SDSS SPECTROGRAPHS

• Introduction
• Interfaces; Who is responsible for What
• Documentation
• DXF drawings of the spectrographs*

*also available via anonymous ftp to ftp.apo.nmsu.edu. If connecting via WWW, save files as documents; dxf files make dull reading!

Introduction

There are two identical spectrographs, both permanently mounted to the back of the 2.5m telescope. Using a red and blue camera, the spectral range is 3900-9100 Angstroms with a resolution of 2000. Each camera (four in all) uses a thinned Tektronix 2048x2048 CCD with square 24 micron pixels. Each spectrograph is fed with 320 optical fibers, which are all-silica UV-enhanced with 180 micron diameter cores.