As Mirko said, you want ~2mm exit pupil for doing galaxy viewing, this equates to about 13mm eye piece. What comes to mind for that is a TeleVue Nagler VI 13mm
http://www.bintel.com.au/Eyepieces-a...oductview.aspx
From there you can either get a 2.5x barlow:
http://www.bintel.com.au/Eyepieces-a...oductview.aspx
Or go down the path of getting a good quality 5mm plossl or ortho, you don't need to worry about FOV doing planetary, just need a good quality tunnel vision bit of glass
