STATEMENT OF WORK.pdf

Statement of Work for CODEX Star Tracker

National Aeronautics and Space Administration

Wallops Flight Facility Wallops Island, VA

INTRODUCTION

The Wallops Flight Facility, Small Satellite and Special Projects Office, Code 850 is developing a pointed coronagraph science payload for the international space station. The

Star Tracker is required for the Coronal Diagnostic Experiment (CODEX). CODEX will operate from a platform on the ISS. This science instrument will help to understand solar wind sources and acceleration mechanisms to resolve overarching solar physics questions.

SCOPE

NASA seeks to purchase a single star tracker for the CODEX project. The star tracker shall meet the specifications in the Requirement section.

SCHEDULE

Deliverable specified in shall be onsite at the Wallops Flight Facility no later than 90 calendar days from the vender’s notice to proceed.

REQUIREMENTS

ꞏ Output attitude quaternions at least 5 times a second

ꞏ RS‐422 asynchronous comm link

ꞏ 28VDC input power and use less than 10W power draw

ꞏ A baffle shall be included with a sun keep out angle should be less than 20deg half angle

ꞏ The baffle shall also have an earth keep out angle should be less than 20deg half angle

ꞏ Mass < 2kg (with baffle)

ꞏ Boresight Alignment: Attitude knowledge shall be < 10 arcseconds cross boresight and < 50 arcseconds about the boresight (all values 1‐sigma)

ꞏ Material shall meet the low outgassing material criteria established in ASTM E595

DELIVERABLES

(1) Star Tracker