Flight System:<br><p>The flight system is composed of three main elements: 
</p>
<ol><li><b>Sealed Container:</b> houses all of the commercial-of-the-shelf (COTS) avionics boards, the laser, and custom power board pressured at 1 atmosphere with air. Connected to optical gimbal transceiver via cable feedthroughs.</li>
<li><b>Optical gimbal transceiver:</b> an optical head that contains an uplink camera and laser collimator for the downlink sits on a two-axis gimbal.</li>
<li><b>Flight Releasable Attachment Mechanism (FRAM):</b> both the sealed container and Optical gimbal transceiver sit on the FRAM, which provides a standard mechanical and electrical interface to both the ISS and the launch vehicle.</li></ol>
NASA/Jet Propulsion Laboratory
<bdo lang="en" dir="ltr" title="archived on 24 December 2016 at the Wayback Machine"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20161224161054/http://phaeton.jpl.nasa.gov/external/projects/optical.cfm">Optical PAyload for Lasercomm Science (OPALS)</a></bdo>