PMAS: The Potsdam Multi‐Aperture Spectrophotometer. I. Design, Manufacture, and Performance

• Published in: Publications of the Astronomical Society of the Pacific 2005-06, Vol.117 (832), p.620-642
• Main Authors: Roth, Martin M., Kelz, Andreas, Fechner, Thomas, Hahn, Thomas, Bauer, Svend‐Marian, Becker, Thomas, Böhm, Petra, Christensen, Lise, Dionies, Frank, Paschke, Jens, Popow, Emil, Wolter, Dieter, Schmoll, Jürgen, Laux, Uwe, Altmann, Werner
• Format: Article
• Language: English
• Subjects: Calibration; Cameras; Collimation; Computer software; Optical focus; Optical lenses; Photographic lenses; Pixels; Telescopes; Wavelengths
• ISSN: 0004-6280; 1538-3873
• DOI: 10.1086/429877

We describe the design, manufacture, commissioning, and performance of PMAS, the Potsdam Multi‐Aperture Spectrophotometer. PMAS is a dedicated integral field spectrophotometer optimized to cover the optical wavelength regime of 0.35–1 μm. It is based on the lens array–fiber bundle principle of operation. The instrument employs an all‐refractive fiber spectrograph, built with CaF2optics, to provide good transmission and high image quality over the entire nominal wavelength range. A set of user‐selectable reflective gratings provides low to medium spectral resolution of approximately 1.5, 3.2, and 7 Å in first order, depending on the groove density (1200, 600, 300 grooves mm−1). While the standard integral field unit (IFU) uses a \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $16\times 16$ \end{document} element lens array, which provides seeing‐limited sampling in a relatively small field of view (FOV) in one of three magnifications (8 \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $\arcsec$\end{document} × 8 \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6}