Star-tracker systems
Determining sources for celestial references used by orbiting astronomical observatories
Seifert, L. I.↗
Engineering topics
Seifert, L. I.
Publications and source records attributed to Seifert, L. I..
Image position sensor
Preliminary design calculations for a proposed fine guidance experiment telescope containing a four-sided pyramidal reflector indicate that 0.01 arc sec pointing, at 0.003 arc sec sensing resolution, could be achieved by viewing a +10.0 magnitude star where the total collected light energy would be applied for fine error detection.
Rosett, B.↗