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Hello, Arp
I have a DMK21AF04 (mono) and a DBK21AF04 (colour), both Firewire and there appears to be a big difference in “sensitivity” between the two units that you may want to consider in your purchasing decision.
When I was recently imaging the Trapezium stars in M42 with the mono DMK I was able to capture at up to 60fps with the gain (0-1024) set at around 500, whereas when I switched to the colour DBK, I had to drop the settings to 15fps with a gain of around 950 and the images were noisier. Unfortunately, I did not try the DBK with a mono codec to see what affect that would have on the image.
At the time, I was using a Tak Mewlon 180 F12 with a Televue x2.5 Powermate which is obviously not a typical auto guiding set up, so if you are planning to auto guide with a typical 80mm F7 refractor this may not be an issue.
Cheers
Dennis
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