Mars on Feb 20 & 21 2010 using Newtonian 8" f/8 with eyepiece projection giving approximately f/43 with an effective fl of approximately 350". Camera ST-402; LRGB with series of L at .04 seconds & RGB at .08 seconds, images stacked and processed using Registax and AIP4Win; resampled 2x.

NASA Hubble Space Telescope image for comparision