Quote:
Originally Posted by marki
The star instrument mirrors are @ 1/24 wave aren't they??? Still I guess I could suffer a 460mm hyperbolic mirror with measley 1/20 wave optics at chinese prices....
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Star Instruments quote 1/20 RMS 1/4 wavefront on their website. This is ample quality for an instrument with large central obstruction that is designed for deep sky imaging at prime focus not high magnification planetary work.