I have imaged with an RC8 + modded Canon 30D + Hutech IDAS-LP filter. The RC8 has a moderate focal length which requires good tracking. I usually did 5-10min exposures. Check my posting history to see what can be achieved under moderately light polluted skies. I think I did pretty well to capture the Horse Head Nebula. While I have since sold my RC8, I preferred imaging with this scope over my 8" Newt. The RC8 was less affected by wind, which is a problem for me in the summer months due to gully winds.
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