here's an image I did recently of a favourite visual star cluster NGC 3532.
It's 4 x 1 minute exposures @ ISO-800 with the modified Canon 300D on the 12-inch f/5 GSO telescope and Baader Coma Corrector. Image is handguided with 4.5" guidescope. Images are dark-subtracted, flat fielded, offset adjusted with IRIS.
Higher Res. Image