Askar SQA106 Petzval Astrograph

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Specifications Parameters Aperture size 106mm Focal length 509mm Focal ratio f/4.8 Objective lens Quintuplet petzval APO（including two pieces of SD glass） Total length 516mm(when t he dew shield is contracted)586mm(when the dew shield is stretched) Format specifications full frame（44mm），upgrade to the medium format(55mm) OTA weight 5.82kg Gross weight（including tube ring and dovetail plate） 8.12kg Rear-end thread type M48/M54/M68 adapters Rear-end connection distance Support 48-78mm range (Recommended connection length is 55mm) Standard package items a SQA106 OTA, an Oxford cloth case Show more