Exposure
ID
GRAVI.2025-06-22T05:35:16.287_1
Header ID
GRAVI.2025-06-22T05:35:16.287
Date updated
2025-06-22 05:46:02 UTC+0000
Release date
2026-06-22 05:46:02 UTC+0000
UTC Start
2025-06-22 05:35:16.287
UTC End
2025-06-22 05:37:56.287
MJD Start
60848.2328274
MJD End
60848.23467925186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0024774999999999997
Ambient temperature (°C)
12.11
Seeing (arcsec)
0.76
Observation
ID
68175
Category
science
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
50678
Name
W_Sgr
RA
271.255137
DEC
-29.58012
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 67.1790 67.0350 277.8000 278.2000
K0-D0 93.8890 93.6650 256.9000 257.2000
K0-J3 56.5630 56.5630 338.5910 338.9530
G2-D0 39.3100 39.2570 219.3000 219.5000
G2-J3 63.2750 63.1710 46.5160 46.7880
D0-J3 102.3910 102.2340 43.7390 44.0080
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60848.2328274
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.255137
DEC -29.58012
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 67.179
HIERARCH ESO ISS PBL12 END 67.035
HIERARCH ESO ISS PBLA12 START 277.8
HIERARCH ESO ISS PBLA12 END 278.2
HIERARCH ESO ISS PBL13 START 93.889
HIERARCH ESO ISS PBL13 END 93.665
HIERARCH ESO ISS PBLA13 START 256.9
HIERARCH ESO ISS PBLA13 END 257.2
HIERARCH ESO ISS PBL14 START 56.563
HIERARCH ESO ISS PBL14 END 56.563
HIERARCH ESO ISS PBLA14 START 338.591
HIERARCH ESO ISS PBLA14 END 338.953
HIERARCH ESO ISS PBL23 START 39.31
HIERARCH ESO ISS PBL23 END 39.257
HIERARCH ESO ISS PBLA23 START 219.3
HIERARCH ESO ISS PBLA23 END 219.5
HIERARCH ESO ISS PBL24 START 63.275
HIERARCH ESO ISS PBL24 END 63.171
HIERARCH ESO ISS PBLA24 START 46.516
HIERARCH ESO ISS PBLA24 END 46.788
HIERARCH ESO ISS PBL34 START 102.391
HIERARCH ESO ISS PBL34 END 102.234
HIERARCH ESO ISS PBLA34 START 43.739
HIERARCH ESO ISS PBLA34 END 44.008
HIERARCH ESO ISS AMBI TAU0 START 0.002421
HIERARCH ESO ISS AMBI TAU0 END 0.002534
HIERARCH ESO ISS AMBI TEMP 12.11
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.79