1 / 12

SPHERE

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).

evonne
Download Presentation

SPHERE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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) SPHERE Spectro-Polarimetric High-contrast Exoplanet REsearch Wolfgang Hummel, 29.1.2014, QC meeting

  2. Wolfgang Hummel, 29.1.2014, QC meeting

  3. Wolfgang Hummel, 29.1.2014, QC meeting

  4. Wolfgang Hummel, 29.1.2014, QC meeting

  5. 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

  6. IRDIS-LSS Wolfgang Hummel, 29.1.2014, QC meeting

  7. 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

  8. IFS Wolfgang Hummel, 29.1.2014, QC meeting

  9. 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

  10. ZIMPOL Wolfgang Hummel, 29.1.2014, QC meeting

  11. 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

More Related