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Siemens Star Target, 4" x 4", 60 Sectors Chrome on Glass

Siemens Star Target, 4" x 4", 60 Sectors Chrome on Glass

Stock #46-247
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Frequency (lp/mm):
0.31 - 7.14
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Float Glass
Line Width (mm):
1.6 - 0.070
Number of Sectors:
Optical Density OD (Average):
Pattern Diameter (mm):
Dimensions (inches):
4 x 4 ±0.004
Thickness (mm):
1.50 ±0.100
Wedge Angle:
Unresolved Core Diameter (mm):
Sputtered Chrome Coated
NIST Certification:

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 233:

Product Family Description

  • Ideal for Detection of Focus Errors and Astigmatism
  • Frequency Range at Target Center (lp/mm) 7.14 - 229.2
  • Available on White Photographic Paper or Chrome on Glass

Star targets are ideal for identifying focus errors, astigmatism, and other aberrations existing in an imaging system. We have several targets to choose from. Our 60mm diameter (#58-832 and #58-833) targets feature an unresolved core of 100μm, and are ideal for high-resolution or high magnification imaging systems. Both targets are chrome on glass. Our 4” x 4” targets, available as chrome on glass (#46-247) or photo paper (#46-246), feature an unresolved core of 2.7mm, and are designed for mid- to low-range spatial frequencies common in macro imaging systems.