SPHERE Spectro-Polarimetric High-contrast Exoplanet REsearch

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Presentation transcript:

SPHERE Spectro-Polarimetric High-contrast Exoplanet REsearch Has three arms: IRDIS: Infra-Red Dual-beam Imager and Spectrograph Dual beam imaging Dual beam polarimetric imaging Classical imaging Long slit spectroscopy IFS (with 2 prisms: YJ (R=50) and YJH (R=30) ) ZIMPOL: Zurich Imager and Polarimeter (4 modes: P1,2,3 and imaging) Spectro-Polarimetric High-contrast Exoplanet REsearch Wolfgang Hummel, 29.1.2014, QC meeting

Wolfgang Hummel, 29.1.2014, QC meeting

Wolfgang Hummel, 29.1.2014, QC meeting

Wolfgang Hummel, 29.1.2014, QC meeting

IRDIS Dual Beam imaging (2k x 1k), 2 FS (NB filter on target, BB filter on SKY), products with 2 x 4 extensions (master, BPM, RMS, confidence map), readmode= double, NDIT raw frames, cube mode, MINDIT=0.84 sec Classical imaging 11'' x 12.5'' FOV Dual Beam polarimetric imaging: 4 x 4 extensions LSS R(LRS)=50, R(MRS)=400 Wolfgang Hummel, 29.1.2014, QC meeting

IRDIS-LSS Wolfgang Hummel, 29.1.2014, QC meeting

IRDIS (data) Raw frame 8Mb Products with 4 extensions: -32 bit (float) main image (2k x 1k) 8 bit (short) bad or flagged pixel -32 bit (float) weightmap (numer of pixel) -32 bit (float) RMS error Double beam imaging: 8 extensions NDIT resolved, cube mode, Double Wolfgang Hummel, 29.1.2014, QC meeting

IFS Wolfgang Hummel, 29.1.2014, QC meeting

IFS (data) Raw frame 2k x 2k 16Mb Product with 4 extension (as IRDIS) FOV 1.73'' x 1.73'', 12.25 mas/pixel, hexagonal lenselet resulting in many short low res spectra Wavelength calibration via 4 lasers (0.98, 1.12, 1.31 and 1.54 mu) Wolfgang Hummel, 29.1.2014, QC meeting

ZIMPOL Wolfgang Hummel, 29.1.2014, QC meeting

ZIMPOL (data) Raw data = 2 extensions, 1k x 1k x NDIT cube Products = 16 extensions 1k x 1k 4 modes: imaging and P1, P2, P3 (rotation modes) P1: no field derot. (short exposures) P2: active field derot. (field is fixed, polarisation can drift, long exposures) P3: pseudo field derot. (combination of P1 and P2). Wolfgang Hummel, 29.1.2014, QC meeting