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CNC machined aluminium for a superior fit and finish
the GEM28 is designed with portability in mind
25" size focuser - compatible with almost all standard accessories
Ideal for both visual observation and astrophotography
Baader Semi Apo Filter 1.25" CNC machined aluminium for aDescription A filter that removes the need to combine the Neodymium Moon and Skyglow filter with the Fringe Killers to deliver an amazing colour corrected image to achromatic refractors. The Baader Semi Apo does it all in one filter. Baader Semi Apo Filter against violet fringes of refractors 1. 25" cell By selectively filtering out of those parts of the spectrum where the false colour of achromatic refractors is significant, this disturbing effect is
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