Mathematics
Telescope
89%
Surveillance
77%
Alignment
69%
Mirror
66%
Performance
35%
Aberration
30%
Wavefront Sensor
16%
Depth of Focus
15%
Defocus
14%
Charge-coupled Device
13%
Astigmatism
12%
Field of View
12%
Optical Properties
11%
Ray Tracing
10%
System Performance
9%
Camera
9%
Design
9%
Substrate
8%
Iterative Process
8%
Degree of freedom
6%
Prediction
5%
Curvature
5%
Motion
5%
Higher Order
5%
Physics & Astronomy
space surveillance
100%
alignment
46%
telescopes
45%
mirrors
42%
performance
26%
aberration
20%
Schmidt telescopes
11%
lessons learned
10%
astigmatism
9%
coma
9%
ray tracing
7%
field of view
6%
charge coupled devices
6%
degrees of freedom
6%
cameras
5%
curvature
5%
Engineering & Materials Science
Space surveillance
93%
Telescopes
70%
Mirrors
45%
Aberrations
29%
Wavefronts
9%
Optical properties
9%
CCD cameras
8%
Ray tracing
8%
Substrates
5%
Chemical Compounds
Optical Property
43%
Surface
19%