Exposure
ID
GRAVI.2025-07-14T06:30:19.422_1
Header ID
GRAVI.2025-07-14T06:30:19.422
Date updated
2025-07-14 06:40:42 UTC+0000
Release date
2026-07-14 06:40:41 UTC+0000
UTC Start
2025-07-14 06:30:19.422
UTC End
2025-07-14 06:32:59.422
MJD Start
60870.27105813
MJD End
60870.27290998185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002687
Ambient temperature (°C)
12.56
Seeing (arcsec)
1.31
Observation
ID
68757
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
51160
Name
W_Sgr
RA
271.25258
DEC
-29.58012
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 78.9220 78.6550 147.6000 148.3000
A0-J2 99.9230 99.1380 122.1000 122.8000
A0-C1 19.7280 19.6610 147.6130 148.2900
G1-J2 44.4170 44.0100 72.3000 72.5000
G1-C1 59.1940 58.9940 327.5970 328.2740
J2-C1 82.5500 81.8310 296.2440 296.8610
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 60870.27105813
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME gam01 Sgr
HIERARCH ESO INS SOBJ NAME W_Sgr
RA 271.25258
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 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 78.922
HIERARCH ESO ISS PBL12 END 78.655
HIERARCH ESO ISS PBLA12 START 147.6
HIERARCH ESO ISS PBLA12 END 148.3
HIERARCH ESO ISS PBL13 START 99.923
HIERARCH ESO ISS PBL13 END 99.138
HIERARCH ESO ISS PBLA13 START 122.1
HIERARCH ESO ISS PBLA13 END 122.8
HIERARCH ESO ISS PBL14 START 19.728
HIERARCH ESO ISS PBL14 END 19.661
HIERARCH ESO ISS PBLA14 START 147.613
HIERARCH ESO ISS PBLA14 END 148.29
HIERARCH ESO ISS PBL23 START 44.417
HIERARCH ESO ISS PBL23 END 44.01
HIERARCH ESO ISS PBLA23 START 72.3
HIERARCH ESO ISS PBLA23 END 72.5
HIERARCH ESO ISS PBL24 START 59.194
HIERARCH ESO ISS PBL24 END 58.994
HIERARCH ESO ISS PBLA24 START 327.597
HIERARCH ESO ISS PBLA24 END 328.274
HIERARCH ESO ISS PBL34 START 82.55
HIERARCH ESO ISS PBL34 END 81.831
HIERARCH ESO ISS PBLA34 START 296.244
HIERARCH ESO ISS PBLA34 END 296.861
HIERARCH ESO ISS AMBI TAU0 START 0.002687
HIERARCH ESO ISS AMBI TAU0 END 0.002687
HIERARCH ESO ISS AMBI TEMP 12.56
HIERARCH ESO ISS AMBI FWHM START 1.31
HIERARCH ESO ISS AMBI FWHM END 1.31