The Ha and OIII produce quite nice results with my modded 40D - the SII is a work in progress...long, high iso exposures required to bring out any detail as expected. I tried a quick 'Hubble Palette' test on Eta recently...
http://www.iceinspace.com.au/forum/s...ght=eta+hubble
...and the SII on its own...
http://www.iceinspace.com.au/forum/a...se.php?a=79138
Doug