESO ISS PBL13 START 89.513
HIERARCH ESO ISS PBL13 END 89.08
HIERARCH ESO ISS PBLA13 START 254.0
HIERARCH ESO ISS PBLA13 END 254.0
HIERARCH ESO ISS PBL14 START 50.48
HIERARCH ESO ISS PBL14 END 50.399
HIERARCH ESO ISS PBLA14 START 345.45
HIERARCH ESO ISS PBLA14 END 345.89
HIERARCH ESO ISS PBL23 START 33.918
HIERARCH ESO ISS PBL23 END 33.925
HIERARCH ESO ISS PBLA23 START 34.4
HIERARCH ESO ISS PBLA23 END 34.5
HIERARCH ESO ISS PBL24 START 137.389
HIERARCH ESO ISS PBL24 END 137.314
HIERARCH ESO ISS PBLA24 START 42.316
HIERARCH ESO ISS PBLA24 END 42.361
HIERARCH ESO ISS PBL34 START 103.904
HIERARCH ESO ISS PBL34 END 103.817
HIERARCH ESO ISS PBLA34 START 44.907
HIERARCH ESO ISS PBLA34 END 44.938
HIERARCH ESO ISS AMBI TAU0 START 0.004714
HIERARCH ESO ISS AMBI TAU0 END 0.005995
HIERARCH ESO ISS AMBI TEMP 14.31
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.68