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For DSO using the Skywatcher (native f ratio f/7.5?? and with canon 300D, FOV = 86.7 x 130.1 arcmin and pixel resolution of 2.54 arcsec/pixel (pretty ideal actually)) using a meade/celestron 6.3 FR will reduce your f ration to f4.7 and increase your FOV to 137.7 x 206.5 arcmin with a pixel resolution of 4.03 arcsec/pixel (oversampling but not a real problem, better to oversample than undersample which would happen with the powermate with DSOs)
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