Siemens Star Target, 4″ x 4″, 120 Sectors Photo Paper

Product Details 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. 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. Star Targets, in the 4” x 4” size, are 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. These targets have a frequency range at target center (lp/mm) of 7.14-229.2. Specifications General Note: Emulsion Coated NIST Certification: No Physical & Mechanical Properties Line Width (mm): 0.033 – 0.818 Number of Sectors: 120.00 Pattern Diameter (mm): 62.5 Dimensions (inches): 4 x 4 ±0.004 Thickness (mm): 0.20 ±nominal Optical Properties Frequency (lp/mm): 0.6112 – 15.28 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Photo Paper Optical Density OD (Average): >1.6 Wedge Angle (°): 3° Unresolved Core Diameter (mm): 2.5 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×