the top link is for the LX55. the bottom link is for astrophotography in general with a link to mount modifications and supercharging.
I've only used an LX75 once and not for astrophotography, so I can't comment on the 55's suitablilty. Just a firm believer in more knowledge, less regrets
Mind you after using that 75 and having the Losmandy to compare with right next to it I know which one I'm glad I got
