PMAS/PPAK

PMAS

• The potsdam multi-aperture spectrophotometer
• PMAS is a unique spectrophotometer, covering a wide wavelength range from 350 nm to 900 nm, its standard IFU, a

fiber-coupled lens-array, provides 256 spectra and is limit ed to a maximum integral field-of-view of 16×16 arcseconds on the sky.

PPAK

• opts for rather large fibers, that can not properly sample the (seeing-limited) image, but collect more flux and allow for wide fields. * The PPak system consists of a fiber bundle with 331 object, 36 sky and 15 calibration fibers. The object and

sky fibers collect the light from the focal plane behind a focal reducer lens. The object fibers of PPak, each 2.7 arc- seconds in diameter, provide a contiguous hexagonal field-of-view of 74×64 arcseconds on the sky, with a filling factor of 60%. The operational wavelength range is from 400 to 900 nm. T