QSI660-WSG Mono CCD has Sony ICX694 6.1m sensor with 4.54um pixels, very hi QE and will sit at -20 all year round so noise is simply not an issue. Couple this to an 8 position wheel with Astrodon LRGB, 3nm HA OII SII NII filters and You have a killer combination.
For your convenience and ease of use we have taken the time to calculate this setup for filter weightings which if followed will help you to maximise your imaging time. For more information on this visit our FAQ's page