@apalu @thomasfuchs yeah, I was kind of thinking about sdss r and g, which are both kind of broad. Part of my motivation for taking photos myself is actually that the sources are bright enough that the sdss images look awful and are a bit saturated and I'm pretty sure I could do pretty well with a cheapish telescope and my camera.
But I also really like a couple of the hst filters for no rational reason so they could be fun to play around with