Exposure
ID
GRAVI.2025-06-22T05:45:07.312_1
Header ID
GRAVI.2025-06-22T05:45:07.312
Date updated
2025-06-22 05:55:49 UTC+0000
Release date
2026-06-22 05:55:49 UTC+0000
UTC Start
2025-06-22 05:45:07.312
UTC End
2025-06-22 05:47:47.312
MJD Start
60848.23966796
MJD End
60848.241519811854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0029045
Ambient temperature (°C)
12.0
Seeing (arcsec)
0.51
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 66.6670 66.4960 279.1000 279.5000
K0-D0 93.0990 92.8370 258.0000 258.3000
K0-J3 56.5580 56.5540 339.8210 340.1930
G2-D0 39.1240 39.0630 220.2000 220.4000
G2-J3 62.9090 62.7880 47.4220 47.6830
D0-J3 101.8380 101.6570 44.6360 44.8950
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 60848.23966796
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 66.667
HIERARCH ESO ISS PBL12 END 66.496
HIERARCH ESO ISS PBLA12 START 279.1
HIERARCH ESO ISS PBLA12 END 279.5
HIERARCH ESO ISS PBL13 START 93.099
HIERARCH ESO ISS PBL13 END 92.837
HIERARCH ESO ISS PBLA13 START 258.0
HIERARCH ESO ISS PBLA13 END 258.3
HIERARCH ESO ISS PBL14 START 56.558
HIERARCH ESO ISS PBL14 END 56.554
HIERARCH ESO ISS PBLA14 START 339.821
HIERARCH ESO ISS PBLA14 END 340.193
HIERARCH ESO ISS PBL23 START 39.124
HIERARCH ESO ISS PBL23 END 39.063
HIERARCH ESO ISS PBLA23 START 220.2
HIERARCH ESO ISS PBLA23 END 220.4
HIERARCH ESO ISS PBL24 START 62.909
HIERARCH ESO ISS PBL24 END 62.788
HIERARCH ESO ISS PBLA24 START 47.422
HIERARCH ESO ISS PBLA24 END 47.683
HIERARCH ESO ISS PBL34 START 101.838
HIERARCH ESO ISS PBL34 END 101.657
HIERARCH ESO ISS PBLA34 START 44.636
HIERARCH ESO ISS PBLA34 END 44.895
HIERARCH ESO ISS AMBI TAU0 START 0.002696
HIERARCH ESO ISS AMBI TAU0 END 0.003113
HIERARCH ESO ISS AMBI TEMP 12.0
HIERARCH ESO ISS AMBI FWHM START 0.55
HIERARCH ESO ISS AMBI FWHM END 0.47