Exposure
ID
GRAVI.2025-05-22T06:07:11.047_1
Header ID
GRAVI.2025-05-22T06:07:11.047
Date updated
2025-05-22 06:16:07 UTC+0000
Release date
2026-05-22 06:16:07 UTC+0000
UTC Start
2025-05-22 06:07:11.047
UTC End
2025-05-22 06:09:51.047
MJD Start
60817.25498897
MJD End
60817.25684082186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.009227
Ambient temperature (°C)
14.59
Seeing (arcsec)
0.375
Observation
ID
67519
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
50218
Name
X_Sgr
RA
266.890065
DEC
-27.83085
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 68.0670 68.1340 268.9000 269.2000
K0-D0 95.7730 95.8340 248.3000 248.7000
K0-J3 56.3230 56.3510 330.4930 330.7750
G2-D0 39.9870 39.9870 211.6000 211.9000
G2-J3 64.5000 64.5050 38.6820 39.0210
D0-J3 104.2970 104.3020 35.9620 36.3120
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 60817.25498897
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V X Sgr
HIERARCH ESO INS SOBJ NAME X_Sgr
RA 266.890065
DEC -27.83085
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 68.067
HIERARCH ESO ISS PBL12 END 68.134
HIERARCH ESO ISS PBLA12 START 268.9
HIERARCH ESO ISS PBLA12 END 269.2
HIERARCH ESO ISS PBL13 START 95.773
HIERARCH ESO ISS PBL13 END 95.834
HIERARCH ESO ISS PBLA13 START 248.3
HIERARCH ESO ISS PBLA13 END 248.7
HIERARCH ESO ISS PBL14 START 56.323
HIERARCH ESO ISS PBL14 END 56.351
HIERARCH ESO ISS PBLA14 START 330.493
HIERARCH ESO ISS PBLA14 END 330.775
HIERARCH ESO ISS PBL23 START 39.987
HIERARCH ESO ISS PBL23 END 39.987
HIERARCH ESO ISS PBLA23 START 211.6
HIERARCH ESO ISS PBLA23 END 211.9
HIERARCH ESO ISS PBL24 START 64.5
HIERARCH ESO ISS PBL24 END 64.505
HIERARCH ESO ISS PBLA24 START 38.682
HIERARCH ESO ISS PBLA24 END 39.021
HIERARCH ESO ISS PBL34 START 104.297
HIERARCH ESO ISS PBL34 END 104.302
HIERARCH ESO ISS PBLA34 START 35.962
HIERARCH ESO ISS PBLA34 END 36.312
HIERARCH ESO ISS AMBI TAU0 START 0.009227
HIERARCH ESO ISS AMBI TAU0 END 0.009227
HIERARCH ESO ISS AMBI TEMP 14.59
HIERARCH ESO ISS AMBI FWHM START 0.4
HIERARCH ESO ISS AMBI FWHM END 0.35