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Source at z=4.78, near ngc5907

500 min on 500mm RC at F/d=8, ST10 XME. The blob indicated by the green cicrle is so far the furthest identified/measured source I have ever imaged. The redshift (z) is evaluated to 4.78, which translates to an emission when the universe was a bit less than 10% of his current age. The visual magnitude is beyond 25.

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Uploaded on June 29, 2017