It didn't take long before someone modified their 450D to remove the IR filter. I give mad props to Gary Honis for using his skills to share this with everyone on the internet. Here is his website giving step by step instructions to perform it (if you're brave enough). It also has some premodified ISO testing comparing the 300D to the 450D for astrophotography. Enjoy! 
http://ghonis2.ho8.com/rebelmod450d1.html![]()

