R66 Star Test Target 5º

Also known as Siemens or Sunburst Pattern. It is used qualitatively to demonstrate focusing effects, optical astigmatism and for rapid assessment of focal plane.

 

Glass Type and Thickness
B270 1.5mm thick

Dimensions
50mm x 50mm

Method
Vacuum Deposited Chrome on Glass

Image Diameter
25mm

Unresolved Centre Core
0.4mm