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Optical Design ED Triplet Refractor
Lens Coatings Fully Multi-Coated Glass Type BK7 (2)/FPL-53(ED) Primary Aperture (mm) 100 F/Ratio 5.5 Focal Length (mm) 550 Observational Info Dawes Limit 1.16 Rayleigh Limit 1.4 Limiting Mag. 12.5 Minimum Magnification 14 Maximum Magnification 197 Light Gathering (compared to next size down) 56% General Info Focuser 3.4" Dual Speed R&P OTA Length (Retract/Ext.) 18.3"/24.5" OTA Outer Diameter 5.75" OTA Weight (with accessories) 16 Accessories Included Finder 8x50 RACI Included Diagonal 2" Dielectric Mounting Accessories Rings/D-Rail Included Eyepieces None Included Case Yes Corrector Yes |