Askar FRA500 90mm f/5.6 Quintuplet APO Refractor Pre-Owned Like New

Askar FRA500 90mm f/5.6 Quintuplet APO Refractor OTA Pre-Owned Like New Overview Experience premium wide-field astrophotography with the Askar FRA500 90mm f/5.6 Quintuplet APO Refractor. This pre-owned telescope is in like-new condition.. Featuring a sophisticated five-element Petzval optical design, the FRA500 delivers a naturally flat field without requiring an external field flattener, making it an excellent choice for both dedicated astro-imagers and visual observers. Whether you're capturing expansive nebulae, galaxies, or star fields, the FRA500 provides exceptional color correction, sharp stars across the frame, and outstanding optical performance. Condition Condition: Pre-Owned – Like New Optics are clean and free from scratches, haze, fungus, or coating defects. Exterior shows little to no cosmetic wear. Focuser operates smoothly and precisely. Fully tested and ready for use. Key Features 90mm apochromatic quintuplet refractor 500mm focal length Fast f/5.6 focal ratio Built-in flat-field Petzval optical design Large image circle suitable for full-frame cameras Precision dual-speed rack-and-pinion focuser Excellent color correction with pinpoint stars across the field Ideal for astrophotography and wide-field visual observing Specifications Aperture: 90mm Focal Length: 500mm Focal Ratio: f/5.6 Optical Design: Quintuplet APO Petzval Image Circle: Up to 55mm Tube Material: CNC-machined aluminum Dual-speed precision focuser Compatible with DSLR, mirrorless, CMOS, and CCD imaging systems Included Askar FRA500 90mm f/5.6 Optical Tube Assembly (OTA) CNC Tube Rings Carry Handle Losmandy-Style Dovetail Plate Original Aluminum Hard Carrying Case Original Accessories (as shown)