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A beam’s-eye tour of the optics

A beam’s-eye tour of the optics. MARVELS Interferometer Optical Layout. Interferometer. Input Lenslets. Field Lenslets. Toroidal Lenslets. Reducer. Imaging Lenslets. Slits. To spectrograph. MARVELS Interferometer Optical Layout. Interferometer. Input Lenslets. Field Lenslets.

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A beam’s-eye tour of the optics

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  1. A beam’s-eye tour of the optics

  2. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Slits To spectrograph

  3. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Input Lenslets & Field Lenslets take 60 input beams from a diverging f/4 to near-collimated. Slits To spectrograph

  4. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets ToroidalLenslets compress the beam so it will better fit through the slit. Slits To spectrograph

  5. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Interferometer introduces the fringes and produces two output beams per input. Slits To spectrograph

  6. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Length reducer ensures both beams will focus on the same slit plane. Slits To spectrograph

  7. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Imaging lenslets focus the beams to fit through the slits (hopefully with minimal overfilling losses.) Slits To spectrograph Object #1: slits 1, 3 Object #2: slits 2, 4

  8. MARVELS Interferometer Optical Layout Interferometer Input Lenslets Field Lenslets ToroidalLenslets Reducer Imaging Lenslets Spectrograph sends slit image of each wavelength of fringe onto CCD. Slits To spectrograph

  9. The final image: Sample full 4kx4k real data frame (ThAr lamp calib.) (60 objects gives 120 spectra)

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