what is the furthest you have seen through a telescope

Question: what is the furthest you have seen through a telescope
- Keywords:
  equipment,
  space,
  superlative,
  universe
Asked by Henry to David on 18 Nov 2014.
- David Wilson answered on 18 Nov 2014:
  
  In February I saw a supernova in another galaxy, over 11 million light-years from Earth. That’s probably the furthest!

Question: what is the furthest you have seen through a telescope