What is the furthest object from the earth that you have seen visually? For me it is the quasar 3C273, in Virgo, at a distance of about 2.4 billion light years. At magnitude 12.9 it is fairly easy to spot from a dark site.
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M31 is 2.5 million light years away and can be seen naked eye at a goo dark sky site with ease .
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I hope to image 3C273 that will be the furthest object I’ll watch using an amateur telescope.
Now, my furthest object I observed is a supernova in a galaxy next to M60 a couple years ago.
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