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That's my understanding, John.
The mono DMK is only US$490, so you could do imaging of the moon at full resolution, and get coloured filters later..
Or, get a cheaper filterwheel + filters for $200-$500. I don't know that it's absolutely necessary to get the astronomiks branded colour filters at $200 or more each. I guess you'd need to do some experiments to determine if there's any reduction in quality by using "lesser branded" colour filters.
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