Askar FRA600 Quintuplet Astrograph Unboxing and Demonstration

Askar FRA600 Quintuplet Astrograph is a specialized instrument for both astrophotography and visual observation. The front-triplet and rear-doublet make an excellent five-elememt astrograph which has an dramatic apochromatic performance. The special conical extender (included) has three adapters serving different attachment needs like astronomy cameras or DSLR cameras with M48×0.75 or M54×0.75 threads as well as standard 2'' filters.
For more details: http://www.askarlens.com/index.php/class7/208.html

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Видео Askar FRA600 Quintuplet Astrograph Unboxing and Demonstration канала Sharpstar Optics