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Add Vixen or Losmandy plates above the rings to enhance overall mechanical system rigidity
selecting only the sharpest images taken during brief moments of steady atmospheric seeing
and professional-grade connection for demanding astrophotography setups
optical accessories
Askar FRA500 90mm f/5.6 Quintuplet Flat-Field APO Astrograph svbony sv535 Add Vixen or Losmandy platesAskar FRA500 f 5. 6 Quintuplet Astrograph APO Refractor Telescope The Askar FRA500 belongs to the renowned FRA (Flat field Refractive Astrograph) series. With a quintuplet, Petzval like design including two ED elements, it delivers a naturally flat field and excellent chromatic correction for full frame astrophotography and refined visual observing. Highlights 5 element Petzval style optical system (3+2) with two ED lenses for tight, colour pure stars
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