#Askar FRA500 is an APO #refractor #telescope from SharpStar (FRA stands for Flat-field Refractive Astrograph). Aksar manufactures upper-middle class of refractors with nice lenses. This model is built with a Petzval scheme and is a quintuplet (3 lenses apochromatic telescope and a built in 2 lens flattener) giving a picture of high quality across the whole field that is a 55 mm circle, ready for the full-frame cameras.
The official page of this Askar FRA500 telescope is:
www.askarlens.c...
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Негізгі бет Askar FRA500 in a case - a Petzval astrograph: apochromatic refractor telescope unboxing and showing
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