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Hi David ,
I asked myself the same question a few months ago and I have a stock Canon 600D too.
I read Roger Clark’s article ( clarkvision.com section 4e ) on whether to modify an astrophotography camera. At this point I’m leaving my 600D the way is it as I’m happy with the images ( see attached image of my Eta Carina nebula unprocessed straight off the camera - single image 60 sec exposure @ ISO 1600 unguided ) I have a 6” f6 newt on a HEQ5 mount.
I guess it’s personal choice but it all depends on many factors - telescope parameters, mount, PA, exposure / guiding, seeing conditions , camera settings etc..
At some point down the track I may mod my camera but for now I’m happy with it
Roger Clark’s article is a good read ( a lot of DSLR astrophotographers may disagree with him )
Martin
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