Specifications:
Primary mirror diameter - 400 mm Primary focal ratio - F/3 Secondary mirror diameter - 145 mm Equivalent focal ratio - F/8 Equivalent focal length - 3200 mm Back Focus (from primary mirror surface) - 325 mm Primary to Secondary Spacing - 784 mm Primary mirror hole - 120 mm Primary mirror thickness - 55 mm Secondary mirror thickness -20 mm Mirrors material - LK-7 (low expansion optical glass) AstroSitall optical sets are available on special order.
Optical accuracy - 1/4 wave peak-to-valley of wave front in assembled system or better and 1/25 wave RMS or better, Strehl Ratio is 0.95 or is higher.The interferometric test report is supplied with each optical set.
Coating of surfaces - Al + SiO2 (Quartz) overcoat
ALTERNATIVE PRODUCTS
