Requirements and Specifications

Configuration Change Control

• Change Control Process
• Change Control Board

Controlled Documents

The following documents define the high level requirements and specifications for the SDSS.  All changes must be approved by the SDSS Change Control Board.  Requests or suggestions for changes must be made following the SDSS change control process defined above.

Science

This document defines the requirements for image quality, photometric and astrometric calibrations, target selection, spectroscopy, and operations. Contained in the document is also a summary list of specifications of the telescope and instrument that affect the science requirements. This document is maintained by Michael Strauss.
Revision Log (collaborators only)

Telescope

This document defines the performance requirements for the telescope mechanical systems.  This includes the motion control system, interlocks. Placeholders are included for requirements on optics and instruments, including the fiber systems.  There is also a section on telescope and enclosure parameters relevant to telescope performance issues.  This document is maintained by Bill Boroski.
Revision Log (collaborators only)

Software

This document defines the requirements for performance and deliverables from the software.  Top-level science requirements are also here but for the most part are superseded by the Science Requirements document above.  This document is maintained by Steve Kent.
Revision Log (collaborators only)

Data Flow

This document defines the flow of data through survey operations, from the point of acquiring data from the sky to the point where data is made available to the SDSS Collaboration and the astronomy community.  This document is maintained by Bill Boroski.

Non-controlled Documents

The following documents contain relevant information but have not yet been formally approved and placed under change control.  They are included for reference.

Observing Systems and Operations at APO

• 0.5m Photometric Telescope
• 2.5m Telescope Technical Requirements and Performance Specifications (collaborators only)
• 2.5m Telescope
• PT Camera
• Imaging Camera Specifications (Collaborators only)
• Spectrograph Specifications (Collaborators only)
• Fiber Cartridge System Specifications (Collaborators only)
• PT DAQ
• 2.5m DAQ - IOP (Collaborators only)
• 2.5m DAQ - SOP (Collaborators only)
• A Specification for PLC Implementation of Instrument-Change Interlocks
• System Documentation Requirements

Data Processing Operations at FNAL

• PT Pipeline (collaborators only)
• SSC Pipeline (collaborators only)
• Astrometric Pipeline (collaborators only)
• Postage Stamp Pipeline
• Frames Pipeline (collaborators only)
• Spectroscopic Pipeline (collaborators only)
• Final Photometric Calibration
• Photometric Calibration Accuracy
• Object Catalogs (Photometric Pipeline Outputs)
• Redshifts 1-D Spectra (collaborators only)
• 2-D Spectra (collaborators only)
• Atlas Images
• Pixel Map (Photometric Pipeline Outputs)
• Operational Database
• Target Selection (collaborators only)
• Imaging Plan
• Drilling Coordinates
• Plate Drilling

Data Distribution System

• Science Archive